As BPF can access sample data, it needs to populate the data. Also
remove the logic to get the callchain specifically as it's covered by
the perf_prepare_sample() now.
Cc: Song Liu <song@xxxxxxxxxx>
Cc: bpf@xxxxxxxxxxxxxxx
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
---
kernel/events/core.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 5c4f3fa3d2b7..af8365fb639a 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -10363,13 +10363,7 @@ static void bpf_overflow_handler(struct perf_event *event,
rcu_read_lock();
prog = READ_ONCE(event->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;
- }
-
+ perf_prepare_sample(data, event, regs);
ret = bpf_prog_run(prog, &ctx);
}
rcu_read_unlock();
--
2.39.0.314.g84b9a713c41-goog
