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authorAdrian Hunter <adrian.hunter@intel.com>2022-10-12 11:22:59 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2022-10-15 10:13:16 -0300
commit6cef7dab3e2e5cb23a13569c3880c0532326748c (patch)
tree03b1228d04024437bc0c899a38bb97f888b6c548
parent5a3d47071f0ced0431ef82a5fb6bd077ed9493db (diff)
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perf intel-pt: Fix system_wide dummy event for hybrid
User space tasks can migrate between CPUs, so when tracing selected CPUs, system-wide sideband is still needed, however evlist->core.has_user_cpus is not set in the hybrid case, so check the target cpu_list instead. Fixes: 7d189cadbeebc778 ("perf intel-pt: Track sideband system-wide when needed") Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20221012082259.22394-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r--tools/perf/arch/x86/util/intel-pt.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/arch/x86/util/intel-pt.c b/tools/perf/arch/x86/util/intel-pt.c
index 793b35f2221a..af102f471e9f 100644
--- a/tools/perf/arch/x86/util/intel-pt.c
+++ b/tools/perf/arch/x86/util/intel-pt.c
@@ -866,7 +866,7 @@ static int intel_pt_recording_options(struct auxtrace_record *itr,
* User space tasks can migrate between CPUs, so when tracing
* selected CPUs, sideband for all CPUs is still needed.
*/
- need_system_wide_tracking = evlist->core.has_user_cpus &&
+ need_system_wide_tracking = opts->target.cpu_list &&
!intel_pt_evsel->core.attr.exclude_user;
tracking_evsel = evlist__add_aux_dummy(evlist, need_system_wide_tracking);