@@ -776,6 +776,35 @@ static bool pmu_uncore_alias_match(const char *pmu_name, const char *name)
return res;
}
+bool pmu_uncore_identifier_match(const char *id, const char *compat)
+{
+ char *tmp = NULL, *tok, *str;
+ bool res;
+ int n;
+
+ /*
+ * The strdup() call is necessary here because "compat" is a const str*
+ * type and cannot be used as an argument to strtok_r().
+ */
+ str = strdup(compat);
+ if (!str)
+ return false;
+
+ tok = strtok_r(str, ";", &tmp);
+ for (; tok; tok = strtok_r(NULL, ";", &tmp)) {
+ n = strlen(tok);
+ if ((tok[n - 1] == '*' && !strncmp(id, tok, n - 1)) ||
+ !strcmp(id, tok)) {
+ res = true;
+ goto out;
+ }
+ }
+ res = false;
+out:
+ free(str);
+ return res;
+}
+
struct pmu_add_cpu_aliases_map_data {
struct list_head *head;
const char *name;
@@ -847,8 +876,8 @@ static int pmu_add_sys_aliases_iter_fn(const struct pmu_event *pe,
if (!pe->compat || !pe->pmu)
return 0;
- if (!strcmp(pmu->id, pe->compat) &&
- pmu_uncore_alias_match(pe->pmu, pmu->name)) {
+ if (pmu_uncore_alias_match(pe->pmu, pmu->name) &&
+ pmu_uncore_identifier_match(pmu->id, pe->compat)) {
__perf_pmu__new_alias(idata->head, -1,
(char *)pe->name,
(char *)pe->desc,
@@ -241,6 +241,7 @@ void pmu_add_cpu_aliases_table(struct list_head *head, struct perf_pmu *pmu,
char *perf_pmu__getcpuid(struct perf_pmu *pmu);
const struct pmu_events_table *pmu_events_table__find(void);
const struct pmu_metrics_table *pmu_metrics_table__find(void);
+bool pmu_uncore_identifier_match(const char *id, const char *compat);
void perf_pmu_free_alias(struct perf_pmu_alias *alias);
int perf_pmu__convert_scale(const char *scale, char **end, double *sval);
The jevent "Compat" is used for uncore PMU alias or metric definitions. The same PMU driver has different PMU identifiers due to different hardware versions and types, but they may have some common PMU event. Since a Compat value can only match one identifier, when adding the same event alias to PMUs with different identifiers, each identifier needs to be defined once, which is not streamlined enough. So let "Compat" supports matching multiple identifiers for uncore PMU alias. For example, the Compat value {43401;436*} can match the PMU identifier "43401", that is, CMN600_r0p0, and the PMU identifier with the prefix "436", that is, all CMN650, where "*" is a wildcard. Tokens in Unit field are delimited by ';' with no spaces. Signed-off-by: Jing Zhang <renyu.zj@linux.alibaba.com> --- tools/perf/util/pmu.c | 33 +++++++++++++++++++++++++++++++-- tools/perf/util/pmu.h | 1 + 2 files changed, 32 insertions(+), 2 deletions(-)