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Message-ID: <Z96FtpuyGXHbvKKS@gmail.com>
Date: Sat, 22 Mar 2025 10:41:10 +0100
From: Ingo Molnar <mingo@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, Peter Zijlstra <peterz@...radead.org>,
Arnaldo Carvalho de Melo <acme@...hat.com>,
Jiri Olsa <jolsa@...nel.org>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Mark Rutland <mark.rutland@....com>,
Namhyung Kim <namhyung@...nel.org>,
linux-perf-users@...r.kernel.org
Subject: [GIT PULL] Performance events updates for v6.15
Linus,
Please pull the latest perf/core Git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf-core-2025-03-22
# HEAD: 12e766d16814808b6a581597cef6ce9fc029e917 perf: Fix __percpu annotation
Performance events updates for v6.15:
Core:
- Move perf_event sysctls into kernel/events/ (Joel Granados)
- Use POLLHUP for pinned events in error (Namhyung Kim)
- Avoid the read if the count is already updated (Peter Zijlstra)
- Allow the EPOLLRDNORM flag for poll (Tao Chen)
- locking/percpu-rwsem: Add guard support (Peter Zijlstra)
[ NOTE: this got (mis-)merged into the perf tree due to related work. ]
perf_pmu_unregister() related improvements: (Peter Zijlstra)
- Simplify the perf_event_alloc() error path
- Simplify the perf_pmu_register() error path
- Simplify perf_pmu_register()
- Simplify perf_init_event()
- Simplify perf_event_alloc()
- Merge struct pmu::pmu_disable_count into struct perf_cpu_pmu_context::pmu_disable_count
- Add this_cpc() helper
- Introduce perf_free_addr_filters()
- Robustify perf_event_free_bpf_prog()
- Simplify the perf_mmap() control flow
- Further simplify perf_mmap()
- Remove retry loop from perf_mmap()
- Lift event->mmap_mutex in perf_mmap()
- Detach 'struct perf_cpu_pmu_context' and 'struct pmu' lifetimes
- Fix perf_mmap() failure path
Uprobes:
- Harden x86 uretprobe syscall trampoline check (Jiri Olsa)
- Remove redundant spinlock in uprobe_deny_signal() (Liao Chang)
- Remove the spinlock within handle_singlestep() (Liao Chang)
x86 Intel PMU enhancements:
- Support PEBS counters snapshotting (Kan Liang)
- Fix intel_pmu_read_event() (Kan Liang)
- Extend per event callchain limit to branch stack (Kan Liang)
- Fix system-wide LBR profiling (Kan Liang)
- Allocate bts_ctx only if necessary (Li RongQing)
- Apply static call for drain_pebs (Peter Zijlstra)
x86 AMD PMU enhancements: (Ravi Bangoria)
- Remove pointless sample period check
- Fix ->config to sample period calculation for OP PMU
- Fix perf_ibs_op.cnt_mask for CurCnt
- Don't allow freq mode event creation through ->config interface
- Add PMU specific minimum period
- Add ->check_period() callback
- Ceil sample_period to min_period
- Add support for OP Load Latency Filtering
- Update DTLB/PageSize decode logic
Hardware breakpoints:
- Return EOPNOTSUPP for unsupported breakpoint type (Saket Kumar Bhaskar)
Hardlockup detector improvements: (Li Huafei)
- perf_event memory leak
- Warn if watchdog_ev is leaked
Fixes and cleanups:
- Misc fixes and cleanups (Andy Shevchenko, Kan Liang, Peter Zijlstra,
Ravi Bangoria, Thorsten Blum, XieLudan)
Thanks,
Ingo
------------------>
Andy Shevchenko (1):
x86/events/amd/iommu: Increase IOMMU_NAME_SIZE
Jiri Olsa (1):
uprobes/x86: Harden uretprobe syscall trampoline check
Joel Granados (1):
perf/core: Move perf_event sysctls into kernel/events
Kan Liang (9):
perf/x86/intel: Avoid disable PMU if !cpuc->enabled in sample read
perf/x86/intel: Support PEBS counters snapshotting
perf: Extend per event callchain limit to branch stack
perf: Save PMU specific data in task_struct
perf: attach/detach PMU specific data
perf: Supply task information to sched_task()
perf/x86/lbr: Fix shorter LBRs call stacks for the system-wide mode
perf/x86: Remove swap_task_ctx()
perf: Clean up pmu specific data
Li Huafei (2):
watchdog/hardlockup/perf: Fix perf_event memory leak
watchdog/hardlockup/perf: Warn if watchdog_ev is leaked
Li RongQing (2):
perf/x86/intel/bts: Allocate bts_ctx only if necessary
perf/x86/intel/bts: Check if bts_ctx is allocated when calling BTS functions
Liao Chang (2):
uprobes: Remove redundant spinlock in uprobe_deny_signal()
uprobes: Remove the spinlock within handle_singlestep()
Namhyung Kim (1):
perf/core: Use POLLHUP for pinned events in error
Peter Zijlstra (17):
perf/core: Simplify the perf_event_alloc() error path
perf/core: Simplify the perf_pmu_register() error path
perf/core: Simplify perf_pmu_register()
perf/core: Simplify perf_init_event()
perf/core: Simplify perf_event_alloc()
perf/core: Merge struct pmu::pmu_disable_count into struct perf_cpu_pmu_context::pmu_disable_count
perf/core: Add this_cpc() helper
perf/core: Introduce perf_free_addr_filters()
perf/bpf: Robustify perf_event_free_bpf_prog()
perf/core: Simplify the perf_mmap() control flow
perf/core: Further simplify perf_mmap()
perf/core: Remove retry loop from perf_mmap()
perf/core: Lift event->mmap_mutex in perf_mmap()
perf/core: Detach 'struct perf_cpu_pmu_context' and 'struct pmu' lifetimes
perf/core: Fix perf_mmap() failure path
perf/core: Clean up perf_try_init_event()
perf: Fix __percpu annotation
Peter Zijlstra (Intel) (3):
perf/x86/intel: Apply static call for drain_pebs
perf: Avoid the read if the count is already updated
locking/percpu-rwsem: Add guard support
Ravi Bangoria (11):
perf/amd/ibs: Remove IBS_{FETCH|OP}_CONFIG_MASK macros
perf/amd/ibs: Remove pointless sample period check
perf/amd/ibs: Fix ->config to sample period calculation for OP PMU
perf/amd/ibs: Fix perf_ibs_op.cnt_mask for CurCnt
perf/amd/ibs: Don't allow freq mode event creation through ->config interface
perf/amd/ibs: Add PMU specific minimum period
perf/amd/ibs: Add ->check_period() callback
perf/amd/ibs: Ceil sample_period to min_period
perf/amd/ibs: Add support for OP Load Latency Filtering
perf/amd/ibs: Update DTLB/PageSize decode logic
perf amd ibs: Sync arch/x86/include/asm/amd-ibs.h header with the kernel
Saket Kumar Bhaskar (1):
perf/hw_breakpoint: Return EOPNOTSUPP for unsupported breakpoint type
Tao Chen (1):
perf/ring_buffer: Allow the EPOLLRDNORM flag for poll
Thorsten Blum (2):
perf/x86: Annotate struct bts_buffer::buf with __counted_by()
perf/core: Remove optional 'size' arguments from strscpy() calls
XieLudan (1):
perf/core: Use sysfs_emit() instead of scnprintf()
arch/powerpc/perf/core-book3s.c | 8 +-
arch/s390/kernel/perf_pai_crypto.c | 3 +-
arch/s390/kernel/perf_pai_ext.c | 3 +-
arch/x86/events/amd/brs.c | 3 +-
arch/x86/events/amd/ibs.c | 206 ++++++-
arch/x86/events/amd/iommu.c | 2 +-
arch/x86/events/amd/lbr.c | 3 +-
arch/x86/events/core.c | 27 +-
arch/x86/events/intel/bts.c | 43 +-
arch/x86/events/intel/core.c | 123 ++--
arch/x86/events/intel/ds.c | 204 ++++++-
arch/x86/events/intel/lbr.c | 73 ++-
arch/x86/events/perf_event.h | 42 +-
arch/x86/events/perf_event_flags.h | 2 +-
arch/x86/include/asm/amd-ibs.h | 3 +-
arch/x86/include/asm/perf_event.h | 20 +
arch/x86/kernel/uprobes.c | 14 +-
include/linux/idr.h | 17 +
include/linux/nmi.h | 4 -
include/linux/percpu-rwsem.h | 8 +
include/linux/perf_event.h | 92 +--
include/linux/sched.h | 2 +
include/linux/uprobes.h | 3 +
include/uapi/linux/perf_event.h | 2 +
kernel/cpu.c | 5 -
kernel/events/callchain.c | 38 +-
kernel/events/core.c | 1062 ++++++++++++++++++++++------------
kernel/events/hw_breakpoint.c | 5 +-
kernel/events/ring_buffer.c | 3 +-
kernel/events/uprobes.c | 12 +-
kernel/sysctl.c | 64 --
kernel/watchdog.c | 25 -
kernel/watchdog_perf.c | 29 +-
tools/arch/x86/include/asm/amd-ibs.h | 3 +-
34 files changed, 1416 insertions(+), 737 deletions(-)
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