io_uring: add completion trace event (51c3ff62) · Commits · 戴 / test

fs/io_uring.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -592,6 +592,8 @@ static void io_cqring_fill_event(struct io_ring_ctx *ctx, u64 ki_user_data,
		{
		struct io_uring_cqe *cqe;

		trace_io_uring_complete(ctx, ki_user_data, res);

		/*
		* If we can't get a cq entry, userspace overflowed the
		* submission (by quite a lot). Increment the overflow count in
		@@ -2733,7 +2735,7 @@ out:
		s.has_user = *mm != NULL;
		s.in_async = true;
		s.needs_fixed_file = true;
		trace_io_uring_submit_sqe(ctx, true, true);
		trace_io_uring_submit_sqe(ctx, s.sqe->user_data, true, true);
		io_submit_sqe(ctx, &s, statep, &link);
		submitted++;
		}
		@@ -2913,7 +2915,7 @@ out:
		s.needs_fixed_file = false;
		s.ring_fd = ring_fd;
		submit++;
		trace_io_uring_submit_sqe(ctx, true, false);
		trace_io_uring_submit_sqe(ctx, s.sqe->user_data, true, false);
		io_submit_sqe(ctx, &s, statep, &link);
		}

include/trace/events/io_uring.h

+45 −9

Original line number	Diff line number	Diff line
		@@ -284,10 +284,43 @@ TRACE_EVENT(io_uring_fail_link,
		TP_printk("request %p, link %p", __entry->req, __entry->link)
		);

		/**
		* io_uring_complete - called when completing an SQE
		*
		* @ctx: pointer to a ring context structure
		* @user_data: user data associated with the request
		* @res: result of the request
		*
		*/
		TRACE_EVENT(io_uring_complete,

		TP_PROTO(void *ctx, u64 user_data, long res),

		TP_ARGS(ctx, user_data, res),

		TP_STRUCT__entry (
		__field( void *, ctx )
		__field( u64, user_data )
		__field( long, res )
		),

		TP_fast_assign(
		__entry->ctx = ctx;
		__entry->user_data = user_data;
		__entry->res = res;
		),

		TP_printk("ring %p, user_data 0x%llx, result %ld",
		__entry->ctx, (unsigned long long)__entry->user_data,
		__entry->res)
		);


		/**
		* io_uring_submit_sqe - called before submitting one SQE
		*
		* @ctx: pointer to a ring context structure
		* @user_data: user data associated with the request
		* @force_nonblock: whether a context blocking or not
		* @sq_thread: true if sq_thread has submitted this SQE
		*
		@@ -296,24 +329,27 @@ TRACE_EVENT(io_uring_fail_link,
		*/
		TRACE_EVENT(io_uring_submit_sqe,

		TP_PROTO(void *ctx, bool force_nonblock, bool sq_thread),
		TP_PROTO(void *ctx, u64 user_data, bool force_nonblock, bool sq_thread),

		TP_ARGS(ctx, force_nonblock, sq_thread),
		TP_ARGS(ctx, user_data, force_nonblock, sq_thread),

		TP_STRUCT__entry (
		__field( void *, ctx )
		__field( u64, user_data )
		__field( bool, force_nonblock )
		__field( bool, sq_thread )
		),

		TP_fast_assign(
		__entry->ctx = ctx;
		__entry->user_data = user_data;
		__entry->force_nonblock = force_nonblock;
		__entry->sq_thread = sq_thread;
		),

		TP_printk("ring %p, non block %d, sq_thread %d",
		__entry->ctx, __entry->force_nonblock, __entry->sq_thread)
		TP_printk("ring %p, user data 0x%llx, non block %d, sq_thread %d",
		__entry->ctx, (unsigned long long) __entry->user_data,
		__entry->force_nonblock, __entry->sq_thread)
		);

		#endif /* _TRACE_IO_URING_H */

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