tools/power turbostat: Move debug prints from stdout to stderr

This leaves the stdout cleaner, having only counter data. It makes it
easier for programs to parse the output of turbostat, for example
selftests.

Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index be345a4bbe966398fe6a29f27680201474d6af0d..cccd9f4311a08e1bc71af45510fd98cb3444f545 100644 (file)
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -1984,6 +1984,7 @@ void help(void)
                "  -c, --cpu    cpu-set limit output to summary plus cpu-set:\n"
                "                 {core | package | j,k,l..m,n-p }\n"
                "  -d, --debug  displays usec, Time_Of_Day_Seconds and more debugging\n"
+               "               debug messages are printed to stderr\n"
                "  -D, --Dump   displays the raw counter values\n"
                "  -e, --enable [all | column]\n"
                "               shows all or the specified disabled column\n"
@@ -8262,7 +8263,7 @@ int added_perf_counters_init_(struct perf_counter_info *pinfo)
                        pinfo->scale = perf_scale;
 
                        if (debug)
-                               printf("Add perf/%s/%s cpu%d: %d\n",
+                               fprintf(stderr, "Add perf/%s/%s cpu%d: %d\n",
                                       pinfo->device, pinfo->event, cpu, pinfo->fd_perf_per_domain[next_domain]);
                }
 
@@ -8422,7 +8423,7 @@ struct msr_counter *find_msrp_by_name(struct msr_counter *head, char *name)
 
        for (mp = head; mp; mp = mp->next) {
                if (debug)
-                       printf("%s: %s %s\n", __func__, name, mp->name);
+                       fprintf(stderr, "%s: %s %s\n", __func__, name, mp->name);
                if (!strncmp(name, mp->name, strlen(mp->name)))
                        return mp;
        }
@@ -8439,8 +8440,8 @@ int add_counter(unsigned int msr_num, char *path, char *name,
                errx(1, "Requested MSR counter 0x%x, but in --no-msr mode", msr_num);
 
        if (debug)
-               printf("%s(msr%d, %s, %s, width%d, scope%d, type%d, format%d, flags%x, id%d)\n", __func__, msr_num,
-                      path, name, width, scope, type, format, flags, id);
+               fprintf(stderr, "%s(msr%d, %s, %s, width%d, scope%d, type%d, format%d, flags%x, id%d)\n",
+                       __func__, msr_num, path, name, width, scope, type, format, flags, id);
 
        switch (scope) {
 
@@ -8448,7 +8449,7 @@ int add_counter(unsigned int msr_num, char *path, char *name,
                msrp = find_msrp_by_name(sys.tp, name);
                if (msrp) {
                        if (debug)
-                               printf("%s: %s FOUND\n", __func__, name);
+                               fprintf(stderr, "%s: %s FOUND\n", __func__, name);
                        break;
                }
                if (sys.added_thread_counters++ >= MAX_ADDED_THREAD_COUNTERS) {
@@ -8460,7 +8461,7 @@ int add_counter(unsigned int msr_num, char *path, char *name,
                msrp = find_msrp_by_name(sys.cp, name);
                if (msrp) {
                        if (debug)
-                               printf("%s: %s FOUND\n", __func__, name);
+                               fprintf(stderr, "%s: %s FOUND\n", __func__, name);
                        break;
                }
                if (sys.added_core_counters++ >= MAX_ADDED_CORE_COUNTERS) {
@@ -8472,7 +8473,7 @@ int add_counter(unsigned int msr_num, char *path, char *name,
                msrp = find_msrp_by_name(sys.pp, name);
                if (msrp) {
                        if (debug)
-                               printf("%s: %s FOUND\n", __func__, name);
+                               fprintf(stderr, "%s: %s FOUND\n", __func__, name);
                        break;
                }
                if (sys.added_package_counters++ >= MAX_ADDED_PACKAGE_COUNTERS) {
@@ -8617,7 +8618,7 @@ int add_perf_counter(const char *perf_device, const char *perf_event, const char
 
        // FIXME: we might not have debug here yet
        if (debug)
-               printf("%s: %s/%s, name: %s, scope%d\n",
+               fprintf(stderr, "%s: %s/%s, name: %s, scope%d\n",
                       __func__, pinfo->device, pinfo->event, pinfo->name, pinfo->scope);
 
        return 0;