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authorKan Liang <kan.liang@linux.intel.com>2022-09-01 16:09:58 +0300
committerPeter Zijlstra <peterz@infradead.org>2022-09-06 12:33:03 +0300
commite16fd7f2cb1a65555cfe76f983eaefb1eab7471f (patch)
tree15d1e498f5e4450ce74992febd66913fd258052c /arch/x86/events
parent2abe681da0a192ab850a5271d838a7817b469fca (diff)
downloadlinux-e16fd7f2cb1a65555cfe76f983eaefb1eab7471f.tar.xz
perf: Use sample_flags for data_src
Use the new sample_flags to indicate whether the data_src field is filled by the PMU driver. Remove the data_src field from the perf_sample_data_init() to minimize the number of cache lines touched. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20220901130959.1285717-6-kan.liang@linux.intel.com
Diffstat (limited to 'arch/x86/events')
-rw-r--r--arch/x86/events/intel/ds.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c
index 4c51118e4add..bde73d492889 100644
--- a/arch/x86/events/intel/ds.c
+++ b/arch/x86/events/intel/ds.c
@@ -1535,8 +1535,10 @@ static void setup_pebs_fixed_sample_data(struct perf_event *event,
/*
* data.data_src encodes the data source
*/
- if (sample_type & PERF_SAMPLE_DATA_SRC)
+ if (sample_type & PERF_SAMPLE_DATA_SRC) {
data->data_src.val = get_data_src(event, pebs->dse);
+ data->sample_flags |= PERF_SAMPLE_DATA_SRC;
+ }
/*
* We must however always use iregs for the unwinder to stay sane; the
@@ -1770,8 +1772,10 @@ static void setup_pebs_adaptive_sample_data(struct perf_event *event,
data->sample_flags |= PERF_SAMPLE_WEIGHT_TYPE;
}
- if (sample_type & PERF_SAMPLE_DATA_SRC)
+ if (sample_type & PERF_SAMPLE_DATA_SRC) {
data->data_src.val = get_data_src(event, meminfo->aux);
+ data->sample_flags |= PERF_SAMPLE_DATA_SRC;
+ }
if (sample_type & PERF_SAMPLE_ADDR_TYPE)
data->addr = meminfo->address;