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| author | Wei Li <liwei391@huawei.com> | 2020-02-14 15:26:51 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-02-18 10:13:29 -0300 |
| commit | 783fed2f35e2a6771c8dc6ee29b8c4b9930783ce (patch) | |
| tree | 8d16c5a5e8bdee2301feae7a28d2b9c25e2620e2 /tools/perf/arch | |
| parent | 2da4dd3d6973ffdfba4fa07f53240fda7ab22929 (diff) | |
| download | linux-783fed2f35e2a6771c8dc6ee29b8c4b9930783ce.tar.gz linux-783fed2f35e2a6771c8dc6ee29b8c4b9930783ce.tar.bz2 linux-783fed2f35e2a6771c8dc6ee29b8c4b9930783ce.zip | |
perf intel-bts: Fix endless record after being terminated
In __cmd_record(), when receiving SIGINT(ctrl + c), a 'done' flag will
be set and the event list will be disabled by evlist__disable() once.
While in auxtrace_record.read_finish(), the related events will be
enabled again, if they are continuous, the recording seems to be
endless.
If the intel_bts event is disabled, we don't enable it again here.
Note: This patch is NOT tested since i don't have such a machine with
intel_bts feature, but the code seems buggy same as arm-spe and
intel-pt.
Signed-off-by: Wei Li <liwei391@huawei.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Tan Xiaojun <tanxiaojun@huawei.com>
Cc: stable@vger.kernel.org # 5.4+
Link: http://lore.kernel.org/lkml/20200214132654.20395-3-adrian.hunter@intel.com
[ahunter: removed redundant 'else' after 'return']
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/arch')
| -rw-r--r-- | tools/perf/arch/x86/util/intel-bts.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/perf/arch/x86/util/intel-bts.c b/tools/perf/arch/x86/util/intel-bts.c index 27d9e214d068..39e363151ad7 100644 --- a/tools/perf/arch/x86/util/intel-bts.c +++ b/tools/perf/arch/x86/util/intel-bts.c @@ -420,9 +420,12 @@ static int intel_bts_read_finish(struct auxtrace_record *itr, int idx) struct evsel *evsel; evlist__for_each_entry(btsr->evlist, evsel) { - if (evsel->core.attr.type == btsr->intel_bts_pmu->type) + if (evsel->core.attr.type == btsr->intel_bts_pmu->type) { + if (evsel->disabled) + return 0; return perf_evlist__enable_event_idx(btsr->evlist, evsel, idx); + } } return -EINVAL; } |