| Message ID | 20200716051130.4359-1-leo.yan@linaro.org (mailing list archive) |
|---|---|
| Headers | show |
| Series | arm64: perf: Proper cap_user_time* support | expand |
On Thu, 16 Jul 2020 13:11:23 +0800, Leo Yan wrote: > This patch set is rebased for Peter's patch set to support > cap_user_time/cap_user_time_short ABI for Arm64, and export Arm arch > timer counter related parameters from kernel to Perf tool. > > After get feedback from Ahmed, this patch set contains Ahmed's new patch > to refine sched clock data accessing with raw_read_seqcount_latch(). > > [...] Applied to will (for-next/perf), thanks! [1/7] sched_clock: Expose struct clock_read_data https://git.kernel.org/will/c/1b86abc1c645 [2/7] time/sched_clock: Use raw_read_seqcount_latch() https://git.kernel.org/will/c/aadd6e5caaac [3/7] arm64: perf: Implement correct cap_user_time https://git.kernel.org/will/c/950b74ddefc4 [4/7] arm64: perf: Only advertise cap_user_time for arch_timer https://git.kernel.org/will/c/279a811eb520 [5/7] perf: Add perf_event_mmap_page::cap_user_time_short ABI https://git.kernel.org/will/c/6c0246a4588d [6/7] arm64: perf: Add cap_user_time_short https://git.kernel.org/will/c/c8f9eb0d6eba [7/7] tools headers UAPI: Update tools's copy of linux/perf_event.h https://git.kernel.org/will/c/5271d915a99c Cheers,
This patch set is rebased for Peter's patch set to support cap_user_time/cap_user_time_short ABI for Arm64, and export Arm arch timer counter related parameters from kernel to Perf tool. After get feedback from Ahmed, this patch set contains Ahmed's new patch to refine sched clock data accessing with raw_read_seqcount_latch(). This patch set has been rebased on mainline kernel with the latest commit 994e99a96c9b ("Merge tag 'platform-drivers-x86-v5.8-2' of git://git.infradead.org/linux-platform-drivers-x86 into master"); it has been verified with Perf tool for Arm SPE timestamp enabling. Changes from v2: - Included Ahmed's patch to use raw_read_seqcount_latch() for sched_clock's seqcount latching; - Changed to use mul_u64_u32_shr() for converting counter to ns in Arm64's arch_perf_update_userpage() (PeterZ). Ahmed S. Darwish (1): time/sched_clock: Use raw_read_seqcount_latch() Leo Yan (1): tools headers UAPI: Update tools's copy of linux/perf_event.h Peter Zijlstra (5): sched_clock: Expose struct clock_read_data arm64: perf: Implement correct cap_user_time arm64: perf: Only advertise cap_user_time for arch_timer perf: Add perf_event_mmap_page::cap_user_time_short ABI arm64: perf: Add cap_user_time_short arch/arm64/kernel/perf_event.c | 57 ++++++++++++++++++++------- include/linux/sched_clock.h | 28 +++++++++++++ include/uapi/linux/perf_event.h | 23 +++++++++-- kernel/time/sched_clock.c | 41 ++++++------------- tools/include/uapi/linux/perf_event.h | 23 +++++++++-- 5 files changed, 124 insertions(+), 48 deletions(-)