From 08dcd0288f6ecb97bc94260856e6b44cca4149e2 Mon Sep 17 00:00:00 2001 From: Dylan Yudaken Date: Thu, 21 Apr 2022 02:13:41 -0700 Subject: [PATCH] io_uring: trace cqe overflows Trace cqe overflows in io_uring. Print ocqe before the check, so if it is NULL it indicates that it has been dropped. Signed-off-by: Dylan Yudaken Link: https://lore.kernel.org/r/20220421091345.2115755-3-dylany@fb.com Signed-off-by: Jens Axboe --- fs/io_uring.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/io_uring.c b/fs/io_uring.c index 97ed7f419dae..e92b1b9d4b5f 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -2107,6 +2107,7 @@ static bool io_cqring_event_overflow(struct io_ring_ctx *ctx, u64 user_data, struct io_overflow_cqe *ocqe; ocqe = kmalloc(sizeof(*ocqe), GFP_ATOMIC | __GFP_ACCOUNT); + trace_io_uring_cqe_overflow(ctx, user_data, res, cflags, ocqe); if (!ocqe) { /* * If we're in ring overflow flush mode, or in task cancel mode,