aboutsummaryrefslogtreecommitdiff
path: root/arch/powerpc/perf
diff options
context:
space:
mode:
authorPeter Zijlstra2020-10-30 15:50:32 +0100
committerPeter Zijlstra2020-11-09 18:12:33 +0100
commit267fb27352b6fc9fdbad753127a239f75618ecbc (patch)
tree2f99dd2dedf21e53d329e16cdb615e2c234202bb /arch/powerpc/perf
parent7bdb157cdebbf95a1cd94ed2e01b338714075d00 (diff)
perf: Reduce stack usage of perf_output_begin()
__perf_output_begin() has an on-stack struct perf_sample_data in the unlikely case it needs to generate a LOST record. However, every call to perf_output_begin() must already have a perf_sample_data on-stack. Reported-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20201030151954.985416146@infradead.org
Diffstat (limited to 'arch/powerpc/perf')
-rw-r--r--arch/powerpc/perf/imc-pmu.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/perf/imc-pmu.c b/arch/powerpc/perf/imc-pmu.c
index 9ed4fcccf8a9..7b25548ec42b 100644
--- a/arch/powerpc/perf/imc-pmu.c
+++ b/arch/powerpc/perf/imc-pmu.c
@@ -1336,7 +1336,7 @@ static void dump_trace_imc_data(struct perf_event *event)
/* If this is a valid record, create the sample */
struct perf_output_handle handle;
- if (perf_output_begin(&handle, event, header.size))
+ if (perf_output_begin(&handle, &data, event, header.size))
return;
perf_output_sample(&handle, &header, &data, event);