static void snapshot_sig_handler(int sig);
static void alarm_sig_handler(int sig);
-int __weak
-perf_event__synth_time_conv(const struct perf_event_mmap_page *pc __maybe_unused,
- struct perf_tool *tool __maybe_unused,
- perf_event__handler_t process __maybe_unused,
- struct machine *machine __maybe_unused)
-{
- return 0;
-}
-
static const struct perf_event_mmap_page *
perf_evlist__pick_pc(struct evlist *evlist)
{
perf-y += record.o
perf-y += srcline.o
perf-y += srccode.o
+perf-y += synthetic-events.o
perf-y += data.o
perf-y += tsc.o
perf-y += cloexec.o
#include "thread.h"
#include "thread-stack.h"
#include <tools/libc_compat.h>
+#include "util/synthetic-events.h"
#define MAX_TIMESTAMP (~0ULL)
-#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <inttypes.h>
#include <sys/stat.h>
#include <unistd.h>
#include <uapi/linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */
-#include <api/fs/fs.h>
#include <linux/perf_event.h>
#include <linux/zalloc.h>
#include "cpumap.h"
#include "time-utils.h"
#include <linux/ctype.h>
#include "map.h"
+#include "util/namespaces.h"
#include "symbol.h"
#include "symbol/kallsyms.h"
#include "asm/bug.h"
#include "stat.h"
#include "session.h"
#include "bpf-event.h"
-#include "synthetic-events.h"
#include "tool.h"
#include "../perf.h"
-#define DEFAULT_PROC_MAP_PARSE_TIMEOUT 500
-
static const char *perf_event__names[] = {
[0] = "TOTAL",
[PERF_RECORD_MMAP] = "MMAP",
[PERF_RECORD_COMPRESSED] = "COMPRESSED",
};
-static const char *perf_ns__names[] = {
- [NET_NS_INDEX] = "net",
- [UTS_NS_INDEX] = "uts",
- [IPC_NS_INDEX] = "ipc",
- [PID_NS_INDEX] = "pid",
- [USER_NS_INDEX] = "user",
- [MNT_NS_INDEX] = "mnt",
- [CGROUP_NS_INDEX] = "cgroup",
-};
-
-unsigned int proc_map_timeout = DEFAULT_PROC_MAP_PARSE_TIMEOUT;
-
const char *perf_event__name(unsigned int id)
{
if (id >= ARRAY_SIZE(perf_event__names))
return perf_event__names[id];
}
-static const char *perf_ns__name(unsigned int id)
-{
- if (id >= ARRAY_SIZE(perf_ns__names))
- return "UNKNOWN";
- return perf_ns__names[id];
-}
-
-int perf_tool__process_synth_event(struct perf_tool *tool,
- union perf_event *event,
- struct machine *machine,
- perf_event__handler_t process)
-{
- struct perf_sample synth_sample = {
- .pid = -1,
- .tid = -1,
- .time = -1,
- .stream_id = -1,
- .cpu = -1,
- .period = 1,
- .cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK,
- };
-
- return process(tool, event, &synth_sample, machine);
-};
-
-/*
- * Assumes that the first 4095 bytes of /proc/pid/stat contains
- * the comm, tgid and ppid.
- */
-static int perf_event__get_comm_ids(pid_t pid, char *comm, size_t len,
- pid_t *tgid, pid_t *ppid)
-{
- char filename[PATH_MAX];
- char bf[4096];
- int fd;
- size_t size = 0;
- ssize_t n;
- char *name, *tgids, *ppids;
-
- *tgid = -1;
- *ppid = -1;
-
- snprintf(filename, sizeof(filename), "/proc/%d/status", pid);
-
- fd = open(filename, O_RDONLY);
- if (fd < 0) {
- pr_debug("couldn't open %s\n", filename);
- return -1;
- }
-
- n = read(fd, bf, sizeof(bf) - 1);
- close(fd);
- if (n <= 0) {
- pr_warning("Couldn't get COMM, tigd and ppid for pid %d\n",
- pid);
- return -1;
- }
- bf[n] = '\0';
-
- name = strstr(bf, "Name:");
- tgids = strstr(bf, "Tgid:");
- ppids = strstr(bf, "PPid:");
-
- if (name) {
- char *nl;
-
- name = skip_spaces(name + 5); /* strlen("Name:") */
- nl = strchr(name, '\n');
- if (nl)
- *nl = '\0';
-
- size = strlen(name);
- if (size >= len)
- size = len - 1;
- memcpy(comm, name, size);
- comm[size] = '\0';
- } else {
- pr_debug("Name: string not found for pid %d\n", pid);
- }
-
- if (tgids) {
- tgids += 5; /* strlen("Tgid:") */
- *tgid = atoi(tgids);
- } else {
- pr_debug("Tgid: string not found for pid %d\n", pid);
- }
-
- if (ppids) {
- ppids += 5; /* strlen("PPid:") */
- *ppid = atoi(ppids);
- } else {
- pr_debug("PPid: string not found for pid %d\n", pid);
- }
-
- return 0;
-}
-
-static int perf_event__prepare_comm(union perf_event *event, pid_t pid,
- struct machine *machine,
- pid_t *tgid, pid_t *ppid)
-{
- size_t size;
-
- *ppid = -1;
-
- memset(&event->comm, 0, sizeof(event->comm));
-
- if (machine__is_host(machine)) {
- if (perf_event__get_comm_ids(pid, event->comm.comm,
- sizeof(event->comm.comm),
- tgid, ppid) != 0) {
- return -1;
- }
- } else {
- *tgid = machine->pid;
- }
-
- if (*tgid < 0)
- return -1;
-
- event->comm.pid = *tgid;
- event->comm.header.type = PERF_RECORD_COMM;
-
- size = strlen(event->comm.comm) + 1;
- size = PERF_ALIGN(size, sizeof(u64));
- memset(event->comm.comm + size, 0, machine->id_hdr_size);
- event->comm.header.size = (sizeof(event->comm) -
- (sizeof(event->comm.comm) - size) +
- machine->id_hdr_size);
- event->comm.tid = pid;
-
- return 0;
-}
-
-pid_t perf_event__synthesize_comm(struct perf_tool *tool,
- union perf_event *event, pid_t pid,
- perf_event__handler_t process,
- struct machine *machine)
-{
- pid_t tgid, ppid;
-
- if (perf_event__prepare_comm(event, pid, machine, &tgid, &ppid) != 0)
- return -1;
-
- if (perf_tool__process_synth_event(tool, event, machine, process) != 0)
- return -1;
-
- return tgid;
-}
-
-static void perf_event__get_ns_link_info(pid_t pid, const char *ns,
- struct perf_ns_link_info *ns_link_info)
-{
- struct stat64 st;
- char proc_ns[128];
-
- sprintf(proc_ns, "/proc/%u/ns/%s", pid, ns);
- if (stat64(proc_ns, &st) == 0) {
- ns_link_info->dev = st.st_dev;
- ns_link_info->ino = st.st_ino;
- }
-}
-
-int perf_event__synthesize_namespaces(struct perf_tool *tool,
- union perf_event *event,
- pid_t pid, pid_t tgid,
- perf_event__handler_t process,
- struct machine *machine)
-{
- u32 idx;
- struct perf_ns_link_info *ns_link_info;
-
- if (!tool || !tool->namespace_events)
- return 0;
-
- memset(&event->namespaces, 0, (sizeof(event->namespaces) +
- (NR_NAMESPACES * sizeof(struct perf_ns_link_info)) +
- machine->id_hdr_size));
-
- event->namespaces.pid = tgid;
- event->namespaces.tid = pid;
-
- event->namespaces.nr_namespaces = NR_NAMESPACES;
-
- ns_link_info = event->namespaces.link_info;
-
- for (idx = 0; idx < event->namespaces.nr_namespaces; idx++)
- perf_event__get_ns_link_info(pid, perf_ns__name(idx),
- &ns_link_info[idx]);
-
- event->namespaces.header.type = PERF_RECORD_NAMESPACES;
-
- event->namespaces.header.size = (sizeof(event->namespaces) +
- (NR_NAMESPACES * sizeof(struct perf_ns_link_info)) +
- machine->id_hdr_size);
-
- if (perf_tool__process_synth_event(tool, event, machine, process) != 0)
- return -1;
-
- return 0;
-}
-
-static int perf_event__synthesize_fork(struct perf_tool *tool,
- union perf_event *event,
- pid_t pid, pid_t tgid, pid_t ppid,
- perf_event__handler_t process,
- struct machine *machine)
-{
- memset(&event->fork, 0, sizeof(event->fork) + machine->id_hdr_size);
-
- /*
- * for main thread set parent to ppid from status file. For other
- * threads set parent pid to main thread. ie., assume main thread
- * spawns all threads in a process
- */
- if (tgid == pid) {
- event->fork.ppid = ppid;
- event->fork.ptid = ppid;
- } else {
- event->fork.ppid = tgid;
- event->fork.ptid = tgid;
- }
- event->fork.pid = tgid;
- event->fork.tid = pid;
- event->fork.header.type = PERF_RECORD_FORK;
- event->fork.header.misc = PERF_RECORD_MISC_FORK_EXEC;
-
- event->fork.header.size = (sizeof(event->fork) + machine->id_hdr_size);
-
- if (perf_tool__process_synth_event(tool, event, machine, process) != 0)
- return -1;
-
- return 0;
-}
-
-int perf_event__synthesize_mmap_events(struct perf_tool *tool,
- union perf_event *event,
- pid_t pid, pid_t tgid,
- perf_event__handler_t process,
- struct machine *machine,
- bool mmap_data)
-{
- char filename[PATH_MAX];
- FILE *fp;
- unsigned long long t;
- bool truncation = false;
- unsigned long long timeout = proc_map_timeout * 1000000ULL;
- int rc = 0;
- const char *hugetlbfs_mnt = hugetlbfs__mountpoint();
- int hugetlbfs_mnt_len = hugetlbfs_mnt ? strlen(hugetlbfs_mnt) : 0;
-
- if (machine__is_default_guest(machine))
- return 0;
-
- snprintf(filename, sizeof(filename), "%s/proc/%d/task/%d/maps",
- machine->root_dir, pid, pid);
-
- fp = fopen(filename, "r");
- if (fp == NULL) {
- /*
- * We raced with a task exiting - just return:
- */
- pr_debug("couldn't open %s\n", filename);
- return -1;
- }
-
- event->header.type = PERF_RECORD_MMAP2;
- t = rdclock();
-
- while (1) {
- char bf[BUFSIZ];
- char prot[5];
- char execname[PATH_MAX];
- char anonstr[] = "//anon";
- unsigned int ino;
- size_t size;
- ssize_t n;
-
- if (fgets(bf, sizeof(bf), fp) == NULL)
- break;
-
- if ((rdclock() - t) > timeout) {
- pr_warning("Reading %s time out. "
- "You may want to increase "
- "the time limit by --proc-map-timeout\n",
- filename);
- truncation = true;
- goto out;
- }
-
- /* ensure null termination since stack will be reused. */
- strcpy(execname, "");
-
- /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */
- n = sscanf(bf, "%"PRI_lx64"-%"PRI_lx64" %s %"PRI_lx64" %x:%x %u %[^\n]\n",
- &event->mmap2.start, &event->mmap2.len, prot,
- &event->mmap2.pgoff, &event->mmap2.maj,
- &event->mmap2.min,
- &ino, execname);
-
- /*
- * Anon maps don't have the execname.
- */
- if (n < 7)
- continue;
-
- event->mmap2.ino = (u64)ino;
-
- /*
- * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c
- */
- if (machine__is_host(machine))
- event->header.misc = PERF_RECORD_MISC_USER;
- else
- event->header.misc = PERF_RECORD_MISC_GUEST_USER;
-
- /* map protection and flags bits */
- event->mmap2.prot = 0;
- event->mmap2.flags = 0;
- if (prot[0] == 'r')
- event->mmap2.prot |= PROT_READ;
- if (prot[1] == 'w')
- event->mmap2.prot |= PROT_WRITE;
- if (prot[2] == 'x')
- event->mmap2.prot |= PROT_EXEC;
-
- if (prot[3] == 's')
- event->mmap2.flags |= MAP_SHARED;
- else
- event->mmap2.flags |= MAP_PRIVATE;
-
- if (prot[2] != 'x') {
- if (!mmap_data || prot[0] != 'r')
- continue;
-
- event->header.misc |= PERF_RECORD_MISC_MMAP_DATA;
- }
-
-out:
- if (truncation)
- event->header.misc |= PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT;
-
- if (!strcmp(execname, ""))
- strcpy(execname, anonstr);
-
- if (hugetlbfs_mnt_len &&
- !strncmp(execname, hugetlbfs_mnt, hugetlbfs_mnt_len)) {
- strcpy(execname, anonstr);
- event->mmap2.flags |= MAP_HUGETLB;
- }
-
- size = strlen(execname) + 1;
- memcpy(event->mmap2.filename, execname, size);
- size = PERF_ALIGN(size, sizeof(u64));
- event->mmap2.len -= event->mmap.start;
- event->mmap2.header.size = (sizeof(event->mmap2) -
- (sizeof(event->mmap2.filename) - size));
- memset(event->mmap2.filename + size, 0, machine->id_hdr_size);
- event->mmap2.header.size += machine->id_hdr_size;
- event->mmap2.pid = tgid;
- event->mmap2.tid = pid;
-
- if (perf_tool__process_synth_event(tool, event, machine, process) != 0) {
- rc = -1;
- break;
- }
-
- if (truncation)
- break;
- }
-
- fclose(fp);
- return rc;
-}
-
-int perf_event__synthesize_modules(struct perf_tool *tool,
- perf_event__handler_t process,
- struct machine *machine)
-{
- int rc = 0;
- struct map *pos;
- struct maps *maps = machine__kernel_maps(machine);
- union perf_event *event = zalloc((sizeof(event->mmap) +
- machine->id_hdr_size));
- if (event == NULL) {
- pr_debug("Not enough memory synthesizing mmap event "
- "for kernel modules\n");
- return -1;
- }
-
- event->header.type = PERF_RECORD_MMAP;
-
- /*
- * kernel uses 0 for user space maps, see kernel/perf_event.c
- * __perf_event_mmap
- */
- if (machine__is_host(machine))
- event->header.misc = PERF_RECORD_MISC_KERNEL;
- else
- event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
-
- for (pos = maps__first(maps); pos; pos = map__next(pos)) {
- size_t size;
-
- if (!__map__is_kmodule(pos))
- continue;
-
- size = PERF_ALIGN(pos->dso->long_name_len + 1, sizeof(u64));
- event->mmap.header.type = PERF_RECORD_MMAP;
- event->mmap.header.size = (sizeof(event->mmap) -
- (sizeof(event->mmap.filename) - size));
- memset(event->mmap.filename + size, 0, machine->id_hdr_size);
- event->mmap.header.size += machine->id_hdr_size;
- event->mmap.start = pos->start;
- event->mmap.len = pos->end - pos->start;
- event->mmap.pid = machine->pid;
-
- memcpy(event->mmap.filename, pos->dso->long_name,
- pos->dso->long_name_len + 1);
- if (perf_tool__process_synth_event(tool, event, machine, process) != 0) {
- rc = -1;
- break;
- }
- }
-
- free(event);
- return rc;
-}
-
-static int __event__synthesize_thread(union perf_event *comm_event,
- union perf_event *mmap_event,
- union perf_event *fork_event,
- union perf_event *namespaces_event,
- pid_t pid, int full,
- perf_event__handler_t process,
- struct perf_tool *tool,
- struct machine *machine,
- bool mmap_data)
-{
- char filename[PATH_MAX];
- DIR *tasks;
- struct dirent *dirent;
- pid_t tgid, ppid;
- int rc = 0;
-
- /* special case: only send one comm event using passed in pid */
- if (!full) {
- tgid = perf_event__synthesize_comm(tool, comm_event, pid,
- process, machine);
-
- if (tgid == -1)
- return -1;
-
- if (perf_event__synthesize_namespaces(tool, namespaces_event, pid,
- tgid, process, machine) < 0)
- return -1;
-
- /*
- * send mmap only for thread group leader
- * see thread__init_map_groups
- */
- if (pid == tgid &&
- perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
- process, machine, mmap_data))
- return -1;
-
- return 0;
- }
-
- if (machine__is_default_guest(machine))
- return 0;
-
- snprintf(filename, sizeof(filename), "%s/proc/%d/task",
- machine->root_dir, pid);
-
- tasks = opendir(filename);
- if (tasks == NULL) {
- pr_debug("couldn't open %s\n", filename);
- return 0;
- }
-
- while ((dirent = readdir(tasks)) != NULL) {
- char *end;
- pid_t _pid;
-
- _pid = strtol(dirent->d_name, &end, 10);
- if (*end)
- continue;
-
- rc = -1;
- if (perf_event__prepare_comm(comm_event, _pid, machine,
- &tgid, &ppid) != 0)
- break;
-
- if (perf_event__synthesize_fork(tool, fork_event, _pid, tgid,
- ppid, process, machine) < 0)
- break;
-
- if (perf_event__synthesize_namespaces(tool, namespaces_event, _pid,
- tgid, process, machine) < 0)
- break;
-
- /*
- * Send the prepared comm event
- */
- if (perf_tool__process_synth_event(tool, comm_event, machine, process) != 0)
- break;
-
- rc = 0;
- if (_pid == pid) {
- /* process the parent's maps too */
- rc = perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
- process, machine, mmap_data);
- if (rc)
- break;
- }
- }
-
- closedir(tasks);
- return rc;
-}
-
-int perf_event__synthesize_thread_map(struct perf_tool *tool,
- struct perf_thread_map *threads,
- perf_event__handler_t process,
- struct machine *machine,
- bool mmap_data)
-{
- union perf_event *comm_event, *mmap_event, *fork_event;
- union perf_event *namespaces_event;
- int err = -1, thread, j;
-
- comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
- if (comm_event == NULL)
- goto out;
-
- mmap_event = malloc(sizeof(mmap_event->mmap2) + machine->id_hdr_size);
- if (mmap_event == NULL)
- goto out_free_comm;
-
- fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size);
- if (fork_event == NULL)
- goto out_free_mmap;
-
- namespaces_event = malloc(sizeof(namespaces_event->namespaces) +
- (NR_NAMESPACES * sizeof(struct perf_ns_link_info)) +
- machine->id_hdr_size);
- if (namespaces_event == NULL)
- goto out_free_fork;
-
- err = 0;
- for (thread = 0; thread < threads->nr; ++thread) {
- if (__event__synthesize_thread(comm_event, mmap_event,
- fork_event, namespaces_event,
- perf_thread_map__pid(threads, thread), 0,
- process, tool, machine,
- mmap_data)) {
- err = -1;
- break;
- }
-
- /*
- * comm.pid is set to thread group id by
- * perf_event__synthesize_comm
- */
- if ((int) comm_event->comm.pid != perf_thread_map__pid(threads, thread)) {
- bool need_leader = true;
-
- /* is thread group leader in thread_map? */
- for (j = 0; j < threads->nr; ++j) {
- if ((int) comm_event->comm.pid == perf_thread_map__pid(threads, j)) {
- need_leader = false;
- break;
- }
- }
-
- /* if not, generate events for it */
- if (need_leader &&
- __event__synthesize_thread(comm_event, mmap_event,
- fork_event, namespaces_event,
- comm_event->comm.pid, 0,
- process, tool, machine,
- mmap_data)) {
- err = -1;
- break;
- }
- }
- }
- free(namespaces_event);
-out_free_fork:
- free(fork_event);
-out_free_mmap:
- free(mmap_event);
-out_free_comm:
- free(comm_event);
-out:
- return err;
-}
-
-static int __perf_event__synthesize_threads(struct perf_tool *tool,
- perf_event__handler_t process,
- struct machine *machine,
- bool mmap_data,
- struct dirent **dirent,
- int start,
- int num)
-{
- union perf_event *comm_event, *mmap_event, *fork_event;
- union perf_event *namespaces_event;
- int err = -1;
- char *end;
- pid_t pid;
- int i;
-
- comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
- if (comm_event == NULL)
- goto out;
-
- mmap_event = malloc(sizeof(mmap_event->mmap2) + machine->id_hdr_size);
- if (mmap_event == NULL)
- goto out_free_comm;
-
- fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size);
- if (fork_event == NULL)
- goto out_free_mmap;
-
- namespaces_event = malloc(sizeof(namespaces_event->namespaces) +
- (NR_NAMESPACES * sizeof(struct perf_ns_link_info)) +
- machine->id_hdr_size);
- if (namespaces_event == NULL)
- goto out_free_fork;
-
- for (i = start; i < start + num; i++) {
- if (!isdigit(dirent[i]->d_name[0]))
- continue;
-
- pid = (pid_t)strtol(dirent[i]->d_name, &end, 10);
- /* only interested in proper numerical dirents */
- if (*end)
- continue;
- /*
- * We may race with exiting thread, so don't stop just because
- * one thread couldn't be synthesized.
- */
- __event__synthesize_thread(comm_event, mmap_event, fork_event,
- namespaces_event, pid, 1, process,
- tool, machine, mmap_data);
- }
- err = 0;
-
- free(namespaces_event);
-out_free_fork:
- free(fork_event);
-out_free_mmap:
- free(mmap_event);
-out_free_comm:
- free(comm_event);
-out:
- return err;
-}
-
-struct synthesize_threads_arg {
- struct perf_tool *tool;
- perf_event__handler_t process;
- struct machine *machine;
- bool mmap_data;
- struct dirent **dirent;
- int num;
- int start;
-};
-
-static void *synthesize_threads_worker(void *arg)
-{
- struct synthesize_threads_arg *args = arg;
-
- __perf_event__synthesize_threads(args->tool, args->process,
- args->machine, args->mmap_data,
- args->dirent,
- args->start, args->num);
- return NULL;
-}
-
-int perf_event__synthesize_threads(struct perf_tool *tool,
- perf_event__handler_t process,
- struct machine *machine,
- bool mmap_data,
- unsigned int nr_threads_synthesize)
-{
- struct synthesize_threads_arg *args = NULL;
- pthread_t *synthesize_threads = NULL;
- char proc_path[PATH_MAX];
- struct dirent **dirent;
- int num_per_thread;
- int m, n, i, j;
- int thread_nr;
- int base = 0;
- int err = -1;
-
-
- if (machine__is_default_guest(machine))
- return 0;
-
- snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir);
- n = scandir(proc_path, &dirent, 0, alphasort);
- if (n < 0)
- return err;
-
- if (nr_threads_synthesize == UINT_MAX)
- thread_nr = sysconf(_SC_NPROCESSORS_ONLN);
- else
- thread_nr = nr_threads_synthesize;
-
- if (thread_nr <= 1) {
- err = __perf_event__synthesize_threads(tool, process,
- machine, mmap_data,
- dirent, base, n);
- goto free_dirent;
- }
- if (thread_nr > n)
- thread_nr = n;
-
- synthesize_threads = calloc(sizeof(pthread_t), thread_nr);
- if (synthesize_threads == NULL)
- goto free_dirent;
-
- args = calloc(sizeof(*args), thread_nr);
- if (args == NULL)
- goto free_threads;
-
- num_per_thread = n / thread_nr;
- m = n % thread_nr;
- for (i = 0; i < thread_nr; i++) {
- args[i].tool = tool;
- args[i].process = process;
- args[i].machine = machine;
- args[i].mmap_data = mmap_data;
- args[i].dirent = dirent;
- }
- for (i = 0; i < m; i++) {
- args[i].num = num_per_thread + 1;
- args[i].start = i * args[i].num;
- }
- if (i != 0)
- base = args[i-1].start + args[i-1].num;
- for (j = i; j < thread_nr; j++) {
- args[j].num = num_per_thread;
- args[j].start = base + (j - i) * args[i].num;
- }
-
- for (i = 0; i < thread_nr; i++) {
- if (pthread_create(&synthesize_threads[i], NULL,
- synthesize_threads_worker, &args[i]))
- goto out_join;
- }
- err = 0;
-out_join:
- for (i = 0; i < thread_nr; i++)
- pthread_join(synthesize_threads[i], NULL);
- free(args);
-free_threads:
- free(synthesize_threads);
-free_dirent:
- for (i = 0; i < n; i++)
- zfree(&dirent[i]);
- free(dirent);
-
- return err;
-}
-
struct process_symbol_args {
const char *name;
u64 start;
return 0;
}
-int __weak perf_event__synthesize_extra_kmaps(struct perf_tool *tool __maybe_unused,
- perf_event__handler_t process __maybe_unused,
- struct machine *machine __maybe_unused)
-{
- return 0;
-}
-
-static int __perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
- perf_event__handler_t process,
- struct machine *machine)
-{
- size_t size;
- struct map *map = machine__kernel_map(machine);
- struct kmap *kmap;
- int err;
- union perf_event *event;
-
- if (map == NULL)
- return -1;
-
- kmap = map__kmap(map);
- if (!kmap->ref_reloc_sym)
- return -1;
-
- /*
- * We should get this from /sys/kernel/sections/.text, but till that is
- * available use this, and after it is use this as a fallback for older
- * kernels.
- */
- event = zalloc((sizeof(event->mmap) + machine->id_hdr_size));
- if (event == NULL) {
- pr_debug("Not enough memory synthesizing mmap event "
- "for kernel modules\n");
- return -1;
- }
-
- if (machine__is_host(machine)) {
- /*
- * kernel uses PERF_RECORD_MISC_USER for user space maps,
- * see kernel/perf_event.c __perf_event_mmap
- */
- event->header.misc = PERF_RECORD_MISC_KERNEL;
- } else {
- event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
- }
-
- size = snprintf(event->mmap.filename, sizeof(event->mmap.filename),
- "%s%s", machine->mmap_name, kmap->ref_reloc_sym->name) + 1;
- size = PERF_ALIGN(size, sizeof(u64));
- event->mmap.header.type = PERF_RECORD_MMAP;
- event->mmap.header.size = (sizeof(event->mmap) -
- (sizeof(event->mmap.filename) - size) + machine->id_hdr_size);
- event->mmap.pgoff = kmap->ref_reloc_sym->addr;
- event->mmap.start = map->start;
- event->mmap.len = map->end - event->mmap.start;
- event->mmap.pid = machine->pid;
-
- err = perf_tool__process_synth_event(tool, event, machine, process);
- free(event);
-
- return err;
-}
-
-int perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
- perf_event__handler_t process,
- struct machine *machine)
-{
- int err;
-
- err = __perf_event__synthesize_kernel_mmap(tool, process, machine);
- if (err < 0)
- return err;
-
- return perf_event__synthesize_extra_kmaps(tool, process, machine);
-}
-
-int perf_event__synthesize_thread_map2(struct perf_tool *tool,
- struct perf_thread_map *threads,
- perf_event__handler_t process,
- struct machine *machine)
-{
- union perf_event *event;
- int i, err, size;
-
- size = sizeof(event->thread_map);
- size += threads->nr * sizeof(event->thread_map.entries[0]);
-
- event = zalloc(size);
- if (!event)
- return -ENOMEM;
-
- event->header.type = PERF_RECORD_THREAD_MAP;
- event->header.size = size;
- event->thread_map.nr = threads->nr;
-
- for (i = 0; i < threads->nr; i++) {
- struct perf_record_thread_map_entry *entry = &event->thread_map.entries[i];
- char *comm = perf_thread_map__comm(threads, i);
-
- if (!comm)
- comm = (char *) "";
-
- entry->pid = perf_thread_map__pid(threads, i);
- strncpy((char *) &entry->comm, comm, sizeof(entry->comm));
- }
-
- err = process(tool, event, NULL, machine);
-
- free(event);
- return err;
-}
-
-static void synthesize_cpus(struct cpu_map_entries *cpus,
- struct perf_cpu_map *map)
-{
- int i;
-
- cpus->nr = map->nr;
-
- for (i = 0; i < map->nr; i++)
- cpus->cpu[i] = map->map[i];
-}
-
-static void synthesize_mask(struct perf_record_record_cpu_map *mask,
- struct perf_cpu_map *map, int max)
-{
- int i;
-
- mask->nr = BITS_TO_LONGS(max);
- mask->long_size = sizeof(long);
-
- for (i = 0; i < map->nr; i++)
- set_bit(map->map[i], mask->mask);
-}
-
-static size_t cpus_size(struct perf_cpu_map *map)
-{
- return sizeof(struct cpu_map_entries) + map->nr * sizeof(u16);
-}
-
-static size_t mask_size(struct perf_cpu_map *map, int *max)
-{
- int i;
-
- *max = 0;
-
- for (i = 0; i < map->nr; i++) {
- /* bit possition of the cpu is + 1 */
- int bit = map->map[i] + 1;
-
- if (bit > *max)
- *max = bit;
- }
-
- return sizeof(struct perf_record_record_cpu_map) + BITS_TO_LONGS(*max) * sizeof(long);
-}
-
-void *cpu_map_data__alloc(struct perf_cpu_map *map, size_t *size, u16 *type, int *max)
-{
- size_t size_cpus, size_mask;
- bool is_dummy = perf_cpu_map__empty(map);
-
- /*
- * Both array and mask data have variable size based
- * on the number of cpus and their actual values.
- * The size of the 'struct perf_record_cpu_map_data' is:
- *
- * array = size of 'struct cpu_map_entries' +
- * number of cpus * sizeof(u64)
- *
- * mask = size of 'struct perf_record_record_cpu_map' +
- * maximum cpu bit converted to size of longs
- *
- * and finaly + the size of 'struct perf_record_cpu_map_data'.
- */
- size_cpus = cpus_size(map);
- size_mask = mask_size(map, max);
-
- if (is_dummy || (size_cpus < size_mask)) {
- *size += size_cpus;
- *type = PERF_CPU_MAP__CPUS;
- } else {
- *size += size_mask;
- *type = PERF_CPU_MAP__MASK;
- }
-
- *size += sizeof(struct perf_record_cpu_map_data);
- *size = PERF_ALIGN(*size, sizeof(u64));
- return zalloc(*size);
-}
-
-void cpu_map_data__synthesize(struct perf_record_cpu_map_data *data, struct perf_cpu_map *map,
- u16 type, int max)
-{
- data->type = type;
-
- switch (type) {
- case PERF_CPU_MAP__CPUS:
- synthesize_cpus((struct cpu_map_entries *) data->data, map);
- break;
- case PERF_CPU_MAP__MASK:
- synthesize_mask((struct perf_record_record_cpu_map *)data->data, map, max);
- default:
- break;
- };
-}
-
-static struct perf_record_cpu_map *cpu_map_event__new(struct perf_cpu_map *map)
-{
- size_t size = sizeof(struct perf_record_cpu_map);
- struct perf_record_cpu_map *event;
- int max;
- u16 type;
-
- event = cpu_map_data__alloc(map, &size, &type, &max);
- if (!event)
- return NULL;
-
- event->header.type = PERF_RECORD_CPU_MAP;
- event->header.size = size;
- event->data.type = type;
-
- cpu_map_data__synthesize(&event->data, map, type, max);
- return event;
-}
-
-int perf_event__synthesize_cpu_map(struct perf_tool *tool,
- struct perf_cpu_map *map,
- perf_event__handler_t process,
- struct machine *machine)
-{
- struct perf_record_cpu_map *event;
- int err;
-
- event = cpu_map_event__new(map);
- if (!event)
- return -ENOMEM;
-
- err = process(tool, (union perf_event *) event, NULL, machine);
-
- free(event);
- return err;
-}
-
-int perf_event__synthesize_stat_config(struct perf_tool *tool,
- struct perf_stat_config *config,
- perf_event__handler_t process,
- struct machine *machine)
-{
- struct perf_record_stat_config *event;
- int size, i = 0, err;
-
- size = sizeof(*event);
- size += (PERF_STAT_CONFIG_TERM__MAX * sizeof(event->data[0]));
-
- event = zalloc(size);
- if (!event)
- return -ENOMEM;
-
- event->header.type = PERF_RECORD_STAT_CONFIG;
- event->header.size = size;
- event->nr = PERF_STAT_CONFIG_TERM__MAX;
-
-#define ADD(__term, __val) \
- event->data[i].tag = PERF_STAT_CONFIG_TERM__##__term; \
- event->data[i].val = __val; \
- i++;
-
- ADD(AGGR_MODE, config->aggr_mode)
- ADD(INTERVAL, config->interval)
- ADD(SCALE, config->scale)
-
- WARN_ONCE(i != PERF_STAT_CONFIG_TERM__MAX,
- "stat config terms unbalanced\n");
-#undef ADD
-
- err = process(tool, (union perf_event *) event, NULL, machine);
-
- free(event);
- return err;
-}
-
-int perf_event__synthesize_stat(struct perf_tool *tool,
- u32 cpu, u32 thread, u64 id,
- struct perf_counts_values *count,
- perf_event__handler_t process,
- struct machine *machine)
-{
- struct perf_record_stat event;
-
- event.header.type = PERF_RECORD_STAT;
- event.header.size = sizeof(event);
- event.header.misc = 0;
-
- event.id = id;
- event.cpu = cpu;
- event.thread = thread;
- event.val = count->val;
- event.ena = count->ena;
- event.run = count->run;
-
- return process(tool, (union perf_event *) &event, NULL, machine);
-}
-
-int perf_event__synthesize_stat_round(struct perf_tool *tool,
- u64 evtime, u64 type,
- perf_event__handler_t process,
- struct machine *machine)
-{
- struct perf_record_stat_round event;
-
- event.header.type = PERF_RECORD_STAT_ROUND;
- event.header.size = sizeof(event);
- event.header.misc = 0;
-
- event.time = evtime;
- event.type = type;
-
- return process(tool, (union perf_event *) &event, NULL, machine);
-}
-
void perf_event__read_stat_config(struct perf_stat_config *config,
struct perf_record_stat_config *event)
{
#include "trace-event.h"
#include "stat.h"
#include "string2.h"
-#include "util/synthetic-events.h"
#include "memswap.h"
#include "util.h"
#include "../perf-sys.h"
return 0;
}
-size_t perf_event__sample_event_size(const struct perf_sample *sample, u64 type,
- u64 read_format)
-{
- size_t sz, result = sizeof(struct perf_record_sample);
-
- if (type & PERF_SAMPLE_IDENTIFIER)
- result += sizeof(u64);
-
- if (type & PERF_SAMPLE_IP)
- result += sizeof(u64);
-
- if (type & PERF_SAMPLE_TID)
- result += sizeof(u64);
-
- if (type & PERF_SAMPLE_TIME)
- result += sizeof(u64);
-
- if (type & PERF_SAMPLE_ADDR)
- result += sizeof(u64);
-
- if (type & PERF_SAMPLE_ID)
- result += sizeof(u64);
-
- if (type & PERF_SAMPLE_STREAM_ID)
- result += sizeof(u64);
-
- if (type & PERF_SAMPLE_CPU)
- result += sizeof(u64);
-
- if (type & PERF_SAMPLE_PERIOD)
- result += sizeof(u64);
-
- if (type & PERF_SAMPLE_READ) {
- result += sizeof(u64);
- if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
- result += sizeof(u64);
- if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
- result += sizeof(u64);
- /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */
- if (read_format & PERF_FORMAT_GROUP) {
- sz = sample->read.group.nr *
- sizeof(struct sample_read_value);
- result += sz;
- } else {
- result += sizeof(u64);
- }
- }
-
- if (type & PERF_SAMPLE_CALLCHAIN) {
- sz = (sample->callchain->nr + 1) * sizeof(u64);
- result += sz;
- }
-
- if (type & PERF_SAMPLE_RAW) {
- result += sizeof(u32);
- result += sample->raw_size;
- }
-
- if (type & PERF_SAMPLE_BRANCH_STACK) {
- sz = sample->branch_stack->nr * sizeof(struct branch_entry);
- sz += sizeof(u64);
- result += sz;
- }
-
- if (type & PERF_SAMPLE_REGS_USER) {
- if (sample->user_regs.abi) {
- result += sizeof(u64);
- sz = hweight64(sample->user_regs.mask) * sizeof(u64);
- result += sz;
- } else {
- result += sizeof(u64);
- }
- }
-
- if (type & PERF_SAMPLE_STACK_USER) {
- sz = sample->user_stack.size;
- result += sizeof(u64);
- if (sz) {
- result += sz;
- result += sizeof(u64);
- }
- }
-
- if (type & PERF_SAMPLE_WEIGHT)
- result += sizeof(u64);
-
- if (type & PERF_SAMPLE_DATA_SRC)
- result += sizeof(u64);
-
- if (type & PERF_SAMPLE_TRANSACTION)
- result += sizeof(u64);
-
- if (type & PERF_SAMPLE_REGS_INTR) {
- if (sample->intr_regs.abi) {
- result += sizeof(u64);
- sz = hweight64(sample->intr_regs.mask) * sizeof(u64);
- result += sz;
- } else {
- result += sizeof(u64);
- }
- }
-
- if (type & PERF_SAMPLE_PHYS_ADDR)
- result += sizeof(u64);
-
- return result;
-}
-
-int perf_event__synthesize_sample(union perf_event *event, u64 type,
- u64 read_format,
- const struct perf_sample *sample)
-{
- __u64 *array;
- size_t sz;
- /*
- * used for cross-endian analysis. See git commit 65014ab3
- * for why this goofiness is needed.
- */
- union u64_swap u;
-
- array = event->sample.array;
-
- if (type & PERF_SAMPLE_IDENTIFIER) {
- *array = sample->id;
- array++;
- }
-
- if (type & PERF_SAMPLE_IP) {
- *array = sample->ip;
- array++;
- }
-
- if (type & PERF_SAMPLE_TID) {
- u.val32[0] = sample->pid;
- u.val32[1] = sample->tid;
- *array = u.val64;
- array++;
- }
-
- if (type & PERF_SAMPLE_TIME) {
- *array = sample->time;
- array++;
- }
-
- if (type & PERF_SAMPLE_ADDR) {
- *array = sample->addr;
- array++;
- }
-
- if (type & PERF_SAMPLE_ID) {
- *array = sample->id;
- array++;
- }
-
- if (type & PERF_SAMPLE_STREAM_ID) {
- *array = sample->stream_id;
- array++;
- }
-
- if (type & PERF_SAMPLE_CPU) {
- u.val32[0] = sample->cpu;
- u.val32[1] = 0;
- *array = u.val64;
- array++;
- }
-
- if (type & PERF_SAMPLE_PERIOD) {
- *array = sample->period;
- array++;
- }
-
- if (type & PERF_SAMPLE_READ) {
- if (read_format & PERF_FORMAT_GROUP)
- *array = sample->read.group.nr;
- else
- *array = sample->read.one.value;
- array++;
-
- if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
- *array = sample->read.time_enabled;
- array++;
- }
-
- if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
- *array = sample->read.time_running;
- array++;
- }
-
- /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */
- if (read_format & PERF_FORMAT_GROUP) {
- sz = sample->read.group.nr *
- sizeof(struct sample_read_value);
- memcpy(array, sample->read.group.values, sz);
- array = (void *)array + sz;
- } else {
- *array = sample->read.one.id;
- array++;
- }
- }
-
- if (type & PERF_SAMPLE_CALLCHAIN) {
- sz = (sample->callchain->nr + 1) * sizeof(u64);
- memcpy(array, sample->callchain, sz);
- array = (void *)array + sz;
- }
-
- if (type & PERF_SAMPLE_RAW) {
- u.val32[0] = sample->raw_size;
- *array = u.val64;
- array = (void *)array + sizeof(u32);
-
- memcpy(array, sample->raw_data, sample->raw_size);
- array = (void *)array + sample->raw_size;
- }
-
- if (type & PERF_SAMPLE_BRANCH_STACK) {
- sz = sample->branch_stack->nr * sizeof(struct branch_entry);
- sz += sizeof(u64);
- memcpy(array, sample->branch_stack, sz);
- array = (void *)array + sz;
- }
-
- if (type & PERF_SAMPLE_REGS_USER) {
- if (sample->user_regs.abi) {
- *array++ = sample->user_regs.abi;
- sz = hweight64(sample->user_regs.mask) * sizeof(u64);
- memcpy(array, sample->user_regs.regs, sz);
- array = (void *)array + sz;
- } else {
- *array++ = 0;
- }
- }
-
- if (type & PERF_SAMPLE_STACK_USER) {
- sz = sample->user_stack.size;
- *array++ = sz;
- if (sz) {
- memcpy(array, sample->user_stack.data, sz);
- array = (void *)array + sz;
- *array++ = sz;
- }
- }
-
- if (type & PERF_SAMPLE_WEIGHT) {
- *array = sample->weight;
- array++;
- }
-
- if (type & PERF_SAMPLE_DATA_SRC) {
- *array = sample->data_src;
- array++;
- }
-
- if (type & PERF_SAMPLE_TRANSACTION) {
- *array = sample->transaction;
- array++;
- }
-
- if (type & PERF_SAMPLE_REGS_INTR) {
- if (sample->intr_regs.abi) {
- *array++ = sample->intr_regs.abi;
- sz = hweight64(sample->intr_regs.mask) * sizeof(u64);
- memcpy(array, sample->intr_regs.regs, sz);
- array = (void *)array + sz;
- } else {
- *array++ = 0;
- }
- }
-
- if (type & PERF_SAMPLE_PHYS_ADDR) {
- *array = sample->phys_addr;
- array++;
- }
-
- return 0;
-}
-
struct tep_format_field *perf_evsel__field(struct evsel *evsel, const char *name)
{
return tep_find_field(evsel->tp_format, name);
#include "util.h" // page_size, perf_exe()
#include "cputopo.h"
#include "bpf-event.h"
-#include "util/synthetic-events.h"
#include <linux/ctype.h>
#include <internal/lib.h>
struct perf_file_section ids;
};
-struct feat_fd {
- struct perf_header *ph;
- int fd;
- void *buf; /* Either buf != NULL or fd >= 0 */
- ssize_t offset;
- size_t size;
- struct evsel *events;
-};
-
void perf_header__set_feat(struct perf_header *header, int feat)
{
set_bit(feat, header->adds_features);
return 0;
}
-struct feature_ops {
- int (*write)(struct feat_fd *ff, struct evlist *evlist);
- void (*print)(struct feat_fd *ff, FILE *fp);
- int (*process)(struct feat_fd *ff, void *data);
- const char *name;
- bool full_only;
- bool synthesize;
-};
-
#define FEAT_OPR(n, func, __full_only) \
[HEADER_##n] = { \
.name = __stringify(n), \
#define process_branch_stack NULL
#define process_stat NULL
+// Only used in util/synthetic-events.c
+const struct perf_header_feature_ops feat_ops[HEADER_LAST_FEATURE];
-static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = {
+const struct perf_header_feature_ops feat_ops[HEADER_LAST_FEATURE] = {
FEAT_OPN(TRACING_DATA, tracing_data, false),
FEAT_OPN(BUILD_ID, build_id, false),
FEAT_OPR(HOSTNAME, hostname, false),
return -ENOMEM;
}
-int perf_event__synthesize_attr(struct perf_tool *tool,
- struct perf_event_attr *attr, u32 ids, u64 *id,
- perf_event__handler_t process)
-{
- union perf_event *ev;
- size_t size;
- int err;
-
- size = sizeof(struct perf_event_attr);
- size = PERF_ALIGN(size, sizeof(u64));
- size += sizeof(struct perf_event_header);
- size += ids * sizeof(u64);
-
- ev = zalloc(size);
-
- if (ev == NULL)
- return -ENOMEM;
-
- ev->attr.attr = *attr;
- memcpy(ev->attr.id, id, ids * sizeof(u64));
-
- ev->attr.header.type = PERF_RECORD_HEADER_ATTR;
- ev->attr.header.size = (u16)size;
-
- if (ev->attr.header.size == size)
- err = process(tool, ev, NULL, NULL);
- else
- err = -E2BIG;
-
- free(ev);
-
- return err;
-}
-
-int perf_event__synthesize_features(struct perf_tool *tool,
- struct perf_session *session,
- struct evlist *evlist,
- perf_event__handler_t process)
-{
- struct perf_header *header = &session->header;
- struct feat_fd ff;
- struct perf_record_header_feature *fe;
- size_t sz, sz_hdr;
- int feat, ret;
-
- sz_hdr = sizeof(fe->header);
- sz = sizeof(union perf_event);
- /* get a nice alignment */
- sz = PERF_ALIGN(sz, page_size);
-
- memset(&ff, 0, sizeof(ff));
-
- ff.buf = malloc(sz);
- if (!ff.buf)
- return -ENOMEM;
-
- ff.size = sz - sz_hdr;
- ff.ph = &session->header;
-
- for_each_set_bit(feat, header->adds_features, HEADER_FEAT_BITS) {
- if (!feat_ops[feat].synthesize) {
- pr_debug("No record header feature for header :%d\n", feat);
- continue;
- }
-
- ff.offset = sizeof(*fe);
-
- ret = feat_ops[feat].write(&ff, evlist);
- if (ret || ff.offset <= (ssize_t)sizeof(*fe)) {
- pr_debug("Error writing feature\n");
- continue;
- }
- /* ff.buf may have changed due to realloc in do_write() */
- fe = ff.buf;
- memset(fe, 0, sizeof(*fe));
-
- fe->feat_id = feat;
- fe->header.type = PERF_RECORD_HEADER_FEATURE;
- fe->header.size = ff.offset;
-
- ret = process(tool, ff.buf, NULL, NULL);
- if (ret) {
- free(ff.buf);
- return ret;
- }
- }
-
- /* Send HEADER_LAST_FEATURE mark. */
- fe = ff.buf;
- fe->feat_id = HEADER_LAST_FEATURE;
- fe->header.type = PERF_RECORD_HEADER_FEATURE;
- fe->header.size = sizeof(*fe);
-
- ret = process(tool, ff.buf, NULL, NULL);
-
- free(ff.buf);
- return ret;
-}
-
int perf_event__process_feature(struct perf_session *session,
union perf_event *event)
{
return 0;
}
-static struct perf_record_event_update *
-event_update_event__new(size_t size, u64 type, u64 id)
-{
- struct perf_record_event_update *ev;
-
- size += sizeof(*ev);
- size = PERF_ALIGN(size, sizeof(u64));
-
- ev = zalloc(size);
- if (ev) {
- ev->header.type = PERF_RECORD_EVENT_UPDATE;
- ev->header.size = (u16)size;
- ev->type = type;
- ev->id = id;
- }
- return ev;
-}
-
-int
-perf_event__synthesize_event_update_unit(struct perf_tool *tool,
- struct evsel *evsel,
- perf_event__handler_t process)
-{
- struct perf_record_event_update *ev;
- size_t size = strlen(evsel->unit);
- int err;
-
- ev = event_update_event__new(size + 1, PERF_EVENT_UPDATE__UNIT, evsel->id[0]);
- if (ev == NULL)
- return -ENOMEM;
-
- strlcpy(ev->data, evsel->unit, size + 1);
- err = process(tool, (union perf_event *)ev, NULL, NULL);
- free(ev);
- return err;
-}
-
-int
-perf_event__synthesize_event_update_scale(struct perf_tool *tool,
- struct evsel *evsel,
- perf_event__handler_t process)
-{
- struct perf_record_event_update *ev;
- struct perf_record_event_update_scale *ev_data;
- int err;
-
- ev = event_update_event__new(sizeof(*ev_data), PERF_EVENT_UPDATE__SCALE, evsel->id[0]);
- if (ev == NULL)
- return -ENOMEM;
-
- ev_data = (struct perf_record_event_update_scale *)ev->data;
- ev_data->scale = evsel->scale;
- err = process(tool, (union perf_event*) ev, NULL, NULL);
- free(ev);
- return err;
-}
-
-int
-perf_event__synthesize_event_update_name(struct perf_tool *tool,
- struct evsel *evsel,
- perf_event__handler_t process)
-{
- struct perf_record_event_update *ev;
- size_t len = strlen(evsel->name);
- int err;
-
- ev = event_update_event__new(len + 1, PERF_EVENT_UPDATE__NAME, evsel->id[0]);
- if (ev == NULL)
- return -ENOMEM;
-
- strlcpy(ev->data, evsel->name, len + 1);
- err = process(tool, (union perf_event*) ev, NULL, NULL);
- free(ev);
- return err;
-}
-
-int
-perf_event__synthesize_event_update_cpus(struct perf_tool *tool,
- struct evsel *evsel,
- perf_event__handler_t process)
-{
- size_t size = sizeof(struct perf_record_event_update);
- struct perf_record_event_update *ev;
- int max, err;
- u16 type;
-
- if (!evsel->core.own_cpus)
- return 0;
-
- ev = cpu_map_data__alloc(evsel->core.own_cpus, &size, &type, &max);
- if (!ev)
- return -ENOMEM;
-
- ev->header.type = PERF_RECORD_EVENT_UPDATE;
- ev->header.size = (u16)size;
- ev->type = PERF_EVENT_UPDATE__CPUS;
- ev->id = evsel->id[0];
-
- cpu_map_data__synthesize((struct perf_record_cpu_map_data *)ev->data,
- evsel->core.own_cpus,
- type, max);
-
- err = process(tool, (union perf_event*) ev, NULL, NULL);
- free(ev);
- return err;
-}
-
size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp)
{
struct perf_record_event_update *ev = &event->event_update;
return ret;
}
-int perf_event__synthesize_attrs(struct perf_tool *tool,
- struct evlist *evlist,
- perf_event__handler_t process)
-{
- struct evsel *evsel;
- int err = 0;
-
- evlist__for_each_entry(evlist, evsel) {
- err = perf_event__synthesize_attr(tool, &evsel->core.attr, evsel->ids,
- evsel->id, process);
- if (err) {
- pr_debug("failed to create perf header attribute\n");
- return err;
- }
- }
-
- return err;
-}
-
-static bool has_unit(struct evsel *counter)
-{
- return counter->unit && *counter->unit;
-}
-
-static bool has_scale(struct evsel *counter)
-{
- return counter->scale != 1;
-}
-
-int perf_event__synthesize_extra_attr(struct perf_tool *tool,
- struct evlist *evsel_list,
- perf_event__handler_t process,
- bool is_pipe)
-{
- struct evsel *counter;
- int err;
-
- /*
- * Synthesize other events stuff not carried within
- * attr event - unit, scale, name
- */
- evlist__for_each_entry(evsel_list, counter) {
- if (!counter->supported)
- continue;
-
- /*
- * Synthesize unit and scale only if it's defined.
- */
- if (has_unit(counter)) {
- err = perf_event__synthesize_event_update_unit(tool, counter, process);
- if (err < 0) {
- pr_err("Couldn't synthesize evsel unit.\n");
- return err;
- }
- }
-
- if (has_scale(counter)) {
- err = perf_event__synthesize_event_update_scale(tool, counter, process);
- if (err < 0) {
- pr_err("Couldn't synthesize evsel counter.\n");
- return err;
- }
- }
-
- if (counter->core.own_cpus) {
- err = perf_event__synthesize_event_update_cpus(tool, counter, process);
- if (err < 0) {
- pr_err("Couldn't synthesize evsel cpus.\n");
- return err;
- }
- }
-
- /*
- * Name is needed only for pipe output,
- * perf.data carries event names.
- */
- if (is_pipe) {
- err = perf_event__synthesize_event_update_name(tool, counter, process);
- if (err < 0) {
- pr_err("Couldn't synthesize evsel name.\n");
- return err;
- }
- }
- }
- return 0;
-}
-
int perf_event__process_attr(struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct evlist **pevlist)
return 0;
}
-int perf_event__synthesize_tracing_data(struct perf_tool *tool, int fd,
- struct evlist *evlist,
- perf_event__handler_t process)
-{
- union perf_event ev;
- struct tracing_data *tdata;
- ssize_t size = 0, aligned_size = 0, padding;
- struct feat_fd ff;
- int err __maybe_unused = 0;
-
- /*
- * We are going to store the size of the data followed
- * by the data contents. Since the fd descriptor is a pipe,
- * we cannot seek back to store the size of the data once
- * we know it. Instead we:
- *
- * - write the tracing data to the temp file
- * - get/write the data size to pipe
- * - write the tracing data from the temp file
- * to the pipe
- */
- tdata = tracing_data_get(&evlist->core.entries, fd, true);
- if (!tdata)
- return -1;
-
- memset(&ev, 0, sizeof(ev));
-
- ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA;
- size = tdata->size;
- aligned_size = PERF_ALIGN(size, sizeof(u64));
- padding = aligned_size - size;
- ev.tracing_data.header.size = sizeof(ev.tracing_data);
- ev.tracing_data.size = aligned_size;
-
- process(tool, &ev, NULL, NULL);
-
- /*
- * The put function will copy all the tracing data
- * stored in temp file to the pipe.
- */
- tracing_data_put(tdata);
-
- ff = (struct feat_fd){ .fd = fd };
- if (write_padded(&ff, NULL, 0, padding))
- return -1;
-
- return aligned_size;
-}
-
int perf_event__process_tracing_data(struct perf_session *session,
union perf_event *event)
{
return size_read + padding;
}
-int perf_event__synthesize_build_id(struct perf_tool *tool,
- struct dso *pos, u16 misc,
- perf_event__handler_t process,
- struct machine *machine)
-{
- union perf_event ev;
- size_t len;
- int err = 0;
-
- if (!pos->hit)
- return err;
-
- memset(&ev, 0, sizeof(ev));
-
- len = pos->long_name_len + 1;
- len = PERF_ALIGN(len, NAME_ALIGN);
- memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id));
- ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID;
- ev.build_id.header.misc = misc;
- ev.build_id.pid = machine->pid;
- ev.build_id.header.size = sizeof(ev.build_id) + len;
- memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len);
-
- err = process(tool, &ev, NULL, machine);
-
- return err;
-}
-
int perf_event__process_build_id(struct perf_session *session,
union perf_event *event)
{
struct perf_env env;
};
+struct feat_fd {
+ struct perf_header *ph;
+ int fd;
+ void *buf; /* Either buf != NULL or fd >= 0 */
+ ssize_t offset;
+ size_t size;
+ struct evsel *events;
+};
+
+struct perf_header_feature_ops {
+ int (*write)(struct feat_fd *ff, struct evlist *evlist);
+ void (*print)(struct feat_fd *ff, FILE *fp);
+ int (*process)(struct feat_fd *ff, void *data);
+ const char *name;
+ bool full_only;
+ bool synthesize;
+};
+
struct evlist;
struct perf_session;
struct perf_tool;
#include "symbol.h"
#include "sort.h"
#include "strlist.h"
-#include "util/synthetic-events.h"
#include "target.h"
#include "thread.h"
#include "util.h"
return rc;
}
-int __machine__synthesize_threads(struct machine *machine, struct perf_tool *tool,
- struct target *target, struct perf_thread_map *threads,
- perf_event__handler_t process, bool data_mmap,
- unsigned int nr_threads_synthesize)
-{
- if (target__has_task(target))
- return perf_event__synthesize_thread_map(tool, threads, process, machine, data_mmap);
- else if (target__has_cpu(target))
- return perf_event__synthesize_threads(tool, process,
- machine, data_mmap,
- nr_threads_synthesize);
- /* command specified */
- return 0;
-}
-
-int machine__synthesize_threads(struct machine *machine, struct target *target,
- struct perf_thread_map *threads, bool data_mmap,
- unsigned int nr_threads_synthesize)
-{
- return __machine__synthesize_threads(machine, NULL, target, threads,
- perf_event__process, data_mmap,
- nr_threads_synthesize);
-}
-
pid_t machine__get_current_tid(struct machine *machine, int cpu)
{
int nr_cpus = min(machine->env->nr_cpus_online, MAX_NR_CPUS);
#include <string.h>
#include <unistd.h>
#include <asm/bug.h>
+#include <linux/kernel.h>
#include <linux/zalloc.h>
+static const char *perf_ns__names[] = {
+ [NET_NS_INDEX] = "net",
+ [UTS_NS_INDEX] = "uts",
+ [IPC_NS_INDEX] = "ipc",
+ [PID_NS_INDEX] = "pid",
+ [USER_NS_INDEX] = "user",
+ [MNT_NS_INDEX] = "mnt",
+ [CGROUP_NS_INDEX] = "cgroup",
+};
+
+const char *perf_ns__name(unsigned int id)
+{
+ if (id >= ARRAY_SIZE(perf_ns__names))
+ return "UNKNOWN";
+ return perf_ns__names[id];
+}
+
struct namespaces *namespaces__new(struct perf_record_namespaces *event)
{
struct namespaces *namespaces;
#define nsinfo__zput(nsi) __nsinfo__zput(&nsi)
+const char *perf_ns__name(unsigned int id);
+
#endif /* __PERF_NAMESPACES_H */
#include "thread-stack.h"
#include "sample-raw.h"
#include "stat.h"
-#include "util/synthetic-events.h"
#include "util.h"
#include "ui/progress.h"
#include "../perf.h"
}
return 0;
}
-
-int perf_event__synthesize_id_index(struct perf_tool *tool,
- perf_event__handler_t process,
- struct evlist *evlist,
- struct machine *machine)
-{
- union perf_event *ev;
- struct evsel *evsel;
- size_t nr = 0, i = 0, sz, max_nr, n;
- int err;
-
- pr_debug2("Synthesizing id index\n");
-
- max_nr = (UINT16_MAX - sizeof(struct perf_record_id_index)) /
- sizeof(struct id_index_entry);
-
- evlist__for_each_entry(evlist, evsel)
- nr += evsel->ids;
-
- n = nr > max_nr ? max_nr : nr;
- sz = sizeof(struct perf_record_id_index) + n * sizeof(struct id_index_entry);
- ev = zalloc(sz);
- if (!ev)
- return -ENOMEM;
-
- ev->id_index.header.type = PERF_RECORD_ID_INDEX;
- ev->id_index.header.size = sz;
- ev->id_index.nr = n;
-
- evlist__for_each_entry(evlist, evsel) {
- u32 j;
-
- for (j = 0; j < evsel->ids; j++) {
- struct id_index_entry *e;
- struct perf_sample_id *sid;
-
- if (i >= n) {
- err = process(tool, ev, NULL, machine);
- if (err)
- goto out_err;
- nr -= n;
- i = 0;
- }
-
- e = &ev->id_index.entries[i++];
-
- e->id = evsel->id[j];
-
- sid = perf_evlist__id2sid(evlist, e->id);
- if (!sid) {
- free(ev);
- return -ENOENT;
- }
-
- e->idx = sid->idx;
- e->cpu = sid->cpu;
- e->tid = sid->tid;
- }
- }
-
- sz = sizeof(struct perf_record_id_index) + nr * sizeof(struct id_index_entry);
- ev->id_index.header.size = sz;
- ev->id_index.nr = nr;
-
- err = process(tool, ev, NULL, machine);
-out_err:
- free(ev);
-
- return err;
-}
#include "target.h"
#include "evlist.h"
#include "evsel.h"
-#include "util/synthetic-events.h"
#include "thread_map.h"
#include <linux/zalloc.h>
return perf_evsel__open_per_thread(evsel, evsel->core.threads);
}
-
-int perf_event__synthesize_stat_events(struct perf_stat_config *config,
- struct perf_tool *tool,
- struct evlist *evlist,
- perf_event__handler_t process,
- bool attrs)
-{
- int err;
-
- if (attrs) {
- err = perf_event__synthesize_attrs(tool, evlist, process);
- if (err < 0) {
- pr_err("Couldn't synthesize attrs.\n");
- return err;
- }
- }
-
- err = perf_event__synthesize_extra_attr(tool, evlist, process,
- attrs);
-
- err = perf_event__synthesize_thread_map2(tool, evlist->core.threads,
- process, NULL);
- if (err < 0) {
- pr_err("Couldn't synthesize thread map.\n");
- return err;
- }
-
- err = perf_event__synthesize_cpu_map(tool, evlist->core.cpus,
- process, NULL);
- if (err < 0) {
- pr_err("Couldn't synthesize thread map.\n");
- return err;
- }
-
- err = perf_event__synthesize_stat_config(tool, config, process, NULL);
- if (err < 0) {
- pr_err("Couldn't synthesize config.\n");
- return err;
- }
-
- return 0;
-}
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include "util/debug.h"
+#include "util/dso.h"
+#include "util/event.h"
+#include "util/evlist.h"
+#include "util/machine.h"
+#include "util/map.h"
+#include "util/map_symbol.h"
+#include "util/branch.h"
+#include "util/memswap.h"
+#include "util/namespaces.h"
+#include "util/session.h"
+#include "util/stat.h"
+#include "util/symbol.h"
+#include "util/synthetic-events.h"
+#include "util/target.h"
+#include "util/time-utils.h"
+#include "util/util.h"
+#include <linux/bitops.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/zalloc.h>
+#include <linux/perf_event.h>
+#include <asm/bug.h>
+#include <perf/evsel.h>
+#include <internal/cpumap.h>
+#include <perf/cpumap.h>
+#include <internal/threadmap.h>
+#include <perf/threadmap.h>
+#include <symbol/kallsyms.h>
+#include <dirent.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <string.h>
+#include <uapi/linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */
+#include <api/fs/fs.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#define DEFAULT_PROC_MAP_PARSE_TIMEOUT 500
+
+unsigned int proc_map_timeout = DEFAULT_PROC_MAP_PARSE_TIMEOUT;
+
+int perf_tool__process_synth_event(struct perf_tool *tool,
+ union perf_event *event,
+ struct machine *machine,
+ perf_event__handler_t process)
+{
+ struct perf_sample synth_sample = {
+ .pid = -1,
+ .tid = -1,
+ .time = -1,
+ .stream_id = -1,
+ .cpu = -1,
+ .period = 1,
+ .cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK,
+ };
+
+ return process(tool, event, &synth_sample, machine);
+};
+
+/*
+ * Assumes that the first 4095 bytes of /proc/pid/stat contains
+ * the comm, tgid and ppid.
+ */
+static int perf_event__get_comm_ids(pid_t pid, char *comm, size_t len,
+ pid_t *tgid, pid_t *ppid)
+{
+ char filename[PATH_MAX];
+ char bf[4096];
+ int fd;
+ size_t size = 0;
+ ssize_t n;
+ char *name, *tgids, *ppids;
+
+ *tgid = -1;
+ *ppid = -1;
+
+ snprintf(filename, sizeof(filename), "/proc/%d/status", pid);
+
+ fd = open(filename, O_RDONLY);
+ if (fd < 0) {
+ pr_debug("couldn't open %s\n", filename);
+ return -1;
+ }
+
+ n = read(fd, bf, sizeof(bf) - 1);
+ close(fd);
+ if (n <= 0) {
+ pr_warning("Couldn't get COMM, tigd and ppid for pid %d\n",
+ pid);
+ return -1;
+ }
+ bf[n] = '\0';
+
+ name = strstr(bf, "Name:");
+ tgids = strstr(bf, "Tgid:");
+ ppids = strstr(bf, "PPid:");
+
+ if (name) {
+ char *nl;
+
+ name = skip_spaces(name + 5); /* strlen("Name:") */
+ nl = strchr(name, '\n');
+ if (nl)
+ *nl = '\0';
+
+ size = strlen(name);
+ if (size >= len)
+ size = len - 1;
+ memcpy(comm, name, size);
+ comm[size] = '\0';
+ } else {
+ pr_debug("Name: string not found for pid %d\n", pid);
+ }
+
+ if (tgids) {
+ tgids += 5; /* strlen("Tgid:") */
+ *tgid = atoi(tgids);
+ } else {
+ pr_debug("Tgid: string not found for pid %d\n", pid);
+ }
+
+ if (ppids) {
+ ppids += 5; /* strlen("PPid:") */
+ *ppid = atoi(ppids);
+ } else {
+ pr_debug("PPid: string not found for pid %d\n", pid);
+ }
+
+ return 0;
+}
+
+static int perf_event__prepare_comm(union perf_event *event, pid_t pid,
+ struct machine *machine,
+ pid_t *tgid, pid_t *ppid)
+{
+ size_t size;
+
+ *ppid = -1;
+
+ memset(&event->comm, 0, sizeof(event->comm));
+
+ if (machine__is_host(machine)) {
+ if (perf_event__get_comm_ids(pid, event->comm.comm,
+ sizeof(event->comm.comm),
+ tgid, ppid) != 0) {
+ return -1;
+ }
+ } else {
+ *tgid = machine->pid;
+ }
+
+ if (*tgid < 0)
+ return -1;
+
+ event->comm.pid = *tgid;
+ event->comm.header.type = PERF_RECORD_COMM;
+
+ size = strlen(event->comm.comm) + 1;
+ size = PERF_ALIGN(size, sizeof(u64));
+ memset(event->comm.comm + size, 0, machine->id_hdr_size);
+ event->comm.header.size = (sizeof(event->comm) -
+ (sizeof(event->comm.comm) - size) +
+ machine->id_hdr_size);
+ event->comm.tid = pid;
+
+ return 0;
+}
+
+pid_t perf_event__synthesize_comm(struct perf_tool *tool,
+ union perf_event *event, pid_t pid,
+ perf_event__handler_t process,
+ struct machine *machine)
+{
+ pid_t tgid, ppid;
+
+ if (perf_event__prepare_comm(event, pid, machine, &tgid, &ppid) != 0)
+ return -1;
+
+ if (perf_tool__process_synth_event(tool, event, machine, process) != 0)
+ return -1;
+
+ return tgid;
+}
+
+static void perf_event__get_ns_link_info(pid_t pid, const char *ns,
+ struct perf_ns_link_info *ns_link_info)
+{
+ struct stat64 st;
+ char proc_ns[128];
+
+ sprintf(proc_ns, "/proc/%u/ns/%s", pid, ns);
+ if (stat64(proc_ns, &st) == 0) {
+ ns_link_info->dev = st.st_dev;
+ ns_link_info->ino = st.st_ino;
+ }
+}
+
+int perf_event__synthesize_namespaces(struct perf_tool *tool,
+ union perf_event *event,
+ pid_t pid, pid_t tgid,
+ perf_event__handler_t process,
+ struct machine *machine)
+{
+ u32 idx;
+ struct perf_ns_link_info *ns_link_info;
+
+ if (!tool || !tool->namespace_events)
+ return 0;
+
+ memset(&event->namespaces, 0, (sizeof(event->namespaces) +
+ (NR_NAMESPACES * sizeof(struct perf_ns_link_info)) +
+ machine->id_hdr_size));
+
+ event->namespaces.pid = tgid;
+ event->namespaces.tid = pid;
+
+ event->namespaces.nr_namespaces = NR_NAMESPACES;
+
+ ns_link_info = event->namespaces.link_info;
+
+ for (idx = 0; idx < event->namespaces.nr_namespaces; idx++)
+ perf_event__get_ns_link_info(pid, perf_ns__name(idx),
+ &ns_link_info[idx]);
+
+ event->namespaces.header.type = PERF_RECORD_NAMESPACES;
+
+ event->namespaces.header.size = (sizeof(event->namespaces) +
+ (NR_NAMESPACES * sizeof(struct perf_ns_link_info)) +
+ machine->id_hdr_size);
+
+ if (perf_tool__process_synth_event(tool, event, machine, process) != 0)
+ return -1;
+
+ return 0;
+}
+
+static int perf_event__synthesize_fork(struct perf_tool *tool,
+ union perf_event *event,
+ pid_t pid, pid_t tgid, pid_t ppid,
+ perf_event__handler_t process,
+ struct machine *machine)
+{
+ memset(&event->fork, 0, sizeof(event->fork) + machine->id_hdr_size);
+
+ /*
+ * for main thread set parent to ppid from status file. For other
+ * threads set parent pid to main thread. ie., assume main thread
+ * spawns all threads in a process
+ */
+ if (tgid == pid) {
+ event->fork.ppid = ppid;
+ event->fork.ptid = ppid;
+ } else {
+ event->fork.ppid = tgid;
+ event->fork.ptid = tgid;
+ }
+ event->fork.pid = tgid;
+ event->fork.tid = pid;
+ event->fork.header.type = PERF_RECORD_FORK;
+ event->fork.header.misc = PERF_RECORD_MISC_FORK_EXEC;
+
+ event->fork.header.size = (sizeof(event->fork) + machine->id_hdr_size);
+
+ if (perf_tool__process_synth_event(tool, event, machine, process) != 0)
+ return -1;
+
+ return 0;
+}
+
+int perf_event__synthesize_mmap_events(struct perf_tool *tool,
+ union perf_event *event,
+ pid_t pid, pid_t tgid,
+ perf_event__handler_t process,
+ struct machine *machine,
+ bool mmap_data)
+{
+ char filename[PATH_MAX];
+ FILE *fp;
+ unsigned long long t;
+ bool truncation = false;
+ unsigned long long timeout = proc_map_timeout * 1000000ULL;
+ int rc = 0;
+ const char *hugetlbfs_mnt = hugetlbfs__mountpoint();
+ int hugetlbfs_mnt_len = hugetlbfs_mnt ? strlen(hugetlbfs_mnt) : 0;
+
+ if (machine__is_default_guest(machine))
+ return 0;
+
+ snprintf(filename, sizeof(filename), "%s/proc/%d/task/%d/maps",
+ machine->root_dir, pid, pid);
+
+ fp = fopen(filename, "r");
+ if (fp == NULL) {
+ /*
+ * We raced with a task exiting - just return:
+ */
+ pr_debug("couldn't open %s\n", filename);
+ return -1;
+ }
+
+ event->header.type = PERF_RECORD_MMAP2;
+ t = rdclock();
+
+ while (1) {
+ char bf[BUFSIZ];
+ char prot[5];
+ char execname[PATH_MAX];
+ char anonstr[] = "//anon";
+ unsigned int ino;
+ size_t size;
+ ssize_t n;
+
+ if (fgets(bf, sizeof(bf), fp) == NULL)
+ break;
+
+ if ((rdclock() - t) > timeout) {
+ pr_warning("Reading %s time out. "
+ "You may want to increase "
+ "the time limit by --proc-map-timeout\n",
+ filename);
+ truncation = true;
+ goto out;
+ }
+
+ /* ensure null termination since stack will be reused. */
+ strcpy(execname, "");
+
+ /* 00400000-0040c000 r-xp 00000000 fd:01 41038 /bin/cat */
+ n = sscanf(bf, "%"PRI_lx64"-%"PRI_lx64" %s %"PRI_lx64" %x:%x %u %[^\n]\n",
+ &event->mmap2.start, &event->mmap2.len, prot,
+ &event->mmap2.pgoff, &event->mmap2.maj,
+ &event->mmap2.min,
+ &ino, execname);
+
+ /*
+ * Anon maps don't have the execname.
+ */
+ if (n < 7)
+ continue;
+
+ event->mmap2.ino = (u64)ino;
+
+ /*
+ * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c
+ */
+ if (machine__is_host(machine))
+ event->header.misc = PERF_RECORD_MISC_USER;
+ else
+ event->header.misc = PERF_RECORD_MISC_GUEST_USER;
+
+ /* map protection and flags bits */
+ event->mmap2.prot = 0;
+ event->mmap2.flags = 0;
+ if (prot[0] == 'r')
+ event->mmap2.prot |= PROT_READ;
+ if (prot[1] == 'w')
+ event->mmap2.prot |= PROT_WRITE;
+ if (prot[2] == 'x')
+ event->mmap2.prot |= PROT_EXEC;
+
+ if (prot[3] == 's')
+ event->mmap2.flags |= MAP_SHARED;
+ else
+ event->mmap2.flags |= MAP_PRIVATE;
+
+ if (prot[2] != 'x') {
+ if (!mmap_data || prot[0] != 'r')
+ continue;
+
+ event->header.misc |= PERF_RECORD_MISC_MMAP_DATA;
+ }
+
+out:
+ if (truncation)
+ event->header.misc |= PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT;
+
+ if (!strcmp(execname, ""))
+ strcpy(execname, anonstr);
+
+ if (hugetlbfs_mnt_len &&
+ !strncmp(execname, hugetlbfs_mnt, hugetlbfs_mnt_len)) {
+ strcpy(execname, anonstr);
+ event->mmap2.flags |= MAP_HUGETLB;
+ }
+
+ size = strlen(execname) + 1;
+ memcpy(event->mmap2.filename, execname, size);
+ size = PERF_ALIGN(size, sizeof(u64));
+ event->mmap2.len -= event->mmap.start;
+ event->mmap2.header.size = (sizeof(event->mmap2) -
+ (sizeof(event->mmap2.filename) - size));
+ memset(event->mmap2.filename + size, 0, machine->id_hdr_size);
+ event->mmap2.header.size += machine->id_hdr_size;
+ event->mmap2.pid = tgid;
+ event->mmap2.tid = pid;
+
+ if (perf_tool__process_synth_event(tool, event, machine, process) != 0) {
+ rc = -1;
+ break;
+ }
+
+ if (truncation)
+ break;
+ }
+
+ fclose(fp);
+ return rc;
+}
+
+int perf_event__synthesize_modules(struct perf_tool *tool, perf_event__handler_t process,
+ struct machine *machine)
+{
+ int rc = 0;
+ struct map *pos;
+ struct maps *maps = machine__kernel_maps(machine);
+ union perf_event *event = zalloc((sizeof(event->mmap) +
+ machine->id_hdr_size));
+ if (event == NULL) {
+ pr_debug("Not enough memory synthesizing mmap event "
+ "for kernel modules\n");
+ return -1;
+ }
+
+ event->header.type = PERF_RECORD_MMAP;
+
+ /*
+ * kernel uses 0 for user space maps, see kernel/perf_event.c
+ * __perf_event_mmap
+ */
+ if (machine__is_host(machine))
+ event->header.misc = PERF_RECORD_MISC_KERNEL;
+ else
+ event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
+
+ for (pos = maps__first(maps); pos; pos = map__next(pos)) {
+ size_t size;
+
+ if (!__map__is_kmodule(pos))
+ continue;
+
+ size = PERF_ALIGN(pos->dso->long_name_len + 1, sizeof(u64));
+ event->mmap.header.type = PERF_RECORD_MMAP;
+ event->mmap.header.size = (sizeof(event->mmap) -
+ (sizeof(event->mmap.filename) - size));
+ memset(event->mmap.filename + size, 0, machine->id_hdr_size);
+ event->mmap.header.size += machine->id_hdr_size;
+ event->mmap.start = pos->start;
+ event->mmap.len = pos->end - pos->start;
+ event->mmap.pid = machine->pid;
+
+ memcpy(event->mmap.filename, pos->dso->long_name,
+ pos->dso->long_name_len + 1);
+ if (perf_tool__process_synth_event(tool, event, machine, process) != 0) {
+ rc = -1;
+ break;
+ }
+ }
+
+ free(event);
+ return rc;
+}
+
+static int __event__synthesize_thread(union perf_event *comm_event,
+ union perf_event *mmap_event,
+ union perf_event *fork_event,
+ union perf_event *namespaces_event,
+ pid_t pid, int full, perf_event__handler_t process,
+ struct perf_tool *tool, struct machine *machine, bool mmap_data)
+{
+ char filename[PATH_MAX];
+ DIR *tasks;
+ struct dirent *dirent;
+ pid_t tgid, ppid;
+ int rc = 0;
+
+ /* special case: only send one comm event using passed in pid */
+ if (!full) {
+ tgid = perf_event__synthesize_comm(tool, comm_event, pid,
+ process, machine);
+
+ if (tgid == -1)
+ return -1;
+
+ if (perf_event__synthesize_namespaces(tool, namespaces_event, pid,
+ tgid, process, machine) < 0)
+ return -1;
+
+ /*
+ * send mmap only for thread group leader
+ * see thread__init_map_groups
+ */
+ if (pid == tgid &&
+ perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
+ process, machine, mmap_data))
+ return -1;
+
+ return 0;
+ }
+
+ if (machine__is_default_guest(machine))
+ return 0;
+
+ snprintf(filename, sizeof(filename), "%s/proc/%d/task",
+ machine->root_dir, pid);
+
+ tasks = opendir(filename);
+ if (tasks == NULL) {
+ pr_debug("couldn't open %s\n", filename);
+ return 0;
+ }
+
+ while ((dirent = readdir(tasks)) != NULL) {
+ char *end;
+ pid_t _pid;
+
+ _pid = strtol(dirent->d_name, &end, 10);
+ if (*end)
+ continue;
+
+ rc = -1;
+ if (perf_event__prepare_comm(comm_event, _pid, machine,
+ &tgid, &ppid) != 0)
+ break;
+
+ if (perf_event__synthesize_fork(tool, fork_event, _pid, tgid,
+ ppid, process, machine) < 0)
+ break;
+
+ if (perf_event__synthesize_namespaces(tool, namespaces_event, _pid,
+ tgid, process, machine) < 0)
+ break;
+
+ /*
+ * Send the prepared comm event
+ */
+ if (perf_tool__process_synth_event(tool, comm_event, machine, process) != 0)
+ break;
+
+ rc = 0;
+ if (_pid == pid) {
+ /* process the parent's maps too */
+ rc = perf_event__synthesize_mmap_events(tool, mmap_event, pid, tgid,
+ process, machine, mmap_data);
+ if (rc)
+ break;
+ }
+ }
+
+ closedir(tasks);
+ return rc;
+}
+
+int perf_event__synthesize_thread_map(struct perf_tool *tool,
+ struct perf_thread_map *threads,
+ perf_event__handler_t process,
+ struct machine *machine,
+ bool mmap_data)
+{
+ union perf_event *comm_event, *mmap_event, *fork_event;
+ union perf_event *namespaces_event;
+ int err = -1, thread, j;
+
+ comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
+ if (comm_event == NULL)
+ goto out;
+
+ mmap_event = malloc(sizeof(mmap_event->mmap2) + machine->id_hdr_size);
+ if (mmap_event == NULL)
+ goto out_free_comm;
+
+ fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size);
+ if (fork_event == NULL)
+ goto out_free_mmap;
+
+ namespaces_event = malloc(sizeof(namespaces_event->namespaces) +
+ (NR_NAMESPACES * sizeof(struct perf_ns_link_info)) +
+ machine->id_hdr_size);
+ if (namespaces_event == NULL)
+ goto out_free_fork;
+
+ err = 0;
+ for (thread = 0; thread < threads->nr; ++thread) {
+ if (__event__synthesize_thread(comm_event, mmap_event,
+ fork_event, namespaces_event,
+ perf_thread_map__pid(threads, thread), 0,
+ process, tool, machine,
+ mmap_data)) {
+ err = -1;
+ break;
+ }
+
+ /*
+ * comm.pid is set to thread group id by
+ * perf_event__synthesize_comm
+ */
+ if ((int) comm_event->comm.pid != perf_thread_map__pid(threads, thread)) {
+ bool need_leader = true;
+
+ /* is thread group leader in thread_map? */
+ for (j = 0; j < threads->nr; ++j) {
+ if ((int) comm_event->comm.pid == perf_thread_map__pid(threads, j)) {
+ need_leader = false;
+ break;
+ }
+ }
+
+ /* if not, generate events for it */
+ if (need_leader &&
+ __event__synthesize_thread(comm_event, mmap_event,
+ fork_event, namespaces_event,
+ comm_event->comm.pid, 0,
+ process, tool, machine,
+ mmap_data)) {
+ err = -1;
+ break;
+ }
+ }
+ }
+ free(namespaces_event);
+out_free_fork:
+ free(fork_event);
+out_free_mmap:
+ free(mmap_event);
+out_free_comm:
+ free(comm_event);
+out:
+ return err;
+}
+
+static int __perf_event__synthesize_threads(struct perf_tool *tool,
+ perf_event__handler_t process,
+ struct machine *machine,
+ bool mmap_data,
+ struct dirent **dirent,
+ int start,
+ int num)
+{
+ union perf_event *comm_event, *mmap_event, *fork_event;
+ union perf_event *namespaces_event;
+ int err = -1;
+ char *end;
+ pid_t pid;
+ int i;
+
+ comm_event = malloc(sizeof(comm_event->comm) + machine->id_hdr_size);
+ if (comm_event == NULL)
+ goto out;
+
+ mmap_event = malloc(sizeof(mmap_event->mmap2) + machine->id_hdr_size);
+ if (mmap_event == NULL)
+ goto out_free_comm;
+
+ fork_event = malloc(sizeof(fork_event->fork) + machine->id_hdr_size);
+ if (fork_event == NULL)
+ goto out_free_mmap;
+
+ namespaces_event = malloc(sizeof(namespaces_event->namespaces) +
+ (NR_NAMESPACES * sizeof(struct perf_ns_link_info)) +
+ machine->id_hdr_size);
+ if (namespaces_event == NULL)
+ goto out_free_fork;
+
+ for (i = start; i < start + num; i++) {
+ if (!isdigit(dirent[i]->d_name[0]))
+ continue;
+
+ pid = (pid_t)strtol(dirent[i]->d_name, &end, 10);
+ /* only interested in proper numerical dirents */
+ if (*end)
+ continue;
+ /*
+ * We may race with exiting thread, so don't stop just because
+ * one thread couldn't be synthesized.
+ */
+ __event__synthesize_thread(comm_event, mmap_event, fork_event,
+ namespaces_event, pid, 1, process,
+ tool, machine, mmap_data);
+ }
+ err = 0;
+
+ free(namespaces_event);
+out_free_fork:
+ free(fork_event);
+out_free_mmap:
+ free(mmap_event);
+out_free_comm:
+ free(comm_event);
+out:
+ return err;
+}
+
+struct synthesize_threads_arg {
+ struct perf_tool *tool;
+ perf_event__handler_t process;
+ struct machine *machine;
+ bool mmap_data;
+ struct dirent **dirent;
+ int num;
+ int start;
+};
+
+static void *synthesize_threads_worker(void *arg)
+{
+ struct synthesize_threads_arg *args = arg;
+
+ __perf_event__synthesize_threads(args->tool, args->process,
+ args->machine, args->mmap_data,
+ args->dirent,
+ args->start, args->num);
+ return NULL;
+}
+
+int perf_event__synthesize_threads(struct perf_tool *tool,
+ perf_event__handler_t process,
+ struct machine *machine,
+ bool mmap_data,
+ unsigned int nr_threads_synthesize)
+{
+ struct synthesize_threads_arg *args = NULL;
+ pthread_t *synthesize_threads = NULL;
+ char proc_path[PATH_MAX];
+ struct dirent **dirent;
+ int num_per_thread;
+ int m, n, i, j;
+ int thread_nr;
+ int base = 0;
+ int err = -1;
+
+
+ if (machine__is_default_guest(machine))
+ return 0;
+
+ snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir);
+ n = scandir(proc_path, &dirent, 0, alphasort);
+ if (n < 0)
+ return err;
+
+ if (nr_threads_synthesize == UINT_MAX)
+ thread_nr = sysconf(_SC_NPROCESSORS_ONLN);
+ else
+ thread_nr = nr_threads_synthesize;
+
+ if (thread_nr <= 1) {
+ err = __perf_event__synthesize_threads(tool, process,
+ machine, mmap_data,
+ dirent, base, n);
+ goto free_dirent;
+ }
+ if (thread_nr > n)
+ thread_nr = n;
+
+ synthesize_threads = calloc(sizeof(pthread_t), thread_nr);
+ if (synthesize_threads == NULL)
+ goto free_dirent;
+
+ args = calloc(sizeof(*args), thread_nr);
+ if (args == NULL)
+ goto free_threads;
+
+ num_per_thread = n / thread_nr;
+ m = n % thread_nr;
+ for (i = 0; i < thread_nr; i++) {
+ args[i].tool = tool;
+ args[i].process = process;
+ args[i].machine = machine;
+ args[i].mmap_data = mmap_data;
+ args[i].dirent = dirent;
+ }
+ for (i = 0; i < m; i++) {
+ args[i].num = num_per_thread + 1;
+ args[i].start = i * args[i].num;
+ }
+ if (i != 0)
+ base = args[i-1].start + args[i-1].num;
+ for (j = i; j < thread_nr; j++) {
+ args[j].num = num_per_thread;
+ args[j].start = base + (j - i) * args[i].num;
+ }
+
+ for (i = 0; i < thread_nr; i++) {
+ if (pthread_create(&synthesize_threads[i], NULL,
+ synthesize_threads_worker, &args[i]))
+ goto out_join;
+ }
+ err = 0;
+out_join:
+ for (i = 0; i < thread_nr; i++)
+ pthread_join(synthesize_threads[i], NULL);
+ free(args);
+free_threads:
+ free(synthesize_threads);
+free_dirent:
+ for (i = 0; i < n; i++)
+ zfree(&dirent[i]);
+ free(dirent);
+
+ return err;
+}
+
+int __weak perf_event__synthesize_extra_kmaps(struct perf_tool *tool __maybe_unused,
+ perf_event__handler_t process __maybe_unused,
+ struct machine *machine __maybe_unused)
+{
+ return 0;
+}
+
+static int __perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
+ perf_event__handler_t process,
+ struct machine *machine)
+{
+ size_t size;
+ struct map *map = machine__kernel_map(machine);
+ struct kmap *kmap;
+ int err;
+ union perf_event *event;
+
+ if (map == NULL)
+ return -1;
+
+ kmap = map__kmap(map);
+ if (!kmap->ref_reloc_sym)
+ return -1;
+
+ /*
+ * We should get this from /sys/kernel/sections/.text, but till that is
+ * available use this, and after it is use this as a fallback for older
+ * kernels.
+ */
+ event = zalloc((sizeof(event->mmap) + machine->id_hdr_size));
+ if (event == NULL) {
+ pr_debug("Not enough memory synthesizing mmap event "
+ "for kernel modules\n");
+ return -1;
+ }
+
+ if (machine__is_host(machine)) {
+ /*
+ * kernel uses PERF_RECORD_MISC_USER for user space maps,
+ * see kernel/perf_event.c __perf_event_mmap
+ */
+ event->header.misc = PERF_RECORD_MISC_KERNEL;
+ } else {
+ event->header.misc = PERF_RECORD_MISC_GUEST_KERNEL;
+ }
+
+ size = snprintf(event->mmap.filename, sizeof(event->mmap.filename),
+ "%s%s", machine->mmap_name, kmap->ref_reloc_sym->name) + 1;
+ size = PERF_ALIGN(size, sizeof(u64));
+ event->mmap.header.type = PERF_RECORD_MMAP;
+ event->mmap.header.size = (sizeof(event->mmap) -
+ (sizeof(event->mmap.filename) - size) + machine->id_hdr_size);
+ event->mmap.pgoff = kmap->ref_reloc_sym->addr;
+ event->mmap.start = map->start;
+ event->mmap.len = map->end - event->mmap.start;
+ event->mmap.pid = machine->pid;
+
+ err = perf_tool__process_synth_event(tool, event, machine, process);
+ free(event);
+
+ return err;
+}
+
+int perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
+ perf_event__handler_t process,
+ struct machine *machine)
+{
+ int err;
+
+ err = __perf_event__synthesize_kernel_mmap(tool, process, machine);
+ if (err < 0)
+ return err;
+
+ return perf_event__synthesize_extra_kmaps(tool, process, machine);
+}
+
+int perf_event__synthesize_thread_map2(struct perf_tool *tool,
+ struct perf_thread_map *threads,
+ perf_event__handler_t process,
+ struct machine *machine)
+{
+ union perf_event *event;
+ int i, err, size;
+
+ size = sizeof(event->thread_map);
+ size += threads->nr * sizeof(event->thread_map.entries[0]);
+
+ event = zalloc(size);
+ if (!event)
+ return -ENOMEM;
+
+ event->header.type = PERF_RECORD_THREAD_MAP;
+ event->header.size = size;
+ event->thread_map.nr = threads->nr;
+
+ for (i = 0; i < threads->nr; i++) {
+ struct perf_record_thread_map_entry *entry = &event->thread_map.entries[i];
+ char *comm = perf_thread_map__comm(threads, i);
+
+ if (!comm)
+ comm = (char *) "";
+
+ entry->pid = perf_thread_map__pid(threads, i);
+ strncpy((char *) &entry->comm, comm, sizeof(entry->comm));
+ }
+
+ err = process(tool, event, NULL, machine);
+
+ free(event);
+ return err;
+}
+
+static void synthesize_cpus(struct cpu_map_entries *cpus,
+ struct perf_cpu_map *map)
+{
+ int i;
+
+ cpus->nr = map->nr;
+
+ for (i = 0; i < map->nr; i++)
+ cpus->cpu[i] = map->map[i];
+}
+
+static void synthesize_mask(struct perf_record_record_cpu_map *mask,
+ struct perf_cpu_map *map, int max)
+{
+ int i;
+
+ mask->nr = BITS_TO_LONGS(max);
+ mask->long_size = sizeof(long);
+
+ for (i = 0; i < map->nr; i++)
+ set_bit(map->map[i], mask->mask);
+}
+
+static size_t cpus_size(struct perf_cpu_map *map)
+{
+ return sizeof(struct cpu_map_entries) + map->nr * sizeof(u16);
+}
+
+static size_t mask_size(struct perf_cpu_map *map, int *max)
+{
+ int i;
+
+ *max = 0;
+
+ for (i = 0; i < map->nr; i++) {
+ /* bit possition of the cpu is + 1 */
+ int bit = map->map[i] + 1;
+
+ if (bit > *max)
+ *max = bit;
+ }
+
+ return sizeof(struct perf_record_record_cpu_map) + BITS_TO_LONGS(*max) * sizeof(long);
+}
+
+void *cpu_map_data__alloc(struct perf_cpu_map *map, size_t *size, u16 *type, int *max)
+{
+ size_t size_cpus, size_mask;
+ bool is_dummy = perf_cpu_map__empty(map);
+
+ /*
+ * Both array and mask data have variable size based
+ * on the number of cpus and their actual values.
+ * The size of the 'struct perf_record_cpu_map_data' is:
+ *
+ * array = size of 'struct cpu_map_entries' +
+ * number of cpus * sizeof(u64)
+ *
+ * mask = size of 'struct perf_record_record_cpu_map' +
+ * maximum cpu bit converted to size of longs
+ *
+ * and finaly + the size of 'struct perf_record_cpu_map_data'.
+ */
+ size_cpus = cpus_size(map);
+ size_mask = mask_size(map, max);
+
+ if (is_dummy || (size_cpus < size_mask)) {
+ *size += size_cpus;
+ *type = PERF_CPU_MAP__CPUS;
+ } else {
+ *size += size_mask;
+ *type = PERF_CPU_MAP__MASK;
+ }
+
+ *size += sizeof(struct perf_record_cpu_map_data);
+ *size = PERF_ALIGN(*size, sizeof(u64));
+ return zalloc(*size);
+}
+
+void cpu_map_data__synthesize(struct perf_record_cpu_map_data *data, struct perf_cpu_map *map,
+ u16 type, int max)
+{
+ data->type = type;
+
+ switch (type) {
+ case PERF_CPU_MAP__CPUS:
+ synthesize_cpus((struct cpu_map_entries *) data->data, map);
+ break;
+ case PERF_CPU_MAP__MASK:
+ synthesize_mask((struct perf_record_record_cpu_map *)data->data, map, max);
+ default:
+ break;
+ };
+}
+
+static struct perf_record_cpu_map *cpu_map_event__new(struct perf_cpu_map *map)
+{
+ size_t size = sizeof(struct perf_record_cpu_map);
+ struct perf_record_cpu_map *event;
+ int max;
+ u16 type;
+
+ event = cpu_map_data__alloc(map, &size, &type, &max);
+ if (!event)
+ return NULL;
+
+ event->header.type = PERF_RECORD_CPU_MAP;
+ event->header.size = size;
+ event->data.type = type;
+
+ cpu_map_data__synthesize(&event->data, map, type, max);
+ return event;
+}
+
+int perf_event__synthesize_cpu_map(struct perf_tool *tool,
+ struct perf_cpu_map *map,
+ perf_event__handler_t process,
+ struct machine *machine)
+{
+ struct perf_record_cpu_map *event;
+ int err;
+
+ event = cpu_map_event__new(map);
+ if (!event)
+ return -ENOMEM;
+
+ err = process(tool, (union perf_event *) event, NULL, machine);
+
+ free(event);
+ return err;
+}
+
+int perf_event__synthesize_stat_config(struct perf_tool *tool,
+ struct perf_stat_config *config,
+ perf_event__handler_t process,
+ struct machine *machine)
+{
+ struct perf_record_stat_config *event;
+ int size, i = 0, err;
+
+ size = sizeof(*event);
+ size += (PERF_STAT_CONFIG_TERM__MAX * sizeof(event->data[0]));
+
+ event = zalloc(size);
+ if (!event)
+ return -ENOMEM;
+
+ event->header.type = PERF_RECORD_STAT_CONFIG;
+ event->header.size = size;
+ event->nr = PERF_STAT_CONFIG_TERM__MAX;
+
+#define ADD(__term, __val) \
+ event->data[i].tag = PERF_STAT_CONFIG_TERM__##__term; \
+ event->data[i].val = __val; \
+ i++;
+
+ ADD(AGGR_MODE, config->aggr_mode)
+ ADD(INTERVAL, config->interval)
+ ADD(SCALE, config->scale)
+
+ WARN_ONCE(i != PERF_STAT_CONFIG_TERM__MAX,
+ "stat config terms unbalanced\n");
+#undef ADD
+
+ err = process(tool, (union perf_event *) event, NULL, machine);
+
+ free(event);
+ return err;
+}
+
+int perf_event__synthesize_stat(struct perf_tool *tool,
+ u32 cpu, u32 thread, u64 id,
+ struct perf_counts_values *count,
+ perf_event__handler_t process,
+ struct machine *machine)
+{
+ struct perf_record_stat event;
+
+ event.header.type = PERF_RECORD_STAT;
+ event.header.size = sizeof(event);
+ event.header.misc = 0;
+
+ event.id = id;
+ event.cpu = cpu;
+ event.thread = thread;
+ event.val = count->val;
+ event.ena = count->ena;
+ event.run = count->run;
+
+ return process(tool, (union perf_event *) &event, NULL, machine);
+}
+
+int perf_event__synthesize_stat_round(struct perf_tool *tool,
+ u64 evtime, u64 type,
+ perf_event__handler_t process,
+ struct machine *machine)
+{
+ struct perf_record_stat_round event;
+
+ event.header.type = PERF_RECORD_STAT_ROUND;
+ event.header.size = sizeof(event);
+ event.header.misc = 0;
+
+ event.time = evtime;
+ event.type = type;
+
+ return process(tool, (union perf_event *) &event, NULL, machine);
+}
+
+size_t perf_event__sample_event_size(const struct perf_sample *sample, u64 type, u64 read_format)
+{
+ size_t sz, result = sizeof(struct perf_record_sample);
+
+ if (type & PERF_SAMPLE_IDENTIFIER)
+ result += sizeof(u64);
+
+ if (type & PERF_SAMPLE_IP)
+ result += sizeof(u64);
+
+ if (type & PERF_SAMPLE_TID)
+ result += sizeof(u64);
+
+ if (type & PERF_SAMPLE_TIME)
+ result += sizeof(u64);
+
+ if (type & PERF_SAMPLE_ADDR)
+ result += sizeof(u64);
+
+ if (type & PERF_SAMPLE_ID)
+ result += sizeof(u64);
+
+ if (type & PERF_SAMPLE_STREAM_ID)
+ result += sizeof(u64);
+
+ if (type & PERF_SAMPLE_CPU)
+ result += sizeof(u64);
+
+ if (type & PERF_SAMPLE_PERIOD)
+ result += sizeof(u64);
+
+ if (type & PERF_SAMPLE_READ) {
+ result += sizeof(u64);
+ if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
+ result += sizeof(u64);
+ if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
+ result += sizeof(u64);
+ /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */
+ if (read_format & PERF_FORMAT_GROUP) {
+ sz = sample->read.group.nr *
+ sizeof(struct sample_read_value);
+ result += sz;
+ } else {
+ result += sizeof(u64);
+ }
+ }
+
+ if (type & PERF_SAMPLE_CALLCHAIN) {
+ sz = (sample->callchain->nr + 1) * sizeof(u64);
+ result += sz;
+ }
+
+ if (type & PERF_SAMPLE_RAW) {
+ result += sizeof(u32);
+ result += sample->raw_size;
+ }
+
+ if (type & PERF_SAMPLE_BRANCH_STACK) {
+ sz = sample->branch_stack->nr * sizeof(struct branch_entry);
+ sz += sizeof(u64);
+ result += sz;
+ }
+
+ if (type & PERF_SAMPLE_REGS_USER) {
+ if (sample->user_regs.abi) {
+ result += sizeof(u64);
+ sz = hweight64(sample->user_regs.mask) * sizeof(u64);
+ result += sz;
+ } else {
+ result += sizeof(u64);
+ }
+ }
+
+ if (type & PERF_SAMPLE_STACK_USER) {
+ sz = sample->user_stack.size;
+ result += sizeof(u64);
+ if (sz) {
+ result += sz;
+ result += sizeof(u64);
+ }
+ }
+
+ if (type & PERF_SAMPLE_WEIGHT)
+ result += sizeof(u64);
+
+ if (type & PERF_SAMPLE_DATA_SRC)
+ result += sizeof(u64);
+
+ if (type & PERF_SAMPLE_TRANSACTION)
+ result += sizeof(u64);
+
+ if (type & PERF_SAMPLE_REGS_INTR) {
+ if (sample->intr_regs.abi) {
+ result += sizeof(u64);
+ sz = hweight64(sample->intr_regs.mask) * sizeof(u64);
+ result += sz;
+ } else {
+ result += sizeof(u64);
+ }
+ }
+
+ if (type & PERF_SAMPLE_PHYS_ADDR)
+ result += sizeof(u64);
+
+ return result;
+}
+
+int perf_event__synthesize_sample(union perf_event *event, u64 type, u64 read_format,
+ const struct perf_sample *sample)
+{
+ __u64 *array;
+ size_t sz;
+ /*
+ * used for cross-endian analysis. See git commit 65014ab3
+ * for why this goofiness is needed.
+ */
+ union u64_swap u;
+
+ array = event->sample.array;
+
+ if (type & PERF_SAMPLE_IDENTIFIER) {
+ *array = sample->id;
+ array++;
+ }
+
+ if (type & PERF_SAMPLE_IP) {
+ *array = sample->ip;
+ array++;
+ }
+
+ if (type & PERF_SAMPLE_TID) {
+ u.val32[0] = sample->pid;
+ u.val32[1] = sample->tid;
+ *array = u.val64;
+ array++;
+ }
+
+ if (type & PERF_SAMPLE_TIME) {
+ *array = sample->time;
+ array++;
+ }
+
+ if (type & PERF_SAMPLE_ADDR) {
+ *array = sample->addr;
+ array++;
+ }
+
+ if (type & PERF_SAMPLE_ID) {
+ *array = sample->id;
+ array++;
+ }
+
+ if (type & PERF_SAMPLE_STREAM_ID) {
+ *array = sample->stream_id;
+ array++;
+ }
+
+ if (type & PERF_SAMPLE_CPU) {
+ u.val32[0] = sample->cpu;
+ u.val32[1] = 0;
+ *array = u.val64;
+ array++;
+ }
+
+ if (type & PERF_SAMPLE_PERIOD) {
+ *array = sample->period;
+ array++;
+ }
+
+ if (type & PERF_SAMPLE_READ) {
+ if (read_format & PERF_FORMAT_GROUP)
+ *array = sample->read.group.nr;
+ else
+ *array = sample->read.one.value;
+ array++;
+
+ if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
+ *array = sample->read.time_enabled;
+ array++;
+ }
+
+ if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
+ *array = sample->read.time_running;
+ array++;
+ }
+
+ /* PERF_FORMAT_ID is forced for PERF_SAMPLE_READ */
+ if (read_format & PERF_FORMAT_GROUP) {
+ sz = sample->read.group.nr *
+ sizeof(struct sample_read_value);
+ memcpy(array, sample->read.group.values, sz);
+ array = (void *)array + sz;
+ } else {
+ *array = sample->read.one.id;
+ array++;
+ }
+ }
+
+ if (type & PERF_SAMPLE_CALLCHAIN) {
+ sz = (sample->callchain->nr + 1) * sizeof(u64);
+ memcpy(array, sample->callchain, sz);
+ array = (void *)array + sz;
+ }
+
+ if (type & PERF_SAMPLE_RAW) {
+ u.val32[0] = sample->raw_size;
+ *array = u.val64;
+ array = (void *)array + sizeof(u32);
+
+ memcpy(array, sample->raw_data, sample->raw_size);
+ array = (void *)array + sample->raw_size;
+ }
+
+ if (type & PERF_SAMPLE_BRANCH_STACK) {
+ sz = sample->branch_stack->nr * sizeof(struct branch_entry);
+ sz += sizeof(u64);
+ memcpy(array, sample->branch_stack, sz);
+ array = (void *)array + sz;
+ }
+
+ if (type & PERF_SAMPLE_REGS_USER) {
+ if (sample->user_regs.abi) {
+ *array++ = sample->user_regs.abi;
+ sz = hweight64(sample->user_regs.mask) * sizeof(u64);
+ memcpy(array, sample->user_regs.regs, sz);
+ array = (void *)array + sz;
+ } else {
+ *array++ = 0;
+ }
+ }
+
+ if (type & PERF_SAMPLE_STACK_USER) {
+ sz = sample->user_stack.size;
+ *array++ = sz;
+ if (sz) {
+ memcpy(array, sample->user_stack.data, sz);
+ array = (void *)array + sz;
+ *array++ = sz;
+ }
+ }
+
+ if (type & PERF_SAMPLE_WEIGHT) {
+ *array = sample->weight;
+ array++;
+ }
+
+ if (type & PERF_SAMPLE_DATA_SRC) {
+ *array = sample->data_src;
+ array++;
+ }
+
+ if (type & PERF_SAMPLE_TRANSACTION) {
+ *array = sample->transaction;
+ array++;
+ }
+
+ if (type & PERF_SAMPLE_REGS_INTR) {
+ if (sample->intr_regs.abi) {
+ *array++ = sample->intr_regs.abi;
+ sz = hweight64(sample->intr_regs.mask) * sizeof(u64);
+ memcpy(array, sample->intr_regs.regs, sz);
+ array = (void *)array + sz;
+ } else {
+ *array++ = 0;
+ }
+ }
+
+ if (type & PERF_SAMPLE_PHYS_ADDR) {
+ *array = sample->phys_addr;
+ array++;
+ }
+
+ return 0;
+}
+
+int perf_event__synthesize_id_index(struct perf_tool *tool, perf_event__handler_t process,
+ struct evlist *evlist, struct machine *machine)
+{
+ union perf_event *ev;
+ struct evsel *evsel;
+ size_t nr = 0, i = 0, sz, max_nr, n;
+ int err;
+
+ pr_debug2("Synthesizing id index\n");
+
+ max_nr = (UINT16_MAX - sizeof(struct perf_record_id_index)) /
+ sizeof(struct id_index_entry);
+
+ evlist__for_each_entry(evlist, evsel)
+ nr += evsel->ids;
+
+ n = nr > max_nr ? max_nr : nr;
+ sz = sizeof(struct perf_record_id_index) + n * sizeof(struct id_index_entry);
+ ev = zalloc(sz);
+ if (!ev)
+ return -ENOMEM;
+
+ ev->id_index.header.type = PERF_RECORD_ID_INDEX;
+ ev->id_index.header.size = sz;
+ ev->id_index.nr = n;
+
+ evlist__for_each_entry(evlist, evsel) {
+ u32 j;
+
+ for (j = 0; j < evsel->ids; j++) {
+ struct id_index_entry *e;
+ struct perf_sample_id *sid;
+
+ if (i >= n) {
+ err = process(tool, ev, NULL, machine);
+ if (err)
+ goto out_err;
+ nr -= n;
+ i = 0;
+ }
+
+ e = &ev->id_index.entries[i++];
+
+ e->id = evsel->id[j];
+
+ sid = perf_evlist__id2sid(evlist, e->id);
+ if (!sid) {
+ free(ev);
+ return -ENOENT;
+ }
+
+ e->idx = sid->idx;
+ e->cpu = sid->cpu;
+ e->tid = sid->tid;
+ }
+ }
+
+ sz = sizeof(struct perf_record_id_index) + nr * sizeof(struct id_index_entry);
+ ev->id_index.header.size = sz;
+ ev->id_index.nr = nr;
+
+ err = process(tool, ev, NULL, machine);
+out_err:
+ free(ev);
+
+ return err;
+}
+
+int __machine__synthesize_threads(struct machine *machine, struct perf_tool *tool,
+ struct target *target, struct perf_thread_map *threads,
+ perf_event__handler_t process, bool data_mmap,
+ unsigned int nr_threads_synthesize)
+{
+ if (target__has_task(target))
+ return perf_event__synthesize_thread_map(tool, threads, process, machine, data_mmap);
+ else if (target__has_cpu(target))
+ return perf_event__synthesize_threads(tool, process,
+ machine, data_mmap,
+ nr_threads_synthesize);
+ /* command specified */
+ return 0;
+}
+
+int machine__synthesize_threads(struct machine *machine, struct target *target,
+ struct perf_thread_map *threads, bool data_mmap,
+ unsigned int nr_threads_synthesize)
+{
+ return __machine__synthesize_threads(machine, NULL, target, threads,
+ perf_event__process, data_mmap,
+ nr_threads_synthesize);
+}
+
+static struct perf_record_event_update *event_update_event__new(size_t size, u64 type, u64 id)
+{
+ struct perf_record_event_update *ev;
+
+ size += sizeof(*ev);
+ size = PERF_ALIGN(size, sizeof(u64));
+
+ ev = zalloc(size);
+ if (ev) {
+ ev->header.type = PERF_RECORD_EVENT_UPDATE;
+ ev->header.size = (u16)size;
+ ev->type = type;
+ ev->id = id;
+ }
+ return ev;
+}
+
+int perf_event__synthesize_event_update_unit(struct perf_tool *tool, struct evsel *evsel,
+ perf_event__handler_t process)
+{
+ size_t size = strlen(evsel->unit);
+ struct perf_record_event_update *ev;
+ int err;
+
+ ev = event_update_event__new(size + 1, PERF_EVENT_UPDATE__UNIT, evsel->id[0]);
+ if (ev == NULL)
+ return -ENOMEM;
+
+ strlcpy(ev->data, evsel->unit, size + 1);
+ err = process(tool, (union perf_event *)ev, NULL, NULL);
+ free(ev);
+ return err;
+}
+
+int perf_event__synthesize_event_update_scale(struct perf_tool *tool, struct evsel *evsel,
+ perf_event__handler_t process)
+{
+ struct perf_record_event_update *ev;
+ struct perf_record_event_update_scale *ev_data;
+ int err;
+
+ ev = event_update_event__new(sizeof(*ev_data), PERF_EVENT_UPDATE__SCALE, evsel->id[0]);
+ if (ev == NULL)
+ return -ENOMEM;
+
+ ev_data = (struct perf_record_event_update_scale *)ev->data;
+ ev_data->scale = evsel->scale;
+ err = process(tool, (union perf_event *)ev, NULL, NULL);
+ free(ev);
+ return err;
+}
+
+int perf_event__synthesize_event_update_name(struct perf_tool *tool, struct evsel *evsel,
+ perf_event__handler_t process)
+{
+ struct perf_record_event_update *ev;
+ size_t len = strlen(evsel->name);
+ int err;
+
+ ev = event_update_event__new(len + 1, PERF_EVENT_UPDATE__NAME, evsel->id[0]);
+ if (ev == NULL)
+ return -ENOMEM;
+
+ strlcpy(ev->data, evsel->name, len + 1);
+ err = process(tool, (union perf_event *)ev, NULL, NULL);
+ free(ev);
+ return err;
+}
+
+int perf_event__synthesize_event_update_cpus(struct perf_tool *tool, struct evsel *evsel,
+ perf_event__handler_t process)
+{
+ size_t size = sizeof(struct perf_record_event_update);
+ struct perf_record_event_update *ev;
+ int max, err;
+ u16 type;
+
+ if (!evsel->core.own_cpus)
+ return 0;
+
+ ev = cpu_map_data__alloc(evsel->core.own_cpus, &size, &type, &max);
+ if (!ev)
+ return -ENOMEM;
+
+ ev->header.type = PERF_RECORD_EVENT_UPDATE;
+ ev->header.size = (u16)size;
+ ev->type = PERF_EVENT_UPDATE__CPUS;
+ ev->id = evsel->id[0];
+
+ cpu_map_data__synthesize((struct perf_record_cpu_map_data *)ev->data,
+ evsel->core.own_cpus, type, max);
+
+ err = process(tool, (union perf_event *)ev, NULL, NULL);
+ free(ev);
+ return err;
+}
+
+int perf_event__synthesize_attrs(struct perf_tool *tool, struct evlist *evlist,
+ perf_event__handler_t process)
+{
+ struct evsel *evsel;
+ int err = 0;
+
+ evlist__for_each_entry(evlist, evsel) {
+ err = perf_event__synthesize_attr(tool, &evsel->core.attr, evsel->ids,
+ evsel->id, process);
+ if (err) {
+ pr_debug("failed to create perf header attribute\n");
+ return err;
+ }
+ }
+
+ return err;
+}
+
+static bool has_unit(struct evsel *evsel)
+{
+ return evsel->unit && *evsel->unit;
+}
+
+static bool has_scale(struct evsel *evsel)
+{
+ return evsel->scale != 1;
+}
+
+int perf_event__synthesize_extra_attr(struct perf_tool *tool, struct evlist *evsel_list,
+ perf_event__handler_t process, bool is_pipe)
+{
+ struct evsel *evsel;
+ int err;
+
+ /*
+ * Synthesize other events stuff not carried within
+ * attr event - unit, scale, name
+ */
+ evlist__for_each_entry(evsel_list, evsel) {
+ if (!evsel->supported)
+ continue;
+
+ /*
+ * Synthesize unit and scale only if it's defined.
+ */
+ if (has_unit(evsel)) {
+ err = perf_event__synthesize_event_update_unit(tool, evsel, process);
+ if (err < 0) {
+ pr_err("Couldn't synthesize evsel unit.\n");
+ return err;
+ }
+ }
+
+ if (has_scale(evsel)) {
+ err = perf_event__synthesize_event_update_scale(tool, evsel, process);
+ if (err < 0) {
+ pr_err("Couldn't synthesize evsel evsel.\n");
+ return err;
+ }
+ }
+
+ if (evsel->core.own_cpus) {
+ err = perf_event__synthesize_event_update_cpus(tool, evsel, process);
+ if (err < 0) {
+ pr_err("Couldn't synthesize evsel cpus.\n");
+ return err;
+ }
+ }
+
+ /*
+ * Name is needed only for pipe output,
+ * perf.data carries event names.
+ */
+ if (is_pipe) {
+ err = perf_event__synthesize_event_update_name(tool, evsel, process);
+ if (err < 0) {
+ pr_err("Couldn't synthesize evsel name.\n");
+ return err;
+ }
+ }
+ }
+ return 0;
+}
+
+int perf_event__synthesize_attr(struct perf_tool *tool, struct perf_event_attr *attr,
+ u32 ids, u64 *id, perf_event__handler_t process)
+{
+ union perf_event *ev;
+ size_t size;
+ int err;
+
+ size = sizeof(struct perf_event_attr);
+ size = PERF_ALIGN(size, sizeof(u64));
+ size += sizeof(struct perf_event_header);
+ size += ids * sizeof(u64);
+
+ ev = zalloc(size);
+
+ if (ev == NULL)
+ return -ENOMEM;
+
+ ev->attr.attr = *attr;
+ memcpy(ev->attr.id, id, ids * sizeof(u64));
+
+ ev->attr.header.type = PERF_RECORD_HEADER_ATTR;
+ ev->attr.header.size = (u16)size;
+
+ if (ev->attr.header.size == size)
+ err = process(tool, ev, NULL, NULL);
+ else
+ err = -E2BIG;
+
+ free(ev);
+
+ return err;
+}
+
+int perf_event__synthesize_tracing_data(struct perf_tool *tool, int fd, struct evlist *evlist,
+ perf_event__handler_t process)
+{
+ union perf_event ev;
+ struct tracing_data *tdata;
+ ssize_t size = 0, aligned_size = 0, padding;
+ struct feat_fd ff;
+
+ /*
+ * We are going to store the size of the data followed
+ * by the data contents. Since the fd descriptor is a pipe,
+ * we cannot seek back to store the size of the data once
+ * we know it. Instead we:
+ *
+ * - write the tracing data to the temp file
+ * - get/write the data size to pipe
+ * - write the tracing data from the temp file
+ * to the pipe
+ */
+ tdata = tracing_data_get(&evlist->core.entries, fd, true);
+ if (!tdata)
+ return -1;
+
+ memset(&ev, 0, sizeof(ev));
+
+ ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA;
+ size = tdata->size;
+ aligned_size = PERF_ALIGN(size, sizeof(u64));
+ padding = aligned_size - size;
+ ev.tracing_data.header.size = sizeof(ev.tracing_data);
+ ev.tracing_data.size = aligned_size;
+
+ process(tool, &ev, NULL, NULL);
+
+ /*
+ * The put function will copy all the tracing data
+ * stored in temp file to the pipe.
+ */
+ tracing_data_put(tdata);
+
+ ff = (struct feat_fd){ .fd = fd };
+ if (write_padded(&ff, NULL, 0, padding))
+ return -1;
+
+ return aligned_size;
+}
+
+int perf_event__synthesize_build_id(struct perf_tool *tool, struct dso *pos, u16 misc,
+ perf_event__handler_t process, struct machine *machine)
+{
+ union perf_event ev;
+ size_t len;
+
+ if (!pos->hit)
+ return 0;
+
+ memset(&ev, 0, sizeof(ev));
+
+ len = pos->long_name_len + 1;
+ len = PERF_ALIGN(len, NAME_ALIGN);
+ memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id));
+ ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID;
+ ev.build_id.header.misc = misc;
+ ev.build_id.pid = machine->pid;
+ ev.build_id.header.size = sizeof(ev.build_id) + len;
+ memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len);
+
+ return process(tool, &ev, NULL, machine);
+}
+
+int perf_event__synthesize_stat_events(struct perf_stat_config *config, struct perf_tool *tool,
+ struct evlist *evlist, perf_event__handler_t process, bool attrs)
+{
+ int err;
+
+ if (attrs) {
+ err = perf_event__synthesize_attrs(tool, evlist, process);
+ if (err < 0) {
+ pr_err("Couldn't synthesize attrs.\n");
+ return err;
+ }
+ }
+
+ err = perf_event__synthesize_extra_attr(tool, evlist, process, attrs);
+ err = perf_event__synthesize_thread_map2(tool, evlist->core.threads, process, NULL);
+ if (err < 0) {
+ pr_err("Couldn't synthesize thread map.\n");
+ return err;
+ }
+
+ err = perf_event__synthesize_cpu_map(tool, evlist->core.cpus, process, NULL);
+ if (err < 0) {
+ pr_err("Couldn't synthesize thread map.\n");
+ return err;
+ }
+
+ err = perf_event__synthesize_stat_config(tool, config, process, NULL);
+ if (err < 0) {
+ pr_err("Couldn't synthesize config.\n");
+ return err;
+ }
+
+ return 0;
+}
+
+int __weak perf_event__synth_time_conv(const struct perf_event_mmap_page *pc __maybe_unused,
+ struct perf_tool *tool __maybe_unused,
+ perf_event__handler_t process __maybe_unused,
+ struct machine *machine __maybe_unused)
+{
+ return 0;
+}
+
+extern const struct perf_header_feature_ops feat_ops[HEADER_LAST_FEATURE];
+
+int perf_event__synthesize_features(struct perf_tool *tool, struct perf_session *session,
+ struct evlist *evlist, perf_event__handler_t process)
+{
+ struct perf_header *header = &session->header;
+ struct perf_record_header_feature *fe;
+ struct feat_fd ff;
+ size_t sz, sz_hdr;
+ int feat, ret;
+
+ sz_hdr = sizeof(fe->header);
+ sz = sizeof(union perf_event);
+ /* get a nice alignment */
+ sz = PERF_ALIGN(sz, page_size);
+
+ memset(&ff, 0, sizeof(ff));
+
+ ff.buf = malloc(sz);
+ if (!ff.buf)
+ return -ENOMEM;
+
+ ff.size = sz - sz_hdr;
+ ff.ph = &session->header;
+
+ for_each_set_bit(feat, header->adds_features, HEADER_FEAT_BITS) {
+ if (!feat_ops[feat].synthesize) {
+ pr_debug("No record header feature for header :%d\n", feat);
+ continue;
+ }
+
+ ff.offset = sizeof(*fe);
+
+ ret = feat_ops[feat].write(&ff, evlist);
+ if (ret || ff.offset <= (ssize_t)sizeof(*fe)) {
+ pr_debug("Error writing feature\n");
+ continue;
+ }
+ /* ff.buf may have changed due to realloc in do_write() */
+ fe = ff.buf;
+ memset(fe, 0, sizeof(*fe));
+
+ fe->feat_id = feat;
+ fe->header.type = PERF_RECORD_HEADER_FEATURE;
+ fe->header.size = ff.offset;
+
+ ret = process(tool, ff.buf, NULL, NULL);
+ if (ret) {
+ free(ff.buf);
+ return ret;
+ }
+ }
+
+ /* Send HEADER_LAST_FEATURE mark. */
+ fe = ff.buf;
+ fe->feat_id = HEADER_LAST_FEATURE;
+ fe->header.type = PERF_RECORD_HEADER_FEATURE;
+ fe->header.size = sizeof(*fe);
+
+ ret = process(tool, ff.buf, NULL, NULL);
+
+ free(ff.buf);
+ return ret;
+}
projects / users / jedix / linux-maple.git / commitdiff