diff options
Diffstat (limited to 'kernel/events/core.c')
| -rw-r--r-- | kernel/events/core.c | 48 |
1 files changed, 47 insertions, 1 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 333735531968..5a54630db86b 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -7992,7 +7992,7 @@ static struct pmu perf_tracepoint = { .read = perf_swevent_read, }; -#ifdef CONFIG_KPROBE_EVENTS +#if defined(CONFIG_KPROBE_EVENTS) || defined(CONFIG_UPROBE_EVENTS) /* * Flags in config, used by dynamic PMU kprobe and uprobe * The flags should match following PMU_FORMAT_ATTR(). @@ -8020,7 +8020,9 @@ static const struct attribute_group *probe_attr_groups[] = { &probe_format_group, NULL, }; +#endif +#ifdef CONFIG_KPROBE_EVENTS static int perf_kprobe_event_init(struct perf_event *event); static struct pmu perf_kprobe = { .task_ctx_nr = perf_sw_context, @@ -8057,12 +8059,52 @@ static int perf_kprobe_event_init(struct perf_event *event) } #endif /* CONFIG_KPROBE_EVENTS */ +#ifdef CONFIG_UPROBE_EVENTS +static int perf_uprobe_event_init(struct perf_event *event); +static struct pmu perf_uprobe = { + .task_ctx_nr = perf_sw_context, + .event_init = perf_uprobe_event_init, + .add = perf_trace_add, + .del = perf_trace_del, + .start = perf_swevent_start, + .stop = perf_swevent_stop, + .read = perf_swevent_read, + .attr_groups = probe_attr_groups, +}; + +static int perf_uprobe_event_init(struct perf_event *event) +{ + int err; + bool is_retprobe; + + if (event->attr.type != perf_uprobe.type) + return -ENOENT; + /* + * no branch sampling for probe events + */ + if (has_branch_stack(event)) + return -EOPNOTSUPP; + + is_retprobe = event->attr.config & PERF_PROBE_CONFIG_IS_RETPROBE; + err = perf_uprobe_init(event, is_retprobe); + if (err) + return err; + + event->destroy = perf_uprobe_destroy; + + return 0; +} +#endif /* CONFIG_UPROBE_EVENTS */ + static inline void perf_tp_register(void) { perf_pmu_register(&perf_tracepoint, "tracepoint", PERF_TYPE_TRACEPOINT); #ifdef CONFIG_KPROBE_EVENTS perf_pmu_register(&perf_kprobe, "kprobe", -1); #endif +#ifdef CONFIG_UPROBE_EVENTS + perf_pmu_register(&perf_uprobe, "uprobe", -1); +#endif } static void perf_event_free_filter(struct perf_event *event) @@ -8151,6 +8193,10 @@ static inline bool perf_event_is_tracing(struct perf_event *event) if (event->pmu == &perf_kprobe) return true; #endif +#ifdef CONFIG_UPROBE_EVENTS + if (event->pmu == &perf_uprobe) + return true; +#endif return false; } |