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| author | Namhyung Kim <namhyung@kernel.org> | 2023-01-18 09:05:54 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-01-18 13:57:19 +0300 |
| commit | 0a9081cf0a11770f6b0affd377db8caa3ec4c793 (patch) | |
| tree | 3a740abf38035bbde0d715718d2eb2c12f15eefe /include/linux/perf_event.h | |
| parent | 31046500c1864b8ab25d1b9846ad10aa3f7b1821 (diff) | |
| download | linux-0a9081cf0a11770f6b0affd377db8caa3ec4c793.tar.xz | |
perf/core: Add perf_sample_save_raw_data() helper
When we save the raw_data to the perf sample data, we need to update
the sample flags and the dynamic size. To make sure this is done
consistently, add the perf_sample_save_raw_data() helper and convert
all call sites.
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230118060559.615653-4-namhyung@kernel.org
Diffstat (limited to 'include/linux/perf_event.h')
| -rw-r--r-- | include/linux/perf_event.h | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index a9419608402b..569dfac5887f 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -95,6 +95,11 @@ struct perf_raw_record { u32 size; }; +static __always_inline bool perf_raw_frag_last(const struct perf_raw_frag *frag) +{ + return frag->pad < sizeof(u64); +} + /* * branch stack layout: * nr: number of taken branches stored in entries[] @@ -1182,6 +1187,29 @@ static inline void perf_sample_save_callchain(struct perf_sample_data *data, data->sample_flags |= PERF_SAMPLE_CALLCHAIN; } +static inline void perf_sample_save_raw_data(struct perf_sample_data *data, + struct perf_raw_record *raw) +{ + struct perf_raw_frag *frag = &raw->frag; + u32 sum = 0; + int size; + + do { + sum += frag->size; + if (perf_raw_frag_last(frag)) + break; + frag = frag->next; + } while (1); + + size = round_up(sum + sizeof(u32), sizeof(u64)); + raw->size = size - sizeof(u32); + frag->pad = raw->size - sum; + + data->raw = raw; + data->dyn_size += size; + data->sample_flags |= PERF_SAMPLE_RAW; +} + /* * Clear all bitfields in the perf_branch_entry. * The to and from fields are not cleared because they are @@ -1690,11 +1718,6 @@ extern void perf_restore_debug_store(void); static inline void perf_restore_debug_store(void) { } #endif -static __always_inline bool perf_raw_frag_last(const struct perf_raw_frag *frag) -{ - return frag->pad < sizeof(u64); -} - #define perf_output_put(handle, x) perf_output_copy((handle), &(x), sizeof(x)) struct perf_pmu_events_attr { |