lkml.org 
[lkml]   [2006]   [Dec]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Subject[patch 11/13] io-accounting: via taskstats
From
Date
From: Andrew Morton <akpm@osdl.org>

Deliver IO accounting via taskstats.

Cc: Jay Lan <jlan@sgi.com>
Cc: Shailabh Nagar <nagar@watson.ibm.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Chris Sturtivant <csturtiv@sgi.com>
Cc: Tony Ernst <tee@sgi.com>
Cc: Guillaume Thouvenin <guillaume.thouvenin@bull.net>
Cc: David Wright <daw@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

include/linux/taskstats.h | 8 +++++++-
kernel/tsacct.c | 9 +++++++++
2 files changed, 16 insertions(+), 1 deletion(-)

diff -puN include/linux/taskstats.h~io-accounting-via-taskstats include/linux/taskstats.h
--- a/include/linux/taskstats.h~io-accounting-via-taskstats
+++ a/include/linux/taskstats.h
@@ -31,7 +31,7 @@
*/


-#define TASKSTATS_VERSION 2
+#define TASKSTATS_VERSION 3
#define TS_COMM_LEN 32 /* should be >= TASK_COMM_LEN
* in linux/sched.h */

@@ -140,6 +140,12 @@ struct taskstats {
__u64 read_syscalls; /* read syscalls */
__u64 write_syscalls; /* write syscalls */
/* Extended accounting fields end */
+
+#define TASKSTATS_HAS_IO_ACCOUNTING
+ /* Per-task storage I/O accounting starts */
+ __u64 read_bytes; /* bytes of read I/O */
+ __u64 write_bytes; /* bytes of write I/O */
+ __u64 cancelled_write_bytes; /* bytes of cancelled write I/O */
};


diff -puN kernel/tsacct.c~io-accounting-via-taskstats kernel/tsacct.c
--- a/kernel/tsacct.c~io-accounting-via-taskstats
+++ a/kernel/tsacct.c
@@ -96,6 +96,15 @@ void xacct_add_tsk(struct taskstats *sta
stats->write_char = p->wchar;
stats->read_syscalls = p->syscr;
stats->write_syscalls = p->syscw;
+#ifdef CONFIG_TASK_IO_ACCOUNTING
+ stats->read_bytes = p->ioac.read_bytes;
+ stats->write_bytes = p->ioac.write_bytes;
+ stats->cancelled_write_bytes = p->ioac.cancelled_write_bytes;
+#else
+ stats->read_bytes = 0;
+ stats->write_bytes = 0;
+ stats->cancelled_write_bytes = 0;
+#endif
}
#undef KB
#undef MB
_
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
\
 
 \ /
  Last update: 2006-12-08 12:57    [W:1.761 / U:2.872 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site