Merge branches 'pm-core', 'pm-qos', 'pm-domains' and 'pm-opp'

[linux.git] / tools / perf / util / pmu.c

diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index dc6ccaa4e927485ca803f537d7b398ef016b16b0..49bfee0e3d9ed0b483180a74b7bfd96954f4968b 100644 (file)
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -94,32 +94,10 @@ static int pmu_format(const char *name, struct list_head *format)
        return 0;
 }
 
-static int perf_pmu__parse_scale(struct perf_pmu_alias *alias, char *dir, char *name)
+static int convert_scale(const char *scale, char **end, double *sval)
 {
-       struct stat st;
-       ssize_t sret;
-       char scale[128];
-       int fd, ret = -1;
-       char path[PATH_MAX];
        char *lc;
-
-       snprintf(path, PATH_MAX, "%s/%s.scale", dir, name);
-
-       fd = open(path, O_RDONLY);
-       if (fd == -1)
-               return -1;
-
-       if (fstat(fd, &st) < 0)
-               goto error;
-
-       sret = read(fd, scale, sizeof(scale)-1);
-       if (sret < 0)
-               goto error;
-
-       if (scale[sret - 1] == '\n')
-               scale[sret - 1] = '\0';
-       else
-               scale[sret] = '\0';
+       int ret = 0;
 
        /*
         * save current locale
@@ -134,7 +112,7 @@ static int perf_pmu__parse_scale(struct perf_pmu_alias *alias, char *dir, char *
        lc = strdup(lc);
        if (!lc) {
                ret = -ENOMEM;
-               goto error;
+               goto out;
        }
 
        /*
@@ -144,14 +122,42 @@ static int perf_pmu__parse_scale(struct perf_pmu_alias *alias, char *dir, char *
         */
        setlocale(LC_NUMERIC, "C");
 
-       alias->scale = strtod(scale, NULL);
+       *sval = strtod(scale, end);
 
+out:
        /* restore locale */
        setlocale(LC_NUMERIC, lc);
-
        free(lc);
+       return ret;
+}
+
+static int perf_pmu__parse_scale(struct perf_pmu_alias *alias, char *dir, char *name)
+{
+       struct stat st;
+       ssize_t sret;
+       char scale[128];
+       int fd, ret = -1;
+       char path[PATH_MAX];
+
+       snprintf(path, PATH_MAX, "%s/%s.scale", dir, name);
+
+       fd = open(path, O_RDONLY);
+       if (fd == -1)
+               return -1;
+
+       if (fstat(fd, &st) < 0)
+               goto error;
+
+       sret = read(fd, scale, sizeof(scale)-1);
+       if (sret < 0)
+               goto error;
 
-       ret = 0;
+       if (scale[sret - 1] == '\n')
+               scale[sret - 1] = '\0';
+       else
+               scale[sret] = '\0';
+
+       ret = convert_scale(scale, NULL, &alias->scale);
 error:
        close(fd);
        return ret;
@@ -223,11 +229,13 @@ static int perf_pmu__parse_snapshot(struct perf_pmu_alias *alias,
 }
 
 static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
-                                char *desc, char *val, char *long_desc,
-                                char *topic)
+                                char *desc, char *val,
+                                char *long_desc, char *topic,
+                                char *unit, char *perpkg)
 {
        struct perf_pmu_alias *alias;
        int ret;
+       int num;
 
        alias = malloc(sizeof(*alias));
        if (!alias)
@@ -261,6 +269,13 @@ static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
        alias->long_desc = long_desc ? strdup(long_desc) :
                                desc ? strdup(desc) : NULL;
        alias->topic = topic ? strdup(topic) : NULL;
+       if (unit) {
+               if (convert_scale(unit, &unit, &alias->scale) < 0)
+                       return -1;
+               snprintf(alias->unit, sizeof(alias->unit), "%s", unit);
+       }
+       alias->per_pkg = perpkg && sscanf(perpkg, "%d", &num) == 1 && num == 1;
+       alias->str = strdup(val);
 
        list_add_tail(&alias->list, list);
 
@@ -278,7 +293,8 @@ static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FI
 
        buf[ret] = 0;
 
-       return __perf_pmu__new_alias(list, dir, name, NULL, buf, NULL, NULL);
+       return __perf_pmu__new_alias(list, dir, name, NULL, buf, NULL, NULL, NULL,
+                                    NULL);
 }
 
 static inline bool pmu_alias_info_file(char *name)
@@ -498,7 +514,7 @@ char * __weak get_cpuid_str(void)
  * to the current running CPU. Then, add all PMU events from that table
  * as aliases.
  */
-static void pmu_add_cpu_aliases(struct list_head *head)
+static void pmu_add_cpu_aliases(struct list_head *head, const char *name)
 {
        int i;
        struct pmu_events_map *map;
@@ -534,14 +550,21 @@ static void pmu_add_cpu_aliases(struct list_head *head)
         */
        i = 0;
        while (1) {
+               const char *pname;
+
                pe = &map->table[i++];
                if (!pe->name)
                        break;
 
+               pname = pe->pmu ? pe->pmu : "cpu";
+               if (strncmp(pname, name, strlen(pname)))
+                       continue;
+
                /* need type casts to override 'const' */
                __perf_pmu__new_alias(head, NULL, (char *)pe->name,
                                (char *)pe->desc, (char *)pe->event,
-                               (char *)pe->long_desc, (char *)pe->topic);
+                               (char *)pe->long_desc, (char *)pe->topic,
+                               (char *)pe->unit, (char *)pe->perpkg);
        }
 
 out:
@@ -569,15 +592,16 @@ static struct perf_pmu *pmu_lookup(const char *name)
        if (pmu_format(name, &format))
                return NULL;
 
-       if (pmu_aliases(name, &aliases))
+       /*
+        * Check the type first to avoid unnecessary work.
+        */
+       if (pmu_type(name, &type))
                return NULL;
 
-       if (!strcmp(name, "cpu"))
-               pmu_add_cpu_aliases(&aliases);
-
-       if (pmu_type(name, &type))
+       if (pmu_aliases(name, &aliases))
                return NULL;
 
+       pmu_add_cpu_aliases(&aliases, name);
        pmu = zalloc(sizeof(*pmu));
        if (!pmu)
                return NULL;
@@ -921,12 +945,12 @@ static int check_info_data(struct perf_pmu_alias *alias,
         * define unit, scale and snapshot, fail
         * if there's more than one.
         */
-       if ((info->unit && alias->unit) ||
+       if ((info->unit && alias->unit[0]) ||
            (info->scale && alias->scale) ||
            (info->snapshot && alias->snapshot))
                return -EINVAL;
 
-       if (alias->unit)
+       if (alias->unit[0])
                info->unit = alias->unit;
 
        if (alias->scale)
@@ -1065,6 +1089,8 @@ struct sevent {
        char *name;
        char *desc;
        char *topic;
+       char *str;
+       char *pmu;
 };
 
 static int cmp_sevent(const void *a, const void *b)
@@ -1161,6 +1187,8 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
                        aliases[j].desc = long_desc ? alias->long_desc :
                                                alias->desc;
                        aliases[j].topic = alias->topic;
+                       aliases[j].str = alias->str;
+                       aliases[j].pmu = pmu->name;
                        j++;
                }
                if (pmu->selectable &&
@@ -1175,6 +1203,9 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
        len = j;
        qsort(aliases, len, sizeof(struct sevent), cmp_sevent);
        for (j = 0; j < len; j++) {
+               /* Skip duplicates */
+               if (j > 0 && !strcmp(aliases[j].name, aliases[j - 1].name))
+                       continue;
                if (name_only) {
                        printf("%s ", aliases[j].name);
                        continue;
@@ -1192,6 +1223,8 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
                        printf("%*s", 8, "[");
                        wordwrap(aliases[j].desc, 8, columns, 0);
                        printf("]\n");
+                       if (verbose)
+                               printf("%*s%s/%s/\n", 8, "", aliases[j].pmu, aliases[j].str);
                } else
                        printf("  %-50s [Kernel PMU event]\n", aliases[j].name);
                printed++;