Messages in this thread | | | From | kan.liang@linux ... | Subject | [PATCH 0/6] Add sample_flags to improve the perf_sample_data struct | Date | Wed, 31 Aug 2022 07:55:08 -0700 |
| |
From: Kan Liang <kan.liang@linux.intel.com>
The patch series is to fix PEBS timestamps overwritten and improve the perf_sample_data struct. The detailed discussion can be found at https://lore.kernel.org/lkml/YwXvGe4%2FQdgGYOKJ@worktop.programming.kicks-ass.net/
The patch series has two changes compared with the suggestions in the above discussion. - Only clear the sample flags for the perf_prepare_sample(). The __perf_event_header__init_id is shared between perf_prepare_sample() (used by PERF_RECORD_SAMPLE) and perf_event_header__init_id() (used by other PERF_RECORD_* event type). The sample data is only available for the PERF_RECORD_SAMPLE. - The CALLCHAIN_EARLY hack is still required for the BPF, especially perf_event_set_bpf_handler(). The sample data is not available when the function is invoked.
Kan Liang (6): perf: Add sample_flags to indicate the PMU-filled sample data perf/x86/intel/pebs: Fix PEBS timestamps overwritten perf: Use sample_flags for branch stack perf: Use sample_flags for weight perf: Use sample_flags for data_src perf: Use sample_flags for txn
arch/powerpc/perf/core-book3s.c | 10 ++++++--- arch/x86/events/core.c | 4 +++- arch/x86/events/intel/core.c | 4 +++- arch/x86/events/intel/ds.c | 39 ++++++++++++++++++++++++--------- include/linux/perf_event.h | 15 ++++++------- kernel/events/core.c | 33 +++++++++++++++++++--------- 6 files changed, 72 insertions(+), 33 deletions(-)
-- 2.35.1
| |