Commit 6cef7dab authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
Browse files

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: 7d189cad ("perf intel-pt: Track sideband system-wide when needed")
Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Acked-by: default avatarNamhyung 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: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 5a3d4707

tools/perf/arch/x86/util/intel-pt.c

+1 −1
Original line number Diff line number Diff line
@@ -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);