[PATCH bpf-next 08/12] bpf: Count run stats in bpf_prog_run_array

[Jiri Olsa <jolsa@xxxxxxxxxx>]

Count runtime stats for bf programs executed through bpf_prog_run_array
function. That covers kprobe, perf event and trace syscall probe.

Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
---
 include/linux/bpf.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index 478fdc4794c9..732253eea675 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -2715,10 +2715,11 @@ bpf_prog_run_array(const struct bpf_prog_array *array,
 		   const void *ctx, bpf_prog_run_fn run_prog)
 {
 	const struct bpf_prog_array_item *item;
-	const struct bpf_prog *prog;
+	struct bpf_prog *prog;
 	struct bpf_run_ctx *old_run_ctx;
 	struct bpf_trace_run_ctx run_ctx;
 	u32 ret = 1;
+	u64 start;
 
 	RCU_LOCKDEP_WARN(!rcu_read_lock_held(), "no rcu lock held");
 
@@ -2732,7 +2733,9 @@ bpf_prog_run_array(const struct bpf_prog_array *array,
 	item = &array->items[0];
 	while ((prog = READ_ONCE(item->prog))) {
 		run_ctx.bpf_cookie = item->bpf_cookie;
+		start = bpf_prog_start_time();
 		ret &= run_prog(prog, ctx);
+		bpf_prog_update_prog_stats(prog, start);
 		item++;
 	}
 	bpf_reset_run_ctx(old_run_ctx);
-- 
2.41.0