Commit 08dcd028 authored by Dylan Yudaken's avatar Dylan Yudaken Committed by Jens Axboe
Browse files

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: default avatarDylan Yudaken <dylany@fb.com>
Link: https://lore.kernel.org/r/20220421091345.2115755-3-dylany@fb.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 47894438

fs/io_uring.c

+1 −0
Original line number Diff line number Diff line
@@ -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,