diff options
| author | Jin Yao <yao.jin@linux.intel.com> | 2021-07-23 14:34:32 +0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-08-11 16:04:33 -0300 |
| commit | b726e3634eb3605bd61d3a7a69dad6455b947256 (patch) | |
| tree | 55587e13e815fbe0ef6b392a0143846345584da9 /tools/perf/util | |
| parent | 2696d6e59c00b13a0b27cfc39a509577f937b44e (diff) | |
perf tools: Create hybrid flag in target
The user may count or collect only on a cpu list via '-C/--cpus' option.
Previously cpus for an evsel were retrieved from PMU's sysfs. But if the
target cpu list is defined, the retrieved cpus are not kept and the
target cpu list is used instead.
But for hybrid system, we can't directly use target cpu list. The cpu
list may not be available on hybrid pmu (e.g. cpu_core or cpu_atom). So
we should not set the 'has_user_cpus' flag for hybrid system.
The difficulity is that we can't call perf_pmu__has_hybrid() in evlist.c
to check hybrid system otherwise 'perf test python' would be failed
(undefined symbol for perf_pmu__has_hybrid). If we add pmu.c to
python-ext-sources, too many symbol dependencies are hard to resolve.
We use an alternative method by using a new 'hybrid' flag in target
for hybrid system checking.
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https //lore.kernel.org/r/20210723063433.7318-3-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util')
| -rw-r--r-- | tools/perf/util/evlist.c | 2 | ||||
| -rw-r--r-- | tools/perf/util/target.h | 1 |
2 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 47581a237c7a..06f8890816c3 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -1002,7 +1002,7 @@ int evlist__create_maps(struct evlist *evlist, struct target *target) if (!cpus) goto out_delete_threads; - evlist->core.has_user_cpus = !!target->cpu_list; + evlist->core.has_user_cpus = !!target->cpu_list && !target->hybrid; perf_evlist__set_maps(&evlist->core, cpus, threads); diff --git a/tools/perf/util/target.h b/tools/perf/util/target.h index 4ff56217f2a6..daec6cba500d 100644 --- a/tools/perf/util/target.h +++ b/tools/perf/util/target.h @@ -17,6 +17,7 @@ struct target { bool default_per_cpu; bool per_thread; bool use_bpf; + bool hybrid; const char *attr_map; }; |