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authorNamhyung Kim <namhyung@kernel.org>2021-06-29 21:30:58 -0700
committerArnaldo Carvalho de Melo <acme@redhat.com>2021-07-05 14:16:57 -0300
commit892ba7f18621a02af4428c58d97451f64685dba4 (patch)
treeefb6569d529cc3cfc603f3a56ffbbf0851e208cc
parenta180bd1d7e16173d965b263c5a536aa40afa2a2a (diff)
perf report: Fix --task and --stat with pipe input
Current 'perf report' fails to process a pipe input when --task or --stat options are used. This is because they reset all the tool callbacks and fails to find a matching event for a sample. When pipe input is used, the event info is passed via ATTR records so it needs to handle that operation. Otherwise the following error occurs. Note, -14 (= -EFAULT) comes from evlist__parse_sample(): # perf record -a -o- sleep 1 | perf report -i- --stat Can't parse sample, err = -14 0x271044 [0x38]: failed to process type: 9 Error: failed to process sample # Committer testing: Before: $ perf record -o- sleep 1 | perf report -i- --stat Can't parse sample, err = -14 [ perf record: Woken up 1 times to write data ] 0x1350 [0x30]: failed to process type: 9 Error: failed to process sample [ perf record: Captured and wrote 0.000 MB - ] $ After: $ perf record -o- sleep 1 | perf report -i- --stat [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.000 MB - ] Aggregated stats: TOTAL events: 41 COMM events: 2 ( 4.9%) EXIT events: 1 ( 2.4%) SAMPLE events: 9 (22.0%) MMAP2 events: 4 ( 9.8%) ATTR events: 1 ( 2.4%) FINISHED_ROUND events: 1 ( 2.4%) THREAD_MAP events: 1 ( 2.4%) CPU_MAP events: 1 ( 2.4%) EVENT_UPDATE events: 1 ( 2.4%) TIME_CONV events: 1 ( 2.4%) FEATURE events: 19 (46.3%) cycles:uhH stats: SAMPLE events: 9 $ Fixes: a4a4d0a7a2b20f78 ("perf report: Add --stats option to display quick data statistics") Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210630043058.1131295-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r--tools/perf/builtin-report.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index bc5c393021dc..8639bbe0969d 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -729,9 +729,14 @@ static int count_sample_event(struct perf_tool *tool __maybe_unused,
return 0;
}
+static int process_attr(struct perf_tool *tool __maybe_unused,
+ union perf_event *event,
+ struct evlist **pevlist);
+
static void stats_setup(struct report *rep)
{
memset(&rep->tool, 0, sizeof(rep->tool));
+ rep->tool.attr = process_attr;
rep->tool.sample = count_sample_event;
rep->tool.no_warn = true;
}
@@ -753,6 +758,7 @@ static void tasks_setup(struct report *rep)
rep->tool.mmap = perf_event__process_mmap;
rep->tool.mmap2 = perf_event__process_mmap2;
}
+ rep->tool.attr = process_attr;
rep->tool.comm = perf_event__process_comm;
rep->tool.exit = perf_event__process_exit;
rep->tool.fork = perf_event__process_fork;