From: Alexey Dobriyan <adobriyan@gmail.com>
To: Jens Axboe <axboe@suse.de>
Cc: Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org
Subject: [PATCH] ifdef blktrace debugging fields
Date: Tue, 1 Aug 2006 17:47:03 +0400 [thread overview]
Message-ID: <20060801134703.GG7006@martell.zuzino.mipt.ru> (raw)
In-Reply-To: <20060801074436.GJ31908@suse.de>
On Tue, Aug 01, 2006 at 09:44:36AM +0200, Jens Axboe wrote:
> Certainly. If Alexey adds the blkdev.h bit as well, we can go ahead with
> it.
Done. Originally I looked at slab size of task_struct and still
recovering.
[PATCH] ifdef blktrace debugging fields
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---
block/ll_rw_blk.c | 4 ++--
include/linux/blkdev.h | 4 ++--
include/linux/sched.h | 3 ++-
kernel/fork.c | 2 ++
4 files changed, 8 insertions(+), 5 deletions(-)
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -1779,10 +1779,10 @@ static void blk_release_queue(struct kob
if (q->queue_tags)
__blk_queue_free_tags(q);
-
+#ifdef CONFIG_BLK_DEV_IO_TRACE
if (q->blk_trace)
blk_trace_shutdown(q);
-
+#endif
kmem_cache_free(requestq_cachep, q);
}
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -417,9 +417,9 @@ struct request_queue
unsigned int sg_timeout;
unsigned int sg_reserved_size;
int node;
-
+#ifdef CONFIG_BLK_DEV_IO_TRACE
struct blk_trace *blk_trace;
-
+#endif
/*
* reserved for flush operations
*/
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -784,8 +784,9 @@ #endif
struct prio_array *array;
unsigned short ioprio;
+#ifdef CONFIG_BLK_DEV_IO_TRACE
unsigned int btrace_seq;
-
+#endif
unsigned long sleep_avg;
unsigned long long timestamp, last_ran;
unsigned long long sched_time; /* sched_clock time spent running */
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -177,7 +177,9 @@ static struct task_struct *dup_task_stru
/* One for us, one for whoever does the "release_task()" (usually parent) */
atomic_set(&tsk->usage,2);
atomic_set(&tsk->fs_excl, 0);
+#ifdef CONFIG_BLK_DEV_IO_TRACE
tsk->btrace_seq = 0;
+#endif
tsk->splice_pipe = NULL;
return tsk;
}
next parent reply other threads:[~2006-08-01 13:47 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200608010657.k716vBWF004420@shell0.pdx.osdl.net>
[not found] ` <20060801071658.GG31908@suse.de>
[not found] ` <20060801002904.53407219.akpm@osdl.org>
[not found] ` <20060801074436.GJ31908@suse.de>
2006-08-01 13:47 ` Alexey Dobriyan [this message]
2006-08-01 20:12 ` [PATCH] ifdef blktrace debugging fields Jens Axboe
2006-08-01 22:49 ` [PATCH v3] " Alexey Dobriyan
2006-08-02 5:18 ` Jens Axboe
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