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authorBob Peterson <rpeterso@redhat.com>2012-05-09 18:11:35 +0200
committerSteven Whitehouse <swhiteho@redhat.com>2012-05-11 11:31:34 +0200
commit41db1ab9bed189cb904f7b0e145c3c6030c094c6 (patch)
tree6e7180fc7380d1c3b0c2d288c2f513f973e47f8e /fs/gfs2
parentGFS2: Eliminate unused "new" parameter to gfs2_meta_indirect_buffer (diff)
downloadlinux-41db1ab9bed189cb904f7b0e145c3c6030c094c6.tar.xz
linux-41db1ab9bed189cb904f7b0e145c3c6030c094c6.zip
GFS2: Add rgrp information to block_alloc trace point
This is a second attempt at a patch that adds rgrp information to the block allocation trace point for GFS2. As suggested, the patch was modified to list the rgrp information _after_ the fields that exist today. Again, the reason for this patch is to allow us to trace and debug problems with the block reservations patch, which is still in the works. We can debug problems with reservations if we can see what block allocations result from the block reservations. It may also be handy in figuring out if there are problems in rgrp free space accounting. In other words, we can use it to track the rgrp and its free space along side the allocations that are taking place. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2')
-rw-r--r--fs/gfs2/rgrp.c8
-rw-r--r--fs/gfs2/trace_gfs2.h16
2 files changed, 15 insertions, 9 deletions
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 645c16fcc252..f74fb9bd1973 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -1556,7 +1556,7 @@ int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *nblocks,
ip->i_inode.i_gid);
rgd->rd_free_clone -= *nblocks;
- trace_gfs2_block_alloc(ip, block, *nblocks,
+ trace_gfs2_block_alloc(ip, rgd, block, *nblocks,
dinode ? GFS2_BLKST_DINODE : GFS2_BLKST_USED);
*bn = block;
return 0;
@@ -1583,7 +1583,7 @@ void __gfs2_free_blocks(struct gfs2_inode *ip, u64 bstart, u32 blen, int meta)
rgd = rgblk_free(sdp, bstart, blen, GFS2_BLKST_FREE);
if (!rgd)
return;
- trace_gfs2_block_alloc(ip, bstart, blen, GFS2_BLKST_FREE);
+ trace_gfs2_block_alloc(ip, rgd, bstart, blen, GFS2_BLKST_FREE);
rgd->rd_free += blen;
rgd->rd_flags &= ~GFS2_RGF_TRIMMED;
gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
@@ -1621,7 +1621,7 @@ void gfs2_unlink_di(struct inode *inode)
rgd = rgblk_free(sdp, blkno, 1, GFS2_BLKST_UNLINKED);
if (!rgd)
return;
- trace_gfs2_block_alloc(ip, blkno, 1, GFS2_BLKST_UNLINKED);
+ trace_gfs2_block_alloc(ip, rgd, blkno, 1, GFS2_BLKST_UNLINKED);
gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
}
@@ -1651,7 +1651,7 @@ static void gfs2_free_uninit_di(struct gfs2_rgrpd *rgd, u64 blkno)
void gfs2_free_di(struct gfs2_rgrpd *rgd, struct gfs2_inode *ip)
{
gfs2_free_uninit_di(rgd, ip->i_no_addr);
- trace_gfs2_block_alloc(ip, ip->i_no_addr, 1, GFS2_BLKST_FREE);
+ trace_gfs2_block_alloc(ip, rgd, ip->i_no_addr, 1, GFS2_BLKST_FREE);
gfs2_quota_change(ip, -1, ip->i_inode.i_uid, ip->i_inode.i_gid);
gfs2_meta_wipe(ip, ip->i_no_addr, 1);
}
diff --git a/fs/gfs2/trace_gfs2.h b/fs/gfs2/trace_gfs2.h
index dfa89cd75534..1b8b81588199 100644
--- a/fs/gfs2/trace_gfs2.h
+++ b/fs/gfs2/trace_gfs2.h
@@ -457,10 +457,10 @@ TRACE_EVENT(gfs2_bmap,
/* Keep track of blocks as they are allocated/freed */
TRACE_EVENT(gfs2_block_alloc,
- TP_PROTO(const struct gfs2_inode *ip, u64 block, unsigned len,
- u8 block_state),
+ TP_PROTO(const struct gfs2_inode *ip, struct gfs2_rgrpd *rgd,
+ u64 block, unsigned len, u8 block_state),
- TP_ARGS(ip, block, len, block_state),
+ TP_ARGS(ip, rgd, block, len, block_state),
TP_STRUCT__entry(
__field( dev_t, dev )
@@ -468,6 +468,8 @@ TRACE_EVENT(gfs2_block_alloc,
__field( u64, inum )
__field( u32, len )
__field( u8, block_state )
+ __field( u64, rd_addr )
+ __field( u32, rd_free_clone )
),
TP_fast_assign(
@@ -476,14 +478,18 @@ TRACE_EVENT(gfs2_block_alloc,
__entry->inum = ip->i_no_addr;
__entry->len = len;
__entry->block_state = block_state;
+ __entry->rd_addr = rgd->rd_addr;
+ __entry->rd_free_clone = rgd->rd_free_clone;
),
- TP_printk("%u,%u bmap %llu alloc %llu/%lu %s",
+ TP_printk("%u,%u bmap %llu alloc %llu/%lu %s rg:%llu rf:%u",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->inum,
(unsigned long long)__entry->start,
(unsigned long)__entry->len,
- block_state_name(__entry->block_state))
+ block_state_name(__entry->block_state),
+ (unsigned long long)__entry->rd_addr,
+ __entry->rd_free_clone)
);
#endif /* _TRACE_GFS2_H */