[PATCH v4 09/12] io_uring: add tracing for additional CQE32 fields

[Stefan Roesch]

This adds tracing for the extra1 and extra2 fields.

Co-developed-by: Jens Axboe <axboe at kernel.dk>
Signed-off-by: Stefan Roesch <shr at fb.com>
Signed-off-by: Jens Axboe <axboe at kernel.dk>
Reviewed-by: Kanchan Joshi <joshi.k at samsung.com>
---
 fs/io_uring.c                   | 11 ++++++-----
 include/trace/events/io_uring.h | 18 ++++++++++++++----
 2 files changed, 20 insertions(+), 9 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 3630671325ea..9dd075e39850 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2187,7 +2187,7 @@ static inline bool __io_fill_cqe_req_filled(struct io_ring_ctx *ctx,
 	struct io_uring_cqe *cqe;
 
 	trace_io_uring_complete(req->ctx, req, req->cqe.user_data,
-				req->cqe.res, req->cqe.flags);
+				req->cqe.res, req->cqe.flags, 0, 0);
 
 	/*
 	 * If we can't get a cq entry, userspace overflowed the
@@ -2211,7 +2211,7 @@ static inline bool __io_fill_cqe32_req_filled(struct io_ring_ctx *ctx,
 	u64 extra2 = req->extra2;
 
 	trace_io_uring_complete(req->ctx, req, req->cqe.user_data,
-				req->cqe.res, req->cqe.flags);
+				req->cqe.res, req->cqe.flags, extra1, extra2);
 
 	/*
 	 * If we can't get a cq entry, userspace overflowed the
@@ -2232,7 +2232,7 @@ static inline bool __io_fill_cqe32_req_filled(struct io_ring_ctx *ctx,
 
 static inline bool __io_fill_cqe_req(struct io_kiocb *req, s32 res, u32 cflags)
 {
-	trace_io_uring_complete(req->ctx, req, req->cqe.user_data, res, cflags);
+	trace_io_uring_complete(req->ctx, req, req->cqe.user_data, res, cflags, 0, 0);
 	return __io_fill_cqe(req->ctx, req->cqe.user_data, res, cflags);
 }
 
@@ -2247,7 +2247,8 @@ static inline void __io_fill_cqe32_req(struct io_kiocb *req, s32 res, u32 cflags
 	if (req->flags & REQ_F_CQE_SKIP)
 		return;
 
-	trace_io_uring_complete(ctx, req, req->cqe.user_data, res, cflags);
+	trace_io_uring_complete(ctx, req, req->cqe.user_data, res, cflags,
+				extra1, extra2);
 
 	/*
 	 * If we can't get a cq entry, userspace overflowed the
@@ -2271,7 +2272,7 @@ static noinline bool io_fill_cqe_aux(struct io_ring_ctx *ctx, u64 user_data,
 				     s32 res, u32 cflags)
 {
 	ctx->cq_extra++;
-	trace_io_uring_complete(ctx, NULL, user_data, res, cflags);
+	trace_io_uring_complete(ctx, NULL, user_data, res, cflags, 0, 0);
 	return __io_fill_cqe(ctx, user_data, res, cflags);
 }
 
diff --git a/include/trace/events/io_uring.h b/include/trace/events/io_uring.h
index 8477414d6d06..2eb4f4e47de4 100644
--- a/include/trace/events/io_uring.h
+++ b/include/trace/events/io_uring.h
@@ -318,13 +318,16 @@ TRACE_EVENT(io_uring_fail_link,
  * @user_data:		user data associated with the request
  * @res:		result of the request
  * @cflags:		completion flags
+ * @extra1:		extra 64-bit data for CQE32
+ * @extra2:		extra 64-bit data for CQE32
  *
  */
 TRACE_EVENT(io_uring_complete,
 
-	TP_PROTO(void *ctx, void *req, u64 user_data, int res, unsigned cflags),
+	TP_PROTO(void *ctx, void *req, u64 user_data, int res, unsigned cflags,
+		 u64 extra1, u64 extra2),
 
-	TP_ARGS(ctx, req, user_data, res, cflags),
+	TP_ARGS(ctx, req, user_data, res, cflags, extra1, extra2),
 
 	TP_STRUCT__entry (
 		__field(  void *,	ctx		)
@@ -332,6 +335,8 @@ TRACE_EVENT(io_uring_complete,
 		__field(  u64,		user_data	)
 		__field(  int,		res		)
 		__field(  unsigned,	cflags		)
+		__field(  u64,		extra1		)
+		__field(  u64,		extra2		)
 	),
 
 	TP_fast_assign(
@@ -340,12 +345,17 @@ TRACE_EVENT(io_uring_complete,
 		__entry->user_data	= user_data;
 		__entry->res		= res;
 		__entry->cflags		= cflags;
+		__entry->extra1		= extra1;
+		__entry->extra2		= extra2;
 	),
 
-	TP_printk("ring %p, req %p, user_data 0x%llx, result %d, cflags 0x%x",
+	TP_printk("ring %p, req %p, user_data 0x%llx, result %d, cflags 0x%x "
+		  "extra1 %llu extra2 %llu ",
 		__entry->ctx, __entry->req,
 		__entry->user_data,
-		__entry->res, __entry->cflags)
+		__entry->res, __entry->cflags,
+		(unsigned long long) __entry->extra1,
+		(unsigned long long) __entry->extra2)
 );
 
 /**
-- 
2.30.2