diff options
| author | Mark Brown <broonie@kernel.org> | 2019-05-20 11:53:50 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-05-20 11:53:50 +0100 |
| commit | 1c7c3237c0cc4ad3c7b0df458290c8e2a652f178 (patch) | |
| tree | d5d027d4dbdae390c736a82e16c57966214e2c0a /include/linux/perf_event.h | |
| parent | bfa8130f50a63563eae10ef933fe01b50b3e87a0 (diff) | |
| parent | a188339ca5a396acc588e5851ed7e19f66b0ebd9 (diff) | |
| download | lwn-1c7c3237c0cc4ad3c7b0df458290c8e2a652f178.tar.gz lwn-1c7c3237c0cc4ad3c7b0df458290c8e2a652f178.zip | |
Merge tag 'v5.2-rc1' into asoc-5.3
Linux 5.2-rc1
Diffstat (limited to 'include/linux/perf_event.h')
| -rw-r--r-- | include/linux/perf_event.h | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 1f678f023850..0ab99c7b652d 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -30,6 +30,7 @@ struct perf_guest_info_callbacks { int (*is_in_guest)(void); int (*is_user_mode)(void); unsigned long (*get_guest_ip)(void); + void (*handle_intel_pt_intr)(void); }; #ifdef CONFIG_HAVE_HW_BREAKPOINT @@ -463,7 +464,7 @@ enum perf_addr_filter_action_t { /** * struct perf_addr_filter - address range filter definition * @entry: event's filter list linkage - * @inode: object file's inode for file-based filters + * @path: object file's path for file-based filters * @offset: filter range offset * @size: filter range size (size==0 means single address trigger) * @action: filter/start/stop @@ -887,6 +888,9 @@ extern void perf_sched_cb_dec(struct pmu *pmu); extern void perf_sched_cb_inc(struct pmu *pmu); extern int perf_event_task_disable(void); extern int perf_event_task_enable(void); + +extern void perf_pmu_resched(struct pmu *pmu); + extern int perf_event_refresh(struct perf_event *event, int refresh); extern void perf_event_update_userpage(struct perf_event *event); extern int perf_event_release_kernel(struct perf_event *event); @@ -1054,12 +1058,18 @@ static inline void perf_arch_fetch_caller_regs(struct pt_regs *regs, unsigned lo #endif /* - * Take a snapshot of the regs. Skip ip and frame pointer to - * the nth caller. We only need a few of the regs: + * When generating a perf sample in-line, instead of from an interrupt / + * exception, we lack a pt_regs. This is typically used from software events + * like: SW_CONTEXT_SWITCHES, SW_MIGRATIONS and the tie-in with tracepoints. + * + * We typically don't need a full set, but (for x86) do require: * - ip for PERF_SAMPLE_IP * - cs for user_mode() tests - * - bp for callchains - * - eflags, for future purposes, just in case + * - sp for PERF_SAMPLE_CALLCHAIN + * - eflags for MISC bits and CALLCHAIN (see: perf_hw_regs()) + * + * NOTE: assumes @regs is otherwise already 0 filled; this is important for + * things like PERF_SAMPLE_REGS_INTR. */ static inline void perf_fetch_caller_regs(struct pt_regs *regs) { |