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Date: Wed, 4 Mar 2009 10:53:09 -0500 (EST)
From: Steven Rostedt <rostedt@...dmis.org>
To: Peter Zijlstra <peterz@...radead.org>
cc: Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
"jens.axboe" <jens.axboe@...cle.com>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...e.hu>,
lkml <linux-kernel@...r.kernel.org>
Subject: Re: [RFC][PATCH] tracing: block events
On Wed, 4 Mar 2009, Peter Zijlstra wrote:
> Subject: tracing: block events
> From: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> Date: Wed Mar 04 15:09:43 CET 2009
>
> Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Peter, Thanks!
I'll try it out. I know this is an RFC patch, but it could really due
with a change log ;-)
-- Steve
> ---
> include/trace/block.h | 69 --------------
> include/trace/block_event_types.h | 177 ++++++++++++++++++++++++++++++++++++++
> include/trace/trace_event_types.h | 1
> include/trace/trace_events.h | 1
> 4 files changed, 180 insertions(+), 68 deletions(-)
>
> Index: linux-2.6/include/trace/block.h
> ===================================================================
> --- linux-2.6.orig/include/trace/block.h
> +++ linux-2.6/include/trace/block.h
> @@ -4,73 +4,6 @@
> #include <linux/blkdev.h>
> #include <linux/tracepoint.h>
>
> -DECLARE_TRACE(block_rq_abort,
> - TPPROTO(struct request_queue *q, struct request *rq),
> - TPARGS(q, rq));
> -
> -DECLARE_TRACE(block_rq_insert,
> - TPPROTO(struct request_queue *q, struct request *rq),
> - TPARGS(q, rq));
> -
> -DECLARE_TRACE(block_rq_issue,
> - TPPROTO(struct request_queue *q, struct request *rq),
> - TPARGS(q, rq));
> -
> -DECLARE_TRACE(block_rq_requeue,
> - TPPROTO(struct request_queue *q, struct request *rq),
> - TPARGS(q, rq));
> -
> -DECLARE_TRACE(block_rq_complete,
> - TPPROTO(struct request_queue *q, struct request *rq),
> - TPARGS(q, rq));
> -
> -DECLARE_TRACE(block_bio_bounce,
> - TPPROTO(struct request_queue *q, struct bio *bio),
> - TPARGS(q, bio));
> -
> -DECLARE_TRACE(block_bio_complete,
> - TPPROTO(struct request_queue *q, struct bio *bio),
> - TPARGS(q, bio));
> -
> -DECLARE_TRACE(block_bio_backmerge,
> - TPPROTO(struct request_queue *q, struct bio *bio),
> - TPARGS(q, bio));
> -
> -DECLARE_TRACE(block_bio_frontmerge,
> - TPPROTO(struct request_queue *q, struct bio *bio),
> - TPARGS(q, bio));
> -
> -DECLARE_TRACE(block_bio_queue,
> - TPPROTO(struct request_queue *q, struct bio *bio),
> - TPARGS(q, bio));
> -
> -DECLARE_TRACE(block_getrq,
> - TPPROTO(struct request_queue *q, struct bio *bio, int rw),
> - TPARGS(q, bio, rw));
> -
> -DECLARE_TRACE(block_sleeprq,
> - TPPROTO(struct request_queue *q, struct bio *bio, int rw),
> - TPARGS(q, bio, rw));
> -
> -DECLARE_TRACE(block_plug,
> - TPPROTO(struct request_queue *q),
> - TPARGS(q));
> -
> -DECLARE_TRACE(block_unplug_timer,
> - TPPROTO(struct request_queue *q),
> - TPARGS(q));
> -
> -DECLARE_TRACE(block_unplug_io,
> - TPPROTO(struct request_queue *q),
> - TPARGS(q));
> -
> -DECLARE_TRACE(block_split,
> - TPPROTO(struct request_queue *q, struct bio *bio, unsigned int pdu),
> - TPARGS(q, bio, pdu));
> -
> -DECLARE_TRACE(block_remap,
> - TPPROTO(struct request_queue *q, struct bio *bio, dev_t dev,
> - sector_t from, sector_t to),
> - TPARGS(q, bio, dev, from, to));
> +#include <trace/block_event_types.h>
>
> #endif
> Index: linux-2.6/include/trace/block_event_types.h
> ===================================================================
> --- /dev/null
> +++ linux-2.6/include/trace/block_event_types.h
> @@ -0,0 +1,177 @@
> +
> +#ifndef TRACE_EVENT_FORMAT
> +# error Do not include this file directly.
> +# error Unless you know what you are doing.
> +#endif
> +
> +#undef TRACE_SYSTEM
> +#define TRACE_SYSTEM block
> +
> +#ifdef CONFIG_BLK_DEV_IO_TRACE
> +#define Q_DEV(q) (q->bt ? q->bt->dev : 0)
> +#else
> +#define Q_DEV(q) 0
> +#endif
> +
> +TRACE_FORMAT(block_rq_abort,
> + TPPROTO(struct request_queue *q, struct request *rq),
> + TPARGS(q, rq),
> + TPFMT("%d:%d %c %llu + %u",
> + MAJOR(Q_DEV(q)), MINOR(Q_DEV(q)),
> + rq->cmd_flags & __REQ_RW ? 'W' : 'R',
> + blk_pc_request(rq) ? 0 : rq->hard_sector,
> + blk_pc_request(rq) ? rq->data_len : rq->hard_nr_sectors << 9)
> + );
> +
> +TRACE_FORMAT(block_rq_insert,
> + TPPROTO(struct request_queue *q, struct request *rq),
> + TPARGS(q, rq),
> + TPFMT("%d:%d %c %llu + %u",
> + MAJOR(Q_DEV(q)), MINOR(Q_DEV(q)),
> + rq->cmd_flags & __REQ_RW ? 'W' : 'R',
> + blk_pc_request(rq) ? 0 : rq->hard_sector,
> + blk_pc_request(rq) ? rq->data_len : rq->hard_nr_sectors << 9)
> + );
> +
> +TRACE_FORMAT(block_rq_issue,
> + TPPROTO(struct request_queue *q, struct request *rq),
> + TPARGS(q, rq),
> + TPFMT("%d:%d %c %llu + %u",
> + MAJOR(Q_DEV(q)), MINOR(Q_DEV(q)),
> + rq->cmd_flags & __REQ_RW ? 'W' : 'R',
> + blk_pc_request(rq) ? 0 : rq->hard_sector,
> + blk_pc_request(rq) ? rq->data_len : rq->hard_nr_sectors << 9)
> + );
> +
> +TRACE_FORMAT(block_rq_requeue,
> + TPPROTO(struct request_queue *q, struct request *rq),
> + TPARGS(q, rq),
> + TPFMT("%d:%d %c %llu + %u [%d]",
> + MAJOR(Q_DEV(q)), MINOR(Q_DEV(q)),
> + rq->cmd_flags & __REQ_RW ? 'W' : 'R',
> + blk_pc_request(rq) ? 0 : rq->hard_sector,
> + blk_pc_request(rq) ? rq->data_len : rq->hard_nr_sectors << 9,
> + rq->errors)
> + );
> +
> +TRACE_FORMAT(block_rq_complete,
> + TPPROTO(struct request_queue *q, struct request *rq),
> + TPARGS(q, rq),
> + TPFMT("%d:%d %c %llu + %u [%d]",
> + MAJOR(Q_DEV(q)), MINOR(Q_DEV(q)),
> + rq->cmd_flags & __REQ_RW ? 'W' : 'R',
> + blk_pc_request(rq) ? 0 : rq->hard_sector,
> + blk_pc_request(rq) ? rq->data_len : rq->hard_nr_sectors << 9,
> + rq->errors)
> + );
> +
> +TRACE_FORMAT(block_bio_bounce,
> + TPPROTO(struct request_queue *q, struct bio *bio),
> + TPARGS(q, bio),
> + TPFMT("%d:%d %c %llu + %u",
> + MAJOR(Q_DEV(q)), MINOR(Q_DEV(q)),
> + bio->bi_rw & WRITE ? 'W' : 'R',
> + bio->bi_sector, bio->bi_size)
> + );
> +
> +TRACE_FORMAT(block_bio_complete,
> + TPPROTO(struct request_queue *q, struct bio *bio),
> + TPARGS(q, bio),
> + TPFMT("%d:%d %c %llu + %u [%d]",
> + MAJOR(Q_DEV(q)), MINOR(Q_DEV(q)),
> + bio->bi_rw & WRITE ? 'W' : 'R',
> + bio->bi_sector, bio->bi_size,
> + !bio_flagged(bio, BIO_UPTODATE))
> + );
> +
> +TRACE_FORMAT(block_bio_backmerge,
> + TPPROTO(struct request_queue *q, struct bio *bio),
> + TPARGS(q, bio),
> + TPFMT("%d:%d %c %llu + %u",
> + MAJOR(Q_DEV(q)), MINOR(Q_DEV(q)),
> + bio->bi_rw & WRITE ? 'W' : 'R',
> + bio->bi_sector, bio->bi_size)
> + );
> +
> +TRACE_FORMAT(block_bio_frontmerge,
> + TPPROTO(struct request_queue *q, struct bio *bio),
> + TPARGS(q, bio),
> + TPFMT("%d:%d %c %llu + %u",
> + MAJOR(Q_DEV(q)), MINOR(Q_DEV(q)),
> + bio->bi_rw & WRITE ? 'W' : 'R',
> + bio->bi_sector, bio->bi_size)
> + );
> +
> +TRACE_FORMAT(block_bio_queue,
> + TPPROTO(struct request_queue *q, struct bio *bio),
> + TPARGS(q, bio),
> + TPFMT("%d:%d %c %llu + %u",
> + MAJOR(Q_DEV(q)), MINOR(Q_DEV(q)),
> + bio->bi_rw & WRITE ? 'W' : 'R',
> + bio->bi_sector, bio->bi_size)
> + );
> +
> +TRACE_FORMAT(block_getrq,
> + TPPROTO(struct request_queue *q, struct bio *bio, int rw),
> + TPARGS(q, bio, rw),
> + TPFMT("%d:%d %c %llu + %u",
> + MAJOR(Q_DEV(q)), MINOR(Q_DEV(q)),
> + (bio ? (bio->bi_rw & WRITE) : rw) ? 'W' : 'R',
> + bio ? bio->bi_sector : 0,
> + bio ? bio->bi_size : 0)
> + );
> +
> +TRACE_FORMAT(block_sleeprq,
> + TPPROTO(struct request_queue *q, struct bio *bio, int rw),
> + TPARGS(q, bio, rw),
> + TPFMT("%d:%d %c %llu + %u",
> + MAJOR(Q_DEV(q)), MINOR(Q_DEV(q)),
> + (bio ? (bio->bi_rw & WRITE) : rw) ? 'W' : 'R',
> + bio ? bio->bi_sector : 0,
> + bio ? bio->bi_size : 0)
> + );
> +
> +TRACE_FORMAT(block_plug,
> + TPPROTO(struct request_queue *q),
> + TPARGS(q),
> + TPFMT("%d:%d",
> + MAJOR(Q_DEV(q)), MINOR(Q_DEV(q)))
> + );
> +
> +TRACE_FORMAT(block_unplug_timer,
> + TPPROTO(struct request_queue *q),
> + TPARGS(q),
> + TPFMT("%d:%d",
> + MAJOR(Q_DEV(q)), MINOR(Q_DEV(q)))
> + );
> +
> +TRACE_FORMAT(block_unplug_io,
> + TPPROTO(struct request_queue *q),
> + TPARGS(q),
> + TPFMT("%d:%d",
> + MAJOR(Q_DEV(q)), MINOR(Q_DEV(q)))
> + );
> +
> +TRACE_FORMAT(block_split,
> + TPPROTO(struct request_queue *q, struct bio *bio, unsigned int pdu),
> + TPARGS(q, bio, pdu),
> + TPFMT("%d:%d %c %llu + %u",
> + MAJOR(Q_DEV(q)), MINOR(Q_DEV(q)),
> + bio->bi_rw & WRITE ? 'W' : 'R',
> + bio->bi_sector, bio->bi_size)
> + ); /* FIXME add pdu info */
> +
> +TRACE_FORMAT(block_remap,
> + TPPROTO(struct request_queue *q, struct bio *bio, dev_t dev,
> + sector_t from, sector_t to),
> + TPARGS(q, bio, dev, from, to),
> + TPFMT("%d:%d %c %llu + %u -> (%d:%d) %llu",
> + MAJOR(Q_DEV(q)), MINOR(Q_DEV(q)),
> + bio->bi_rw & WRITE ? 'W' : 'R',
> + from, bio->bi_size,
> + MAJOR(dev), MINOR(dev), to)
> + );
> +
> +#undef Q_DEV
> +
> +#undef TRACE_SYSTEM
> Index: linux-2.6/include/trace/trace_event_types.h
> ===================================================================
> --- linux-2.6.orig/include/trace/trace_event_types.h
> +++ linux-2.6/include/trace/trace_event_types.h
> @@ -3,3 +3,4 @@
> #include <trace/sched_event_types.h>
> #include <trace/irq_event_types.h>
> #include <trace/lockdep_event_types.h>
> +#include <trace/block_event_types.h>
> Index: linux-2.6/include/trace/trace_events.h
> ===================================================================
> --- linux-2.6.orig/include/trace/trace_events.h
> +++ linux-2.6/include/trace/trace_events.h
> @@ -3,3 +3,4 @@
> #include <trace/sched.h>
> #include <trace/irq.h>
> #include <trace/lockdep.h>
> +#include <trace/block.h>
>
>
>
--
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