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xfs: per-filesystem stats counter implementation

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This patch modifies the stats counting macros and the callers
to those macros to properly increment, decrement, and add-to
the xfs stats counts. The counts for global and per-fs stats
are correctly advanced, and cleared by writing a "1" to the
corresponding clear file.

global counts: /sys/fs/xfs/stats/stats
per-fs counts: /sys/fs/xfs/sda*/stats/stats

global clear:  /sys/fs/xfs/stats/stats_clear
per-fs clear:  /sys/fs/xfs/sda*/stats/stats_clear

[dchinner: cleaned up macro variables, removed CONFIG_FS_PROC around
 stats structures and macros. ]

Signed-off-by: Bill O'Donnell <billodo@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Bill O'Donnell
2015-10-12 18:21:22 +11:00
committed by Dave Chinner
parent 225e463558
commit ff6d6af235
21 changed files with 131 additions and 118 deletions
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18
fs/xfs/xfs_buf.c
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@@ -201,7 +201,7 @@ _xfs_buf_alloc(
atomic_set(&bp->b_pin_count, 0);
init_waitqueue_head(&bp->b_waiters);
XFS_STATS_INC(xb_create);
XFS_STATS_INC(target->bt_mount, xb_create);
trace_xfs_buf_init(bp, _RET_IP_);
return bp;
@@ -357,12 +357,12 @@ retry:
"possible memory allocation deadlock in %s (mode:0x%x)",
__func__, gfp_mask);
XFS_STATS_INC(xb_page_retries);
XFS_STATS_INC(bp->b_target->bt_mount, xb_page_retries);
congestion_wait(BLK_RW_ASYNC, HZ/50);
goto retry;
}
XFS_STATS_INC(xb_page_found);
XFS_STATS_INC(bp->b_target->bt_mount, xb_page_found);
nbytes = min_t(size_t, size, PAGE_SIZE - offset);
size -= nbytes;
@@ -516,7 +516,7 @@ _xfs_buf_find(
new_bp->b_pag = pag;
spin_unlock(&pag->pag_buf_lock);
} else {
XFS_STATS_INC(xb_miss_locked);
XFS_STATS_INC(btp->bt_mount, xb_miss_locked);
spin_unlock(&pag->pag_buf_lock);
xfs_perag_put(pag);
}
@@ -529,11 +529,11 @@ found:
if (!xfs_buf_trylock(bp)) {
if (flags & XBF_TRYLOCK) {
xfs_buf_rele(bp);
XFS_STATS_INC(xb_busy_locked);
XFS_STATS_INC(btp->bt_mount, xb_busy_locked);
return NULL;
}
xfs_buf_lock(bp);
XFS_STATS_INC(xb_get_locked_waited);
XFS_STATS_INC(btp->bt_mount, xb_get_locked_waited);
}
/*
@@ -549,7 +549,7 @@ found:
}
trace_xfs_buf_find(bp, flags, _RET_IP_);
XFS_STATS_INC(xb_get_locked);
XFS_STATS_INC(btp->bt_mount, xb_get_locked);
return bp;
}
@@ -603,7 +603,7 @@ found:
}
}
XFS_STATS_INC(xb_get);
XFS_STATS_INC(target->bt_mount, xb_get);
trace_xfs_buf_get(bp, flags, _RET_IP_);
return bp;
}
@@ -643,7 +643,7 @@ xfs_buf_read_map(
trace_xfs_buf_read(bp, flags, _RET_IP_);
if (!XFS_BUF_ISDONE(bp)) {
XFS_STATS_INC(xb_get_read);
XFS_STATS_INC(target->bt_mount, xb_get_read);
bp->b_ops = ops;
_xfs_buf_read(bp, flags);
} else if (flags & XBF_ASYNC) {