* Andrii Nakryiko <andrii@xxxxxxxxxx> wrote:
> Add AMD-specific implementation of perf_snapshot_branch_stack static call that
> allows LBR capture from arbitrary points in the kernel. This is utilized by
> BPF programs. See patch #3 for all the details.
>
> Patches #1 and #2 are preparatory steps to ensure LBR freezing is completely
> inlined and have no branches, to minimize LBR snapshot contamination.
>
> Patch #4 removes an artificial restriction on perf events with LBR enabled.
>
> v4->v5:
> - rebased on top of perf/urgent branch to resolve conflicts with
> 598c2fafc06f ("perf/x86/amd/lbr: Use freeze based on availability").
>
> Andrii Nakryiko (4):
> perf/x86/amd: ensure amd_pmu_core_disable_all() is always inlined
> perf/x86/amd: avoid taking branches before disabling LBR
> perf/x86/amd: support capturing LBR from software events
> perf/x86/amd: don't reject non-sampling events with configured LBR
>
> arch/x86/events/amd/core.c | 37 +++++++++++++++++++++++++++++++++++-
> arch/x86/events/amd/lbr.c | 13 +------------
> arch/x86/events/perf_event.h | 13 +++++++++++++
> 3 files changed, 50 insertions(+), 13 deletions(-)
Applied to tip:perf/core for a v6.10 merge, thanks a lot Andrii!
Ingo
