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Message-ID: <aNak0jUWA0JvVEMX@gmail.com>
Date: Fri, 26 Sep 2025 16:36:02 +0200
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 v6.18
Linus,
Please pull the latest perf/core Git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf-core-2025-09-26
# HEAD: 6d48436560e91be858158e227f21aab71698814e selftests/bpf: Fix uprobe_sigill test for uprobe syscall error value
Performance events updates for v6.18:
Core perf code updates:
- Convert mmap() related reference counts to refcount_t. This
is in reaction to the recently fixed refcount bugs, which
could have been detected earlier and could have mitigated
the bug somewhat. (Thomas Gleixner, Peter Zijlstra)
- Clean up and simplify the callchain code, in preparation
for sframes. (Steven Rostedt, Josh Poimboeuf)
Uprobes updates:
- Add support to optimize usdt probes on x86-64, which
gives a substantial speedup. (Jiri Olsa)
- Cleanups and fixes on x86 (Peter Zijlstra)
PMU driver updates:
- Various optimizations and fixes to the Intel PMU driver
(Dapeng Mi)
Misc cleanups and fixes:
- Remove redundant __GFP_NOWARN (Qianfeng Rong)
Thanks,
Ingo
------------------>
Dapeng Mi (6):
perf/x86/intel: Use early_initcall() to hook bts_init()
perf/x86/intel: Fix IA32_PMC_x_CFG_B MSRs access error
perf/x86: Add PERF_CAP_PEBS_TIMING_INFO flag
perf/x86/intel: Change macro GLOBAL_CTRL_EN_PERF_METRICS to BIT_ULL(48)
perf/x86/intel: Add ICL_FIXED_0_ADAPTIVE bit into INTEL_FIXED_BITS_MASK
perf/x86: Print PMU counters bitmap in x86_pmu_show_pmu_cap()
Jiri Olsa (24):
uprobes: Remove breakpoint in unapply_uprobe under mmap_write_lock
uprobes: Rename arch_uretprobe_trampoline function
uprobes: Make copy_from_page global
uprobes: Add uprobe_write function
uprobes: Add nbytes argument to uprobe_write
uprobes: Add is_register argument to uprobe_write and uprobe_write_opcode
uprobes: Add do_ref_ctr argument to uprobe_write function
uprobes/x86: Add mapping for optimized uprobe trampolines
uprobes/x86: Add uprobe syscall to speed up uprobe
uprobes/x86: Add support to optimize uprobes
selftests/bpf: Import usdt.h from libbpf/usdt project
selftests/bpf: Reorg the uprobe_syscall test function
selftests/bpf: Rename uprobe_syscall_executed prog to test_uretprobe_multi
selftests/bpf: Add uprobe/usdt syscall tests
selftests/bpf: Add hit/attach/detach race optimized uprobe test
selftests/bpf: Add uprobe syscall sigill signal test
selftests/bpf: Add optimized usdt variant for basic usdt test
selftests/bpf: Add uprobe_regs_equal test
selftests/bpf: Change test_uretprobe_regs_change for uprobe and uretprobe
selftests/bpf: Fix uprobe syscall shadow stack test
seccomp: passthrough uprobe systemcall without filtering
selftests/seccomp: validate uprobe syscall passes through seccomp
uprobes/x86: Return error from uprobe syscall when not called from trampoline
selftests/bpf: Fix uprobe_sigill test for uprobe syscall error value
Josh Poimboeuf (4):
perf: Remove get_perf_callchain() init_nr argument
perf: Have get_perf_callchain() return NULL if crosstask and user are set
perf: Simplify get_perf_callchain() user logic
perf: Skip user unwind if the task is a kernel thread
Peter Zijlstra (17):
perf: Move perf_mmap_calc_limits() into both rb and aux branches
perf: Merge consecutive conditionals in perf_mmap()
perf: Move common code into both rb and aux branches
perf: Remove redundant aux_unlock label
perf: Use guard() for aux_mutex in perf_mmap()
perf: Reflow to get rid of aux_success label
perf: Split out the AUX buffer allocation
perf: Make RB allocation branch self sufficient
perf: Split out the RB allocation
perf: Use scoped_guard() for mmap_mutex in perf_mmap()
perf: Identify the 0->1 transition for event::mmap_count
uprobes/x86: Add struct uretprobe_syscall_args
uprobes/x86: Optimize is_optimize()
uprobes/x86: Accept more NOP forms
uprobes/x86: Fix uprobe syscall vs shadow stack
uprobes/x86: Make asm style consistent
uprobes/x86: Add SLS mitigation to the trampolines
Qianfeng Rong (1):
uprobes: Remove redundant __GFP_NOWARN
Steven Rostedt (1):
perf: Use current->flags & PF_KTHREAD|PF_USER_WORKER instead of current->mm == NULL
Thomas Gleixner (4):
perf: Remove redundant condition for AUX buffer size
perf: Split out mlock limit handling
perf: Split out VM accounting
perf: Convert mmap() refcounts to refcount_t
arch/arm/probes/uprobes/core.c | 2 +-
arch/x86/entry/syscalls/syscall_64.tbl | 1 +
arch/x86/events/core.c | 16 +-
arch/x86/events/intel/bts.c | 2 +-
arch/x86/events/intel/core.c | 21 +-
arch/x86/include/asm/msr-index.h | 14 +-
arch/x86/include/asm/perf_event.h | 8 +-
arch/x86/include/asm/shstk.h | 4 +
arch/x86/include/asm/uprobes.h | 7 +
arch/x86/kernel/shstk.c | 40 ++
arch/x86/kernel/uprobes.c | 635 ++++++++++++++++++++-
arch/x86/kvm/pmu.h | 2 +-
include/linux/perf_event.h | 4 +-
include/linux/syscalls.h | 2 +
include/linux/uprobes.h | 20 +-
kernel/bpf/stackmap.c | 4 +-
kernel/events/callchain.c | 40 +-
kernel/events/core.c | 369 ++++++------
kernel/events/internal.h | 4 +-
kernel/events/ring_buffer.c | 2 +-
kernel/events/uprobes.c | 102 +++-
kernel/fork.c | 1 +
kernel/seccomp.c | 32 +-
kernel/sys_ni.c | 1 +
tools/arch/x86/include/asm/msr-index.h | 14 +-
.../selftests/bpf/prog_tests/uprobe_syscall.c | 484 ++++++++++++++--
tools/testing/selftests/bpf/prog_tests/usdt.c | 38 +-
tools/testing/selftests/bpf/progs/uprobe_syscall.c | 4 +-
.../selftests/bpf/progs/uprobe_syscall_executed.c | 60 +-
.../testing/selftests/bpf/test_kmods/bpf_testmod.c | 11 +-
tools/testing/selftests/bpf/usdt.h | 545 ++++++++++++++++++
tools/testing/selftests/seccomp/seccomp_bpf.c | 107 +++-
32 files changed, 2221 insertions(+), 375 deletions(-)
create mode 100644 tools/testing/selftests/bpf/usdt.h
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