diff options
| author | Ravi Bangoria <[email protected]> | 2023-06-15 10:47:00 +0530 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <[email protected]> | 2023-06-16 10:51:42 -0300 |
| commit | 5752c20f3787c9bc9ff9411a70b3d41add85518c (patch) | |
| tree | 9d9591464d34025dd904187ef181ca31c67301d2 | |
| parent | f0dc208267bb744e3b2008bb11f68d02663330ef (diff) | |
perf mem: Scan all PMUs instead of just core ones
Scanning only core PMUs is not sufficient on platforms like AMD since
perf mem on AMD uses IBS OP PMU, which is independent of core PMU.
Scan all PMUs instead of just core PMUs. There should be negligible
performance overhead because of scanning all PMUs, so we should be okay.
Reviewed-by: Ian Rogers <[email protected]>
Signed-off-by: Ravi Bangoria <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Ali Saidi <[email protected]>
Cc: Ananth Narayan <[email protected]>
Cc: James Clark <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Leo Yan <[email protected]>
Cc: Madhavan Srinivasan <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Sandipan Das <[email protected]>
Cc: Santosh Shukla <[email protected]>
Cc: Thomas Richter <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
| -rw-r--r-- | tools/perf/util/mem-events.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c index be15aadb6b14..c07fe3a90722 100644 --- a/tools/perf/util/mem-events.c +++ b/tools/perf/util/mem-events.c @@ -130,7 +130,12 @@ int perf_mem_events__init(void) if (!e->tag) continue; - while ((pmu = perf_pmus__scan_core(pmu)) != NULL) { + /* + * Scan all PMUs not just core ones, since perf mem/c2c on + * platforms like AMD uses IBS OP PMU which is independent + * of core PMU. + */ + while ((pmu = perf_pmus__scan(pmu)) != NULL) { scnprintf(sysfs_name, sizeof(sysfs_name), e->sysfs_name, pmu->name); e->supported |= perf_mem_event__supported(mnt, sysfs_name); } @@ -165,7 +170,7 @@ static void perf_mem_events__print_unsupport_hybrid(struct perf_mem_event *e, char sysfs_name[100]; struct perf_pmu *pmu = NULL; - while ((pmu = perf_pmus__scan_core(pmu)) != NULL) { + while ((pmu = perf_pmus__scan(pmu)) != NULL) { scnprintf(sysfs_name, sizeof(sysfs_name), e->sysfs_name, pmu->name); if (!perf_mem_event__supported(mnt, sysfs_name)) { @@ -188,7 +193,7 @@ int perf_mem_events__record_args(const char **rec_argv, int *argv_nr, if (!e->record) continue; - if (perf_pmus__num_core_pmus() == 1) { + if (perf_pmus__num_mem_pmus() == 1) { if (!e->supported) { pr_err("failed: event '%s' not supported\n", perf_mem_events__name(j, NULL)); @@ -203,7 +208,7 @@ int perf_mem_events__record_args(const char **rec_argv, int *argv_nr, return -1; } - while ((pmu = perf_pmus__scan_core(pmu)) != NULL) { + while ((pmu = perf_pmus__scan(pmu)) != NULL) { rec_argv[i++] = "-e"; s = perf_mem_events__name(j, pmu->name); if (s) { |