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From: Yonghong Song <yhs@fb.com>
To: <peterz@infradead.org>, <rostedt@goodmis.org>, <ast@fb.com>,
	<daniel@iogearbox.net>, <kafai@fb.com>, <netdev@vger.kernel.org>
Cc: <kernel-team@fb.com>
Subject: [PATCH net-next v3 1/3] bpf: use the same condition in perf event set/free bpf handler
Date: Mon, 23 Oct 2017 23:53:07 -0700	[thread overview]
Message-ID: <20171024065309.2401893-2-yhs@fb.com> (raw)
In-Reply-To: <20171024065309.2401893-1-yhs@fb.com>

This is a cleanup such that doing the same check in
perf_event_free_bpf_prog as we already do in
perf_event_set_bpf_prog step.

Signed-off-by: Yonghong Song <yhs@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
---
 kernel/events/core.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 31ee304..9f78a682 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -8191,10 +8191,10 @@ static void perf_event_free_bpf_prog(struct perf_event *event)
 {
 	struct bpf_prog *prog;
 
-	perf_event_free_bpf_handler(event);
-
-	if (!event->tp_event)
+	if (event->attr.type != PERF_TYPE_TRACEPOINT) {
+		perf_event_free_bpf_handler(event);
 		return;
+	}
 
 	prog = event->tp_event->prog;
 	if (prog && event->tp_event->bpf_prog_owner == event) {
-- 
2.9.5

  reply	other threads:[~2017-10-24  6:53 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-10-24  6:53 [PATCH net-next v3 0/3] bpf: permit multiple bpf attachments for a single perf tracepoint event Yonghong Song
2017-10-24  6:53 ` Yonghong Song [this message]
2017-10-24  6:53 ` [PATCH net-next v3 2/3] bpf: permit multiple bpf attachments for a single perf event Yonghong Song
2017-10-25  9:32   ` Jesper Dangaard Brouer
2017-10-25 17:01     ` Alexei Starovoitov
2017-10-24  6:53 ` [PATCH net-next v3 3/3] bpf: add a test case to test single tp multiple bpf attachment Yonghong Song
2017-10-25  1:48 ` [PATCH net-next v3 0/3] bpf: permit multiple bpf attachments for a single perf tracepoint event David Miller

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