[PATCH v1 1/4] perf parse-events x86: Avoid sorting uops_retired.slots

From: Ian Rogers
Date: Tue Aug 01 2023 - 01:37:05 EST


As topdown.slots may appear as slots it may get confused with
uops_retired.slots which is an invalid perf metric event group
leader. Special case uops_retired.slots to avoid this confusion.

Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
tools/perf/arch/x86/util/evlist.c | 7 ++++---
tools/perf/arch/x86/util/evsel.c | 7 +++----
2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/tools/perf/arch/x86/util/evlist.c b/tools/perf/arch/x86/util/evlist.c
index cbd582182932..b1ce0c52d88d 100644
--- a/tools/perf/arch/x86/util/evlist.c
+++ b/tools/perf/arch/x86/util/evlist.c
@@ -75,11 +75,12 @@ int arch_evlist__add_default_attrs(struct evlist *evlist,

int arch_evlist__cmp(const struct evsel *lhs, const struct evsel *rhs)
{
- if (topdown_sys_has_perf_metrics() && evsel__sys_has_perf_metrics(lhs)) {
+ if (topdown_sys_has_perf_metrics() &&
+ (arch_evsel__must_be_in_group(lhs) || arch_evsel__must_be_in_group(rhs))) {
/* Ensure the topdown slots comes first. */
- if (strcasestr(lhs->name, "slots"))
+ if (strcasestr(lhs->name, "slots") && !strcasestr(lhs->name, "uops_retired.slots"))
return -1;
- if (strcasestr(rhs->name, "slots"))
+ if (strcasestr(rhs->name, "slots") && !strcasestr(rhs->name, "uops_retired.slots"))
return 1;
/* Followed by topdown events. */
if (strcasestr(lhs->name, "topdown") && !strcasestr(rhs->name, "topdown"))
diff --git a/tools/perf/arch/x86/util/evsel.c b/tools/perf/arch/x86/util/evsel.c
index 81d22657922a..090d0f371891 100644
--- a/tools/perf/arch/x86/util/evsel.c
+++ b/tools/perf/arch/x86/util/evsel.c
@@ -40,12 +40,11 @@ bool evsel__sys_has_perf_metrics(const struct evsel *evsel)

bool arch_evsel__must_be_in_group(const struct evsel *evsel)
{
- if (!evsel__sys_has_perf_metrics(evsel))
+ if (!evsel__sys_has_perf_metrics(evsel) || !evsel->name ||
+ strcasestr(evsel->name, "uops_retired.slots"))
return false;

- return evsel->name &&
- (strcasestr(evsel->name, "slots") ||
- strcasestr(evsel->name, "topdown"));
+ return strcasestr(evsel->name, "topdown") || strcasestr(evsel->name, "slots");
}

int arch_evsel__hw_name(struct evsel *evsel, char *bf, size_t size)
--
2.41.0.585.gd2178a4bd4-goog