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perf intel-pt: Fix system_wide dummy event for hybrid 

commit 6cef7dab3e upstream.

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: 7d189cadbe ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Adrian Hunter 2022-10-12 11:22:59 +03:00 committed by Greg Kroah-Hartman
parent 41e4f3b625
commit bd31835088
1 changed files with 1 additions and 1 deletions
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2
tools/perf/arch/x86/util/intel-pt.c
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@ -871,7 +871,7 @@ 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);