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blktrace: port to tracepoints, update

Browse source 
Port to the new tracepoints API: split DEFINE_TRACE() and DECLARE_TRACE()
sites. Spread them out to the usage sites, as suggested by
Mathieu Desnoyers.

Signed-off-by: Ingo Molnar <[email protected]>
Acked-by: Mathieu Desnoyers <[email protected]>
This commit is contained in:
Ingo Molnar 2008-11-26 11:59:56 +01:00
commit 0bfc24559d
6 changed files with 74 additions and 34 deletions
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13
block/blk-core.c
View file

@ -32,6 +32,19 @@
#include "blk.h"
DEFINE_TRACE(block_plug);
DEFINE_TRACE(block_unplug_io);
DEFINE_TRACE(block_unplug_timer);
DEFINE_TRACE(block_getrq);
DEFINE_TRACE(block_sleeprq);
DEFINE_TRACE(block_rq_requeue);
DEFINE_TRACE(block_bio_backmerge);
DEFINE_TRACE(block_bio_frontmerge);
DEFINE_TRACE(block_bio_queue);
DEFINE_TRACE(block_rq_complete);
DEFINE_TRACE(block_remap); /* Also used in drivers/md/dm.c */
EXPORT_TRACEPOINT_SYMBOL_GPL(block_remap);
static int __make_request(struct request_queue *q, struct bio *bio);
/*

5
block/elevator.c
View file

@ -42,6 +42,8 @@
static DEFINE_SPINLOCK(elv_list_lock);
static LIST_HEAD(elv_list);
DEFINE_TRACE(block_rq_abort);
/*
* Merge hash stuff.
*/
@ -53,6 +55,9 @@ static const int elv_hash_shift = 6;
#define rq_hash_key(rq) ((rq)->sector + (rq)->nr_sectors)
#define ELV_ON_HASH(rq) (!hlist_unhashed(&(rq)->hash))
DEFINE_TRACE(block_rq_insert);
DEFINE_TRACE(block_rq_issue);
/*
* Query io scheduler to see if the current process issuing bio may be
* merged with rq.