1 files changed, 80 insertions, 7 deletions

diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 4c6f9c490a8d..bc9d8069d376 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -73,7 +73,7 @@ int perf_pmu__format_parse(char *dir, struct list_head *head)
  * located at:
  * /sys/bus/event_source/devices/<dev>/format as sysfs group attributes.
  */
-static int pmu_format(char *name, struct list_head *format)
+static int pmu_format(const char *name, struct list_head *format)
 {
         struct stat st;
         char path[PATH_MAX];
@@ -162,7 +162,7 @@ static int pmu_aliases_parse(char *dir, struct list_head *head)
  * Reading the pmu event aliases definition, which should be located at:
  * /sys/bus/event_source/devices/<dev>/events as sysfs group attributes.
  */
-static int pmu_aliases(char *name, struct list_head *head)
+static int pmu_aliases(const char *name, struct list_head *head)
 {
         struct stat st;
         char path[PATH_MAX];
@@ -208,7 +208,7 @@ static int pmu_alias_terms(struct perf_pmu_alias *alias,
  * located at:
  * /sys/bus/event_source/devices/<dev>/type as sysfs attribute.
  */
-static int pmu_type(char *name, __u32 *type)
+static int pmu_type(const char *name, __u32 *type)
 {
         struct stat st;
         char path[PATH_MAX];
@@ -266,7 +266,7 @@ static void pmu_read_sysfs(void)
         closedir(dir);
 }
 
-static struct cpu_map *pmu_cpumask(char *name)
+static struct cpu_map *pmu_cpumask(const char *name)
 {
         struct stat st;
         char path[PATH_MAX];
@@ -293,7 +293,7 @@ static struct cpu_map *pmu_cpumask(char *name)
         return cpus;
 }
 
-static struct perf_pmu *pmu_lookup(char *name)
+static struct perf_pmu *pmu_lookup(const char *name)
 {
         struct perf_pmu *pmu;
         LIST_HEAD(format);
@@ -330,7 +330,7 @@ static struct perf_pmu *pmu_lookup(char *name)
         return pmu;
 }
 
-static struct perf_pmu *pmu_find(char *name)
+static struct perf_pmu *pmu_find(const char *name)
 {
         struct perf_pmu *pmu;
 
@@ -356,7 +356,7 @@ struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu)
         return NULL;
 }
 
-struct perf_pmu *perf_pmu__find(char *name)
+struct perf_pmu *perf_pmu__find(const char *name)
 {
         struct perf_pmu *pmu;
 
@@ -564,3 +564,76 @@ void perf_pmu__set_format(unsigned long *bits, long from, long to)
         for (b = from; b <= to; b++)
                 set_bit(b, bits);
 }
+
+static char *format_alias(char *buf, int len, struct perf_pmu *pmu,
+                          struct perf_pmu_alias *alias)
+{
+        snprintf(buf, len, "%s/%s/", pmu->name, alias->name);
+        return buf;
+}
+
+static char *format_alias_or(char *buf, int len, struct perf_pmu *pmu,
+                             struct perf_pmu_alias *alias)
+{
+        snprintf(buf, len, "%s OR %s/%s/", alias->name, pmu->name, alias->name);
+        return buf;
+}
+
+static int cmp_string(const void *a, const void *b)
+{
+        const char * const *as = a;
+        const char * const *bs = b;
+        return strcmp(*as, *bs);
+}
+
+void print_pmu_events(const char *event_glob, bool name_only)
+{
+        struct perf_pmu *pmu;
+        struct perf_pmu_alias *alias;
+        char buf[1024];
+        int printed = 0;
+        int len, j;
+        char **aliases;
+
+        pmu = NULL;
+        len = 0;
+        while ((pmu = perf_pmu__scan(pmu)) != NULL)
+                list_for_each_entry(alias, &pmu->aliases, list)
+                        len++;
+        aliases = malloc(sizeof(char *) * len);
+        if (!aliases)
+                return;
+        pmu = NULL;
+        j = 0;
+        while ((pmu = perf_pmu__scan(pmu)) != NULL)
+                list_for_each_entry(alias, &pmu->aliases, list) {
+                        char *name = format_alias(buf, sizeof(buf), pmu, alias);
+                        bool is_cpu = !strcmp(pmu->name, "cpu");
+
+                        if (event_glob != NULL &&
+                            !(strglobmatch(name, event_glob) ||
+                              (!is_cpu && strglobmatch(alias->name,
+                                                       event_glob))))
+                                continue;
+                        aliases[j] = name;
+                        if (is_cpu && !name_only)
+                                aliases[j] = format_alias_or(buf, sizeof(buf),
+                                                              pmu, alias);
+                        aliases[j] = strdup(aliases[j]);
+                        j++;
+                }
+        len = j;
+        qsort(aliases, len, sizeof(char *), cmp_string);
+        for (j = 0; j < len; j++) {
+                if (name_only) {
+                        printf("%s ", aliases[j]);
+                        continue;
+                }
+                printf("  %-50s [Kernel PMU event]\n", aliases[j]);
+                free(aliases[j]);
+                printed++;
+        }
+        if (printed)
+                printf("\n");
+        free(aliases);
+}