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Subject[tip: perf/core] perf intel-bts: Does not support AUX area sampling
The following commit has been merged into the perf/core branch of tip:

Commit-ID: 32a1ece4bdbde24734ab16484bad7316f03fc42d
Gitweb: https://git.kernel.org/tip/32a1ece4bdbde24734ab16484bad7316f03fc42d
Author: Adrian Hunter <adrian.hunter@intel.com>
AuthorDate: Fri, 15 Nov 2019 14:42:25 +02:00
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitterDate: Fri, 22 Nov 2019 10:48:13 -03:00

perf intel-bts: Does not support AUX area sampling

Add an error message because Intel BTS does not support AUX area
sampling.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lore.kernel.org/lkml/20191115124225.5247-16-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/arch/x86/util/auxtrace.c | 2 ++
tools/perf/arch/x86/util/intel-bts.c | 5 +++++
2 files changed, 7 insertions(+)

diff --git a/tools/perf/arch/x86/util/auxtrace.c b/tools/perf/arch/x86/util/auxtrace.c
index 092543c..7abc9fd 100644
--- a/tools/perf/arch/x86/util/auxtrace.c
+++ b/tools/perf/arch/x86/util/auxtrace.c
@@ -29,6 +29,8 @@ struct auxtrace_record *auxtrace_record__init_intel(struct evlist *evlist,
if (intel_pt_pmu)
intel_pt_pmu->auxtrace = true;
intel_bts_pmu = perf_pmu__find(INTEL_BTS_PMU_NAME);
+ if (intel_bts_pmu)
+ intel_bts_pmu->auxtrace = true;

evlist__for_each_entry(evlist, evsel) {
if (intel_pt_pmu && evsel->core.attr.type == intel_pt_pmu->type)
diff --git a/tools/perf/arch/x86/util/intel-bts.c b/tools/perf/arch/x86/util/intel-bts.c
index f7f68a5..27d9e21 100644
--- a/tools/perf/arch/x86/util/intel-bts.c
+++ b/tools/perf/arch/x86/util/intel-bts.c
@@ -113,6 +113,11 @@ static int intel_bts_recording_options(struct auxtrace_record *itr,
const struct perf_cpu_map *cpus = evlist->core.cpus;
bool privileged = perf_event_paranoid_check(-1);

+ if (opts->auxtrace_sample_mode) {
+ pr_err("Intel BTS does not support AUX area sampling\n");
+ return -EINVAL;
+ }
+
btsr->evlist = evlist;
btsr->snapshot_mode = opts->auxtrace_snapshot_mode;

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