Messages in this thread | | | Date | Fri, 7 Oct 2022 10:00:36 +0200 | From | Ingo Molnar <> | Subject | [GIT PULL] perf event updates for v6.1 |
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Linus,
Please pull the latest perf/core git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf-core-2022-10-07
# HEAD: 82aad7ff7ac25c8cf09d491ae23b9823f1901486 perf/hw_breakpoint: Annotate tsk->perf_event_mutex vs ctx->mutex
Perf events updates for v6.1:
- PMU driver updates:
- Add AMD Last Branch Record Extension Version 2 (LbrExtV2) feature support for Zen 4 processors.
- Extend the perf ABI to provide branch speculation information, if available, and use this on CPUs that have it (eg. LbrExtV2).
- Improve Intel PEBS TSC timestamp handling & integration.
- Add Intel Raptor Lake S CPU support.
- Add 'perf mem' and 'perf c2c' memory profiling support on AMD CPUs by utilizing IBS tagged load/store samples.
- Clean up & optimize various x86 PMU details.
- HW breakpoints:
- Big rework to optimize the code for systems with hundreds of CPUs and thousands of breakpoints:
- Replace the nr_bp_mutex global mutex with the bp_cpuinfo_sem per-CPU rwsem that is read-locked during most of the key operations.
- Improve the O(#cpus * #tasks) logic in toggle_bp_slot() and fetch_bp_busy_slots().
- Apply micro-optimizations & cleanups.
- Misc cleanups & enhancements.
- NOTE: When merged with your latest tree, there will be a new conflict in lib/Kconfig.debug - it's just a context conflict due to the HW_BREAKPOINT_KUNIT_TEST addition from the perf tree clashing with the recent addition of FORTIFY_KUNIT_TEST:
upstream: 875bfd5276f3 ("fortify: Add KUnit test for FORTIFY_SOURCE internals") perf tree: 724c299c6a0e ("perf/hw_breakpoint: Add KUnit test for constraints accounting")
Thanks,
Ingo
------------------> Anshuman Khandual (9): perf: Add system error and not in transaction branch types perf: Extend branch type classification perf: Capture branch privilege information perf: Add PERF_BR_NEW_ARCH_[N] map for BRBE on arm64 platform perf: Consolidate branch sample filter helpers perf/core: Expand PERF_EVENT_FLAG_ARCH perf/core: Assert PERF_EVENT_FLAG_ARCH does not overlap with generic flags arm64/perf: Assert all platform event flags are within PERF_EVENT_FLAG_ARCH x86/perf: Assert all platform event flags are within PERF_EVENT_FLAG_ARCH
Jiri Olsa (1): bpf: Check flags for branch stack in bpf_read_branch_records helper
Jules Irenge (1): perf/core: Convert snprintf() to scnprintf()
Kan Liang (11): 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 perf/x86/intel: Optimize FIXED_CTR_CTRL access perf/x86: Add new Raptor Lake S support perf/x86/msr: Add new Raptor Lake S support perf/x86/cstate: Add new Raptor Lake S support perf/x86/uncore: Add new Raptor Lake S support
Marco Elver (15): perf/hw_breakpoint: Add KUnit test for constraints accounting perf/hw_breakpoint: Provide hw_breakpoint_is_used() and use in test perf/hw_breakpoint: Clean up headers perf/hw_breakpoint: Optimize list of per-task breakpoints perf/hw_breakpoint: Mark data __ro_after_init perf/hw_breakpoint: Optimize constant number of breakpoint slots perf/hw_breakpoint: Make hw_breakpoint_weight() inlinable perf/hw_breakpoint: Remove useless code related to flexible breakpoints powerpc/hw_breakpoint: Avoid relying on caller synchronization locking/percpu-rwsem: Add percpu_is_write_locked() and percpu_is_read_locked() perf/hw_breakpoint: Reduce contention with large number of tasks perf/hw_breakpoint: Introduce bp_slots_histogram perf/hw_breakpoint: Optimize max_bp_pinned_slots() for CPU-independent task targets perf/hw_breakpoint: Optimize toggle_bp_slot() for CPU-independent task targets perf, hw_breakpoint: Fix use-after-free if perf_event_open() fails
Namhyung Kim (5): perf: Use sample_flags for callchain perf/bpf: Always use perf callchains if exist perf: Kill __PERF_SAMPLE_CALLCHAIN_EARLY perf: Use sample_flags for addr perf: Use sample_flags for raw_data
Peter Zijlstra (11): perf: Add a few assertions perf/x86: Add two more x86_pmu methods perf/x86/intel: Move the topdown stuff into the intel driver perf/x86: Change x86_pmu::limit_period signature perf/x86: Add a x86_pmu::limit_period static_call perf/x86/intel: Remove x86_pmu::set_topdown_event_period perf/x86/intel: Remove x86_pmu::update_topdown_event perf/x86/p4: Remove perfctr_second_write quirk perf: Fix lockdep_assert_event_ctx() perf: Fix pmu_filter_match() perf/hw_breakpoint: Annotate tsk->perf_event_mutex vs ctx->mutex
Ravi Bangoria (7): perf/mem: Introduce PERF_MEM_LVLNUM_{EXTN_MEM|IO} perf/x86/amd: Add IBS OP_DATA2 DataSrc bit definitions perf/x86/amd: Support PERF_SAMPLE_DATA_SRC perf/x86/amd: Support PERF_SAMPLE_{WEIGHT|WEIGHT_STRUCT} perf/x86/amd: Support PERF_SAMPLE_ADDR perf/x86/amd: Support PERF_SAMPLE_PHY_ADDR perf/uapi: Define PERF_MEM_SNOOPX_PEER in kernel header file
Sandipan Das (13): perf/x86/amd/brs: Move feature-specific functions perf/x86/amd/core: Refactor branch attributes perf/x86/amd/core: Add generic branch record interfaces x86/cpufeatures: Add LbrExtV2 feature bit perf/x86/amd/lbr: Detect LbrExtV2 support perf/x86/amd/lbr: Add LbrExtV2 branch record support perf/x86/amd/lbr: Add LbrExtV2 hardware branch filter support perf/x86: Move branch classifier perf/x86/amd/lbr: Add LbrExtV2 software branch filter support perf/x86: Make branch classifier fusion-aware perf/x86/amd/lbr: Use fusion-aware branch classifier perf/core: Add speculation info to branch entries perf/x86/amd/lbr: Add LbrExtV2 branch speculation info support
Stephane Eranian (2): perf/x86/utils: Fix uninitialized var in get_branch_type() perf/x86/amd/lbr: Adjust LBR regardless of filtering
arch/powerpc/kernel/hw_breakpoint.c | 53 ++- arch/powerpc/perf/core-book3s.c | 10 +- arch/s390/kernel/perf_cpum_cf.c | 1 + arch/s390/kernel/perf_pai_crypto.c | 1 + arch/sh/include/asm/hw_breakpoint.h | 5 +- arch/x86/events/Makefile | 2 +- arch/x86/events/amd/Makefile | 2 +- arch/x86/events/amd/brs.c | 69 +++- arch/x86/events/amd/core.c | 210 ++++++------ arch/x86/events/amd/ibs.c | 360 ++++++++++++++++++- arch/x86/events/amd/lbr.c | 439 ++++++++++++++++++++++++ arch/x86/events/core.c | 61 ++-- arch/x86/events/intel/core.c | 101 ++++-- arch/x86/events/intel/cstate.c | 1 + arch/x86/events/intel/ds.c | 55 ++- arch/x86/events/intel/lbr.c | 273 --------------- arch/x86/events/intel/p4.c | 37 +- arch/x86/events/intel/uncore.c | 1 + arch/x86/events/msr.c | 1 + arch/x86/events/perf_event.h | 130 +++++-- arch/x86/events/perf_event_flags.h | 22 ++ arch/x86/events/utils.c | 251 ++++++++++++++ arch/x86/include/asm/amd-ibs.h | 16 + arch/x86/include/asm/cpufeatures.h | 2 +- arch/x86/include/asm/hw_breakpoint.h | 5 +- arch/x86/include/asm/msr-index.h | 5 + arch/x86/include/asm/perf_event.h | 3 +- arch/x86/kernel/cpu/scattered.c | 1 + drivers/perf/arm_spe_pmu.c | 4 +- include/linux/hw_breakpoint.h | 4 +- include/linux/percpu-rwsem.h | 6 + include/linux/perf/arm_pmu.h | 9 +- include/linux/perf_event.h | 77 ++++- include/uapi/linux/perf_event.h | 57 ++- kernel/bpf/stackmap.c | 4 +- kernel/events/Makefile | 1 + kernel/events/core.c | 88 +++-- kernel/events/hw_breakpoint.c | 648 ++++++++++++++++++++++++++--------- kernel/events/hw_breakpoint_test.c | 333 ++++++++++++++++++ kernel/locking/percpu-rwsem.c | 6 + kernel/trace/bpf_trace.c | 3 + lib/Kconfig.debug | 10 + 42 files changed, 2613 insertions(+), 754 deletions(-) create mode 100644 arch/x86/events/amd/lbr.c create mode 100644 arch/x86/events/perf_event_flags.h create mode 100644 arch/x86/events/utils.c create mode 100644 kernel/events/hw_breakpoint_test.c
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