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)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----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=sVXH
-----END PGP SIGNATURE-----
Merge tag 'perf-core-2025-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull performance events updates from Ingo Molnar:
"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)"
* tag 'perf-core-2025-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (57 commits)
selftests/bpf: Fix uprobe_sigill test for uprobe syscall error value
uprobes/x86: Return error from uprobe syscall when not called from trampoline
perf: Skip user unwind if the task is a kernel thread
perf: Simplify get_perf_callchain() user logic
perf: Use current->flags & PF_KTHREAD|PF_USER_WORKER instead of current->mm == NULL
perf: Have get_perf_callchain() return NULL if crosstask and user are set
perf: Remove get_perf_callchain() init_nr argument
perf/x86: Print PMU counters bitmap in x86_pmu_show_pmu_cap()
perf/x86/intel: Add ICL_FIXED_0_ADAPTIVE bit into INTEL_FIXED_BITS_MASK
perf/x86/intel: Change macro GLOBAL_CTRL_EN_PERF_METRICS to BIT_ULL(48)
perf/x86: Add PERF_CAP_PEBS_TIMING_INFO flag
perf/x86/intel: Fix IA32_PMC_x_CFG_B MSRs access error
perf/x86/intel: Use early_initcall() to hook bts_init()
uprobes: Remove redundant __GFP_NOWARN
selftests/seccomp: validate uprobe syscall passes through seccomp
seccomp: passthrough uprobe systemcall without filtering
selftests/bpf: Fix uprobe syscall shadow stack test
selftests/bpf: Change test_uretprobe_regs_change for uprobe and uretprobe
selftests/bpf: Add uprobe_regs_equal test
selftests/bpf: Add optimized usdt variant for basic usdt test
...
e4dcbdff11