diff options
Diffstat (limited to 'kernel/events')
| -rw-r--r-- | kernel/events/core.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index c98ecf3e09ba..7da5515082f9 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -10000,8 +10000,16 @@ static void bpf_overflow_handler(struct perf_event *event, goto out; rcu_read_lock(); prog = READ_ONCE(event->prog); - if (prog) + if (prog) { + if (prog->call_get_stack && + (event->attr.sample_type & PERF_SAMPLE_CALLCHAIN) && + !(data->sample_flags & PERF_SAMPLE_CALLCHAIN)) { + data->callchain = perf_callchain(event, regs); + data->sample_flags |= PERF_SAMPLE_CALLCHAIN; + } + ret = bpf_prog_run(prog, &ctx); + } rcu_read_unlock(); out: __this_cpu_dec(bpf_prog_active); @@ -10027,7 +10035,7 @@ static int perf_event_set_bpf_handler(struct perf_event *event, if (event->attr.precise_ip && prog->call_get_stack && - (!(event->attr.sample_type & __PERF_SAMPLE_CALLCHAIN_EARLY) || + (!(event->attr.sample_type & PERF_SAMPLE_CALLCHAIN) || event->attr.exclude_callchain_kernel || event->attr.exclude_callchain_user)) { /* |