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 ...
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| @@ -1014,6 +1014,7 @@ static void mm_init_uprobes_state(struct mm_struct *mm) · 1013 unmodified lines | |||
| 1014 | { | 1014 | { |
| 1015 | #ifdef CONFIG_UPROBES | 1015 | #ifdef CONFIG_UPROBES |
| 1016 | mm->uprobes_state.xol_area = NULL; | 1016 | mm->uprobes_state.xol_area = NULL; |
| 1017 | arch_uprobe_init_state(mm); | ||
| 1017 | #endif | 1018 | #endif |
| 1018 | } | 1019 | } |
| 1019 | 1020 | ||