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Subject[PATCH 1/6] io_uring: add trace support for CQE overflow
Date
Add trace function for overflowing CQ ring.

Signed-off-by: Dylan Yudaken <dylany@fb.com>
---
include/trace/events/io_uring.h | 42 ++++++++++++++++++++++++++++++++-
1 file changed, 41 insertions(+), 1 deletion(-)

diff --git a/include/trace/events/io_uring.h b/include/trace/events/io_uring.h
index cddf5b6fbeb4..42534ec2ab9d 100644
--- a/include/trace/events/io_uring.h
+++ b/include/trace/events/io_uring.h
@@ -530,7 +530,7 @@ TRACE_EVENT(io_uring_req_failed,
),

TP_printk("ring %p, req %p, user_data 0x%llx, "
- "op %d, flags 0x%x, prio=%d, off=%llu, addr=%llu, "
+ "op %d, flags 0x%x, prio=%d, off=%llu, addr=%llu, "
"len=%u, rw_flags=0x%x, buf_index=%d, "
"personality=%d, file_index=%d, pad=0x%llx/%llx, error=%d",
__entry->ctx, __entry->req, __entry->user_data,
@@ -543,6 +543,46 @@ TRACE_EVENT(io_uring_req_failed,
(unsigned long long) __entry->pad2, __entry->error)
);

+
+/*
+ * io_uring_cqe_overflow - a CQE overflowed
+ *
+ * @ctx: pointer to a ring context structure
+ * @user_data: user data associated with the request
+ * @res: CQE result
+ * @cflags: CQE flags
+ * @ocqe: pointer to the overflow cqe (if available)
+ *
+ */
+TRACE_EVENT(io_uring_cqe_overflow,
+
+ TP_PROTO(void *ctx, unsigned long long user_data, s32 res, u32 cflags,
+ void *ocqe),
+
+ TP_ARGS(ctx, user_data, res, cflags, ocqe),
+
+ TP_STRUCT__entry (
+ __field( void *, ctx )
+ __field( unsigned long long, user_data )
+ __field( s32, res )
+ __field( u32, cflags )
+ __field( void *, ocqe )
+ ),
+
+ TP_fast_assign(
+ __entry->ctx = ctx;
+ __entry->user_data = user_data;
+ __entry->res = res;
+ __entry->cflags = cflags;
+ __entry->ocqe = ocqe;
+ ),
+
+ TP_printk("ring %p, user_data 0x%llx, res %d, flags %x, "
+ "overflow_cqe %p",
+ __entry->ctx, __entry->user_data, __entry->res,
+ __entry->cflags, __entry->ocqe)
+);
+
#endif /* _TRACE_IO_URING_H */

/* This part must be outside protection */
--
2.30.2
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