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Commit d3d9d2a5 authored by Jens Axboe's avatar Jens Axboe
Browse files

[PATCH] blktrace: uninline trace_note() 



It's too large to inline. Additionally clean it up, by fast pathing
the likely path.

Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent d916faac

block/blktrace.c

+15 −15
Original line number Diff line number Diff line
@@ -31,16 +31,14 @@ static unsigned int blktrace_seq __read_mostly = 1; 
/*

 * Send out a notify message.

 */

static inline unsigned int trace_note(struct blk_trace *bt,

		pid_t pid, int action,

static unsigned int trace_note(struct blk_trace *bt, pid_t pid, int action,

			       const void *data, size_t len)

{

	struct blk_io_trace *t;

	int cpu = smp_processor_id();



	t = relay_reserve(bt->rchan, sizeof(*t) + len);

	if (t == NULL)

		return 0;

	if (t) {

		const int cpu = smp_processor_id();



		t->magic = BLK_IO_TRACE_MAGIC | BLK_IO_TRACE_VERSION;

		t->time = sched_clock() - per_cpu(blk_trace_cpu_offset, cpu);
@@ -50,6 +48,8 @@ static inline unsigned int trace_note(struct blk_trace *bt, 
		t->cpu = cpu;

		t->pdu_len = len;

		memcpy((void *) t + sizeof(*t), data, len);

	}



	return blktrace_seq;

}