# SPDX-License-Identifier: GPL-2.0-only
-huge_count_read_write
-debugfs_target_ids_read_before_terminate_race
-debugfs_target_ids_pid_leak
access_memory
access_memory_even
# SPDX-License-Identifier: GPL-2.0
# Makefile for damon selftests
-TEST_GEN_FILES += huge_count_read_write
-TEST_GEN_FILES += debugfs_target_ids_read_before_terminate_race
-TEST_GEN_FILES += debugfs_target_ids_pid_leak
TEST_GEN_FILES += access_memory access_memory_even
-TEST_FILES = _chk_dependency.sh _debugfs_common.sh _damon_sysfs.py
+TEST_FILES = _chk_dependency.sh _damon_sysfs.py
# functionality tests
-TEST_PROGS = debugfs_attrs.sh debugfs_schemes.sh debugfs_target_ids.sh
TEST_PROGS += sysfs.sh
TEST_PROGS += sysfs_update_schemes_tried_regions_wss_estimation.py
TEST_PROGS += damos_quota.py damos_quota_goal.py damos_apply_interval.py
TEST_PROGS += reclaim.sh lru_sort.sh
# regression tests (reproducers of previously found bugs)
-TEST_PROGS += debugfs_empty_targets.sh debugfs_huge_count_read_write.sh
-TEST_PROGS += debugfs_duplicate_context_creation.sh
-TEST_PROGS += debugfs_rm_non_contexts.sh
-TEST_PROGS += debugfs_target_ids_read_before_terminate_race.sh
-TEST_PROGS += debugfs_target_ids_pid_leak.sh
TEST_PROGS += sysfs_update_removed_scheme_dir.sh
TEST_PROGS += sysfs_update_schemes_tried_regions_hang.py
+++ /dev/null
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0
-
-source _debugfs_common.sh
-
-# Test attrs file
-# ===============
-
-file="$DBGFS/attrs"
-orig_content=$(cat "$file")
-
-test_write_succ "$file" "1 2 3 4 5" "$orig_content" "valid input"
-test_write_fail "$file" "1 2 3 4" "$orig_content" "no enough fields"
-test_write_fail "$file" "1 2 3 5 4" "$orig_content" \
- "min_nr_regions > max_nr_regions"
-test_content "$file" "$orig_content" "1 2 3 4 5" "successfully written"
-echo "$orig_content" > "$file"
+++ /dev/null
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0
-
-source _debugfs_common.sh
-
-# Test duplicated context creation
-# ================================
-
-if ! echo foo > "$DBGFS/mk_contexts"
-then
- echo "context creation failed"
- exit 1
-fi
-
-if echo foo > "$DBGFS/mk_contexts" 2> /dev/null
-then
- echo "duplicate context creation success"
- exit 1
-fi
-
-if ! echo foo > "$DBGFS/rm_contexts"
-then
- echo "context deletion failed"
- exit 1
-fi
-
-exit 0
+++ /dev/null
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0
-
-source _debugfs_common.sh
-
-# Test empty targets case
-# =======================
-
-orig_target_ids=$(cat "$DBGFS/target_ids")
-echo "" > "$DBGFS/target_ids"
-
-if [ -f "$DBGFS/monitor_on_DEPRECATED" ]
-then
- monitor_on_file="$DBGFS/monitor_on_DEPRECATED"
-else
- monitor_on_file="$DBGFS/monitor_on"
-fi
-
-orig_monitor_on=$(cat "$monitor_on_file")
-test_write_fail "$monitor_on_file" "on" "orig_monitor_on" "empty target ids"
-echo "$orig_target_ids" > "$DBGFS/target_ids"
+++ /dev/null
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0
-
-source _debugfs_common.sh
-
-# Test huge count read write
-# ==========================
-
-dmesg -C
-
-for file in "$DBGFS/"*
-do
- ./huge_count_read_write "$file"
-done
-
-if dmesg | grep -q WARNING
-then
- dmesg
- exit 1
-else
- exit 0
-fi
+++ /dev/null
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0
-
-source _debugfs_common.sh
-
-# Test putting non-ctx files/dirs to rm_contexts file
-# ===================================================
-
-dmesg -C
-
-for file in "$DBGFS/"*
-do
- (echo "$(basename "$f")" > "$DBGFS/rm_contexts") &> /dev/null
- if dmesg | grep -q BUG
- then
- dmesg
- exit 1
- fi
-done
+++ /dev/null
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0
-
-source _debugfs_common.sh
-
-# Test schemes file
-# =================
-
-file="$DBGFS/schemes"
-orig_content=$(cat "$file")
-
-test_write_succ "$file" "1 2 3 4 5 6 4 0 0 0 1 2 3 1 100 3 2 1" \
- "$orig_content" "valid input"
-test_write_fail "$file" "1 2
-3 4 5 6 3 0 0 0 1 2 3 1 100 3 2 1" "$orig_content" "multi lines"
-test_write_succ "$file" "" "$orig_content" "disabling"
-test_write_fail "$file" "2 1 2 1 10 1 3 10 1 1 1 1 1 1 1 1 2 3" \
- "$orig_content" "wrong condition ranges"
-echo "$orig_content" > "$file"
+++ /dev/null
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0
-
-source _debugfs_common.sh
-
-# Test target_ids file
-# ====================
-
-file="$DBGFS/target_ids"
-orig_content=$(cat "$file")
-
-test_write_succ "$file" "1 2 3 4" "$orig_content" "valid input"
-test_write_succ "$file" "1 2 abc 4" "$orig_content" "still valid input"
-test_content "$file" "$orig_content" "1 2" "non-integer was there"
-test_write_succ "$file" "abc 2 3" "$orig_content" "the file allows wrong input"
-test_content "$file" "$orig_content" "" "wrong input written"
-test_write_succ "$file" "" "$orig_content" "empty input"
-test_content "$file" "$orig_content" "" "empty input written"
-echo "$orig_content" > "$file"
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Author: SeongJae Park <sj@kernel.org>
- */
-
-#define _GNU_SOURCE
-
-#include <fcntl.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <sys/time.h>
-#include <unistd.h>
-
-#define DBGFS_TARGET_IDS "/sys/kernel/debug/damon/target_ids"
-
-static void write_targetid_exit(void)
-{
- int target_ids_fd = open(DBGFS_TARGET_IDS, O_RDWR);
- char pid_str[128];
-
- snprintf(pid_str, sizeof(pid_str), "%d", getpid());
- write(target_ids_fd, pid_str, sizeof(pid_str));
- close(target_ids_fd);
- exit(0);
-}
-
-unsigned long msec_timestamp(void)
-{
- struct timeval tv;
-
- gettimeofday(&tv, NULL);
- return tv.tv_sec * 1000UL + tv.tv_usec / 1000;
-}
-
-int main(int argc, char *argv[])
-{
- unsigned long start_ms;
- int time_to_run, nr_forks = 0;
-
- if (argc != 2) {
- fprintf(stderr, "Usage: %s <msecs to run>\n", argv[0]);
- exit(1);
- }
- time_to_run = atoi(argv[1]);
-
- start_ms = msec_timestamp();
- while (true) {
- int pid = fork();
-
- if (pid < 0) {
- fprintf(stderr, "fork() failed\n");
- exit(1);
- }
- if (pid == 0)
- write_targetid_exit();
- wait(NULL);
- nr_forks++;
-
- if (msec_timestamp() - start_ms > time_to_run)
- break;
- }
- printf("%d\n", nr_forks);
- return 0;
-}
+++ /dev/null
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0
-
-before=$(grep "^pid " /proc/slabinfo | awk '{print $2}')
-
-nr_leaks=$(./debugfs_target_ids_pid_leak 1000)
-expected_after_max=$((before + nr_leaks / 2))
-
-after=$(grep "^pid " /proc/slabinfo | awk '{print $2}')
-
-echo > /sys/kernel/debug/damon/target_ids
-
-echo "tried $nr_leaks pid leak"
-echo "number of active pid slabs: $before -> $after"
-echo "(up to $expected_after_max expected)"
-if [ $after -gt $expected_after_max ]
-then
- echo "maybe pids are leaking"
- exit 1
-else
- exit 0
-fi
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Author: SeongJae Park <sj@kernel.org>
- */
-#define _GNU_SOURCE
-
-#include <fcntl.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <time.h>
-#include <unistd.h>
-
-#define DBGFS_MONITOR_ON "/sys/kernel/debug/damon/monitor_on_DEPRECATED"
-#define DBGFS_TARGET_IDS "/sys/kernel/debug/damon/target_ids"
-
-static void turn_damon_on_exit(void)
-{
- int target_ids_fd = open(DBGFS_TARGET_IDS, O_RDWR);
- int monitor_on_fd = open(DBGFS_MONITOR_ON, O_RDWR);
- char pid_str[128];
-
- snprintf(pid_str, sizeof(pid_str), "%d", getpid());
- write(target_ids_fd, pid_str, sizeof(pid_str));
- write(monitor_on_fd, "on\n", 3);
- close(target_ids_fd);
- close(monitor_on_fd);
- usleep(1000);
- exit(0);
-}
-
-static void try_race(void)
-{
- int target_ids_fd = open(DBGFS_TARGET_IDS, O_RDWR);
- int pid = fork();
- int buf[256];
-
- if (pid < 0) {
- fprintf(stderr, "fork() failed\n");
- exit(1);
- }
- if (pid == 0)
- turn_damon_on_exit();
- while (true) {
- int status;
-
- read(target_ids_fd, buf, sizeof(buf));
- if (waitpid(-1, &status, WNOHANG) == pid)
- break;
- }
- close(target_ids_fd);
-}
-
-static inline uint64_t ts_to_ms(struct timespec *ts)
-{
- return (uint64_t)ts->tv_sec * 1000 + (uint64_t)ts->tv_nsec / 1000000;
-}
-
-int main(int argc, char *argv[])
-{
- struct timespec start_time, now;
- int runtime_ms;
-
- if (argc != 2) {
- fprintf(stderr, "Usage: %s <runtime in ms>\n", argv[0]);
- exit(1);
- }
- runtime_ms = atoi(argv[1]);
- clock_gettime(CLOCK_MONOTONIC, &start_time);
- while (true) {
- try_race();
- clock_gettime(CLOCK_MONOTONIC, &now);
- if (ts_to_ms(&now) - ts_to_ms(&start_time) > runtime_ms)
- break;
- }
- return 0;
-}
+++ /dev/null
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0
-
-dmesg -C
-
-./debugfs_target_ids_read_before_terminate_race 5000
-
-if dmesg | grep -q dbgfs_target_ids_read
-then
- dmesg
- exit 1
-else
- exit 0
-fi
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Author: SeongJae Park <sj@kernel.org>
- */
-
-#include <fcntl.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-
-#pragma GCC diagnostic push
-#if __GNUC__ >= 11 && __GNUC_MINOR__ >= 1
-/* Ignore read(2) overflow and write(2) overread compile warnings */
-#pragma GCC diagnostic ignored "-Wstringop-overread"
-#pragma GCC diagnostic ignored "-Wstringop-overflow"
-#endif
-
-void write_read_with_huge_count(char *file)
-{
- int filedesc = open(file, O_RDWR);
- char buf[256];
- int ret;
-
- printf("%s %s\n", __func__, file);
- if (filedesc < 0) {
- fprintf(stderr, "failed opening %s\n", file);
- exit(1);
- }
-
- write(filedesc, "", 0xfffffffful);
- ret = read(filedesc, buf, 0xfffffffful);
- close(filedesc);
-}
-
-#pragma GCC diagnostic pop
-
-int main(int argc, char *argv[])
-{
- if (argc != 2) {
- fprintf(stderr, "Usage: %s <file>\n", argv[0]);
- exit(1);
- }
- write_read_with_huge_count(argv[1]);
-
- return 0;
-}
projects / linux-platform-drivers-x86.git / commitdiff