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perf lock: Correct field name "flags"

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The tracepoint "lock:lock_acquire" contains field "flags" but not
"flag".  Current code wrongly retrieves value from field "flag" and it
always gets zero for the value, thus "perf lock" doesn't report the
correct result.

This patch replaces the field name "flag" with "flags", so can read out
the correct flags for locking.

Fixes: e4cef1f65061 ("perf lock: Fix state machine to recognize lock sequence")
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Link: https://lore.kernel.org/r/20201104094229.17509-1-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Leo Yan 2020-11-04 17:42:28 +08:00 committed by Arnaldo Carvalho de Melo
parent af5043c89a
commit e24a87b54e
1 changed files with 1 additions and 1 deletions
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2
tools/perf/builtin-lock.c
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@ -406,7 +406,7 @@ static int report_lock_acquire_event(struct evsel *evsel,
struct lock_seq_stat *seq;
const char *name = evsel__strval(evsel, sample, "name");
u64 tmp = evsel__intval(evsel, sample, "lockdep_addr");
int flag = evsel__intval(evsel, sample, "flag");
int flag = evsel__intval(evsel, sample, "flags");
memcpy(&addr, &tmp, sizeof(void *));