From 08dcd0288f6ecb97bc94260856e6b44cca4149e2 Mon Sep 17 00:00:00 2001
From: Dylan Yudaken <dylany@fb.com>
Date: Thu, 21 Apr 2022 02:13:41 -0700
Subject: [PATCH] io_uring: trace cqe overflows
Git-commit: 08dcd0288f6ecb97bc94260856e6b44cca4149e2
Patch-mainline: v5.19-rc1
References: bsc#1205205
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 <dylany@fb.com>
Link: https://lore.kernel.org/r/20220421091345.2115755-3-dylany@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Gabriel Krisman Bertazi <krisman@suse.de>
---
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,
--
2.35.3