Currently, perf-stat with armv8_pmu events with a workload is broken.
This patch set just fixes that.
Before the patch set:
[root at localhost hulk]# tools/perf/perf stat -e armv8_pmuv3_0/ll_cache_rd/,armv8_pmuv3_0/ll_cache_miss_rd/ ls > /dev/null
Segmentation fault
After the patch set:
[root at localhost hulk]# tools/perf/perf stat -e armv8_pmuv3_0/ll_cache_rd/,armv8_pmuv3_0/ll_cache_miss_rd/ ls > /dev/null
Performance counter stats for 'ls':
39,882 armv8_pmuv3_0/ll_cache_rd/
9,639 armv8_pmuv3_0/ll_cache_miss_rd/
0.001416690 seconds time elapsed
0.001469000 seconds user
0.000000000 seconds sys
Wei Li (2):
perf stat: Fix segfault when counting armv8 PMU events
perf stat: Unbreak perf stat with armv8 PMU events
tools/lib/perf/include/internal/evlist.h | 1 +
tools/perf/builtin-stat.c | 37 ++++++++++++++++--------
tools/perf/util/evlist.c | 23 ++++++++++++++-
3 files changed, 48 insertions(+), 13 deletions(-)
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2.17.1