git/linux-cryptodev-2.6
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git synced 2026-04-27 03:49:57 -04:00
Code Issues Packages Projects Releases Wiki Activity

perf evlist: Remove nr_groups

Browse Source 
Maintaining the number of groups during event parsing is problematic
and since changing to sort/regroup events can only be computed by a
linear pass over the evlist. As the value is generally only used in
tests, rather than hold it in a variable compute it by passing over
the evlist when necessary.

This change highlights that libpfm's counting of groups with a single
entry disagreed with regular event parsing. The libpfm tests are
updated accordingly.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kim Phillips <kim.phillips@amd.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Steinar H. Gunderson <sesse@google.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20230312021543.3060328-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ian Rogers
2023-03-11 18:15:42 -08:00
committed by Arnaldo Carvalho de Melo
parent e733f87e8c
commit 9d2dc632e0
15 changed files with 45 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
tools/perf/util/header.c
View File

@@ -786,7 +786,7 @@ static int write_pmu_mappings(struct feat_fd *ff,
static int write_group_desc(struct feat_fd *ff,
struct evlist *evlist)
{
u32 nr_groups = evlist->core.nr_groups;
u32 nr_groups = evlist__nr_groups(evlist);
struct evsel *evsel;
int ret;
@@ -2807,7 +2807,6 @@ static int process_group_desc(struct feat_fd *ff, void *data __maybe_unused)
* Rebuild group relationship based on the group_desc
*/
session = container_of(ff->ph, struct perf_session, header);
session->evlist->core.nr_groups = nr_groups;
i = nr = 0;
evlist__for_each_entry(session->evlist, evsel) {