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authorecashin@coraid.com <ecashin@coraid.com>2005-04-19 01:00:22 -0400
committerGreg KH <greg@press.kroah.org>2005-04-19 01:00:22 -0400
commit0c6f0e7920f39b28bdbe5f134f3e592542332d87 (patch)
tree0d31149e2c52557555d35696e13d3d9baabc1eaa /drivers/block/aoe
parente3b7df65e089f143b9228472b80fb96c495fb634 (diff)
[PATCH] aoe 11/12: add support for disk statistics
add support for disk statistics Signed-off-by: Ed L. Cashin <ecashin@coraid.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/block/aoe')
-rw-r--r--drivers/block/aoe/aoe.h1
-rw-r--r--drivers/block/aoe/aoeblk.c1
-rw-r--r--drivers/block/aoe/aoecmd.c14
3 files changed, 16 insertions, 0 deletions
diff --git a/drivers/block/aoe/aoe.h b/drivers/block/aoe/aoe.h
index d3b0e2ca151a..2e92cfb4997c 100644
--- a/drivers/block/aoe/aoe.h
+++ b/drivers/block/aoe/aoe.h
@@ -90,6 +90,7 @@ enum {
90 90
91struct buf { 91struct buf {
92 struct list_head bufs; 92 struct list_head bufs;
93 ulong start_time; /* for disk stats */
93 ulong flags; 94 ulong flags;
94 ulong nframesout; 95 ulong nframesout;
95 char *bufaddr; 96 char *bufaddr;
diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index 63561b280bc5..a2735d975846 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -125,6 +125,7 @@ aoeblk_make_request(request_queue_t *q, struct bio *bio)
125 } 125 }
126 memset(buf, 0, sizeof(*buf)); 126 memset(buf, 0, sizeof(*buf));
127 INIT_LIST_HEAD(&buf->bufs); 127 INIT_LIST_HEAD(&buf->bufs);
128 buf->start_time = jiffies;
128 buf->bio = bio; 129 buf->bio = bio;
129 buf->resid = bio->bi_size; 130 buf->resid = bio->bi_size;
130 buf->sector = bio->bi_sector; 131 buf->sector = bio->bi_sector;
diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c
index f810bd6bf87f..60beb8db4612 100644
--- a/drivers/block/aoe/aoecmd.c
+++ b/drivers/block/aoe/aoecmd.c
@@ -456,6 +456,20 @@ aoecmd_ata_rsp(struct sk_buff *skb)
456 if (buf) { 456 if (buf) {
457 buf->nframesout -= 1; 457 buf->nframesout -= 1;
458 if (buf->nframesout == 0 && buf->resid == 0) { 458 if (buf->nframesout == 0 && buf->resid == 0) {
459 unsigned long duration = jiffies - buf->start_time;
460 unsigned long n_sect = buf->bio->bi_size >> 9;
461 struct gendisk *disk = d->gd;
462
463 if (bio_data_dir(buf->bio) == WRITE) {
464 disk_stat_inc(disk, writes);
465 disk_stat_add(disk, write_ticks, duration);
466 disk_stat_add(disk, write_sectors, n_sect);
467 } else {
468 disk_stat_inc(disk, reads);
469 disk_stat_add(disk, read_ticks, duration);
470 disk_stat_add(disk, read_sectors, n_sect);
471 }
472 disk_stat_add(disk, io_ticks, duration);
459 n = (buf->flags & BUFFL_FAIL) ? -EIO : 0; 473 n = (buf->flags & BUFFL_FAIL) ? -EIO : 0;
460 bio_endio(buf->bio, buf->bio->bi_size, n); 474 bio_endio(buf->bio, buf->bio->bi_size, n);
461 mempool_free(buf, d->bufpool); 475 mempool_free(buf, d->bufpool);