On Thu, Sep 1, 2022 at 6:10 AM <kan.liang@linux.intel.com> wrote:
>
> From: Kan Liang <kan.liang@linux.intel.com>
>
> Changes since V1:
> - Update the AMD LBR code in patch 3
>
> 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
Maybe we can get rid of perf_sample_data_init() completely.
But it could be done later, so
Acked-by: Namhyung Kim <namhyung@kernel.org>
Thanks,
Namhyung
>
> arch/powerpc/perf/core-book3s.c | 10 ++++++---
> arch/x86/events/amd/core.c | 4 +++-
> 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 | 30 ++++++++++++++++++-------
> 7 files changed, 74 insertions(+), 32 deletions(-)
>
> --
> 2.35.1
>