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Subject[PATCH 0/6] Add sample_flags to improve the perf_sample_data struct
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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

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