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authorChristoph Hellwig <hch@infradead.org>2009-12-14 23:14:59 +0000
committerAlex Elder <aelder@sgi.com>2009-12-14 23:08:16 -0600
commit0b1b213fcf3a8486ada99a2bab84ab8c6f51b264 (patch)
tree661fd8da7487231224c77b95c33986cb7d7b41ef /fs/xfs/quota/xfs_qm.c
parent6ef3554422e2c7e7aa424ba63737da498881dff4 (diff)
xfs: event tracing support
Convert the old xfs tracing support that could only be used with the out of tree kdb and xfsidbg patches to use the generic event tracer. To use it make sure CONFIG_EVENT_TRACING is enabled and then enable all xfs trace channels by: echo 1 > /sys/kernel/debug/tracing/events/xfs/enable or alternatively enable single events by just doing the same in one event subdirectory, e.g. echo 1 > /sys/kernel/debug/tracing/events/xfs/xfs_ihold/enable or set more complex filters, etc. In Documentation/trace/events.txt all this is desctribed in more detail. To reads the events do a cat /sys/kernel/debug/tracing/trace Compared to the last posting this patch converts the tracing mostly to the one tracepoint per callsite model that other users of the new tracing facility also employ. This allows a very fine-grained control of the tracing, a cleaner output of the traces and also enables the perf tool to use each tracepoint as a virtual performance counter, allowing us to e.g. count how often certain workloads git various spots in XFS. Take a look at http://lwn.net/Articles/346470/ for some examples. Also the btree tracing isn't included at all yet, as it will require additional core tracing features not in mainline yet, I plan to deliver it later. And the really nice thing about this patch is that it actually removes many lines of code while adding this nice functionality: fs/xfs/Makefile | 8 fs/xfs/linux-2.6/xfs_acl.c | 1 fs/xfs/linux-2.6/xfs_aops.c | 52 - fs/xfs/linux-2.6/xfs_aops.h | 2 fs/xfs/linux-2.6/xfs_buf.c | 117 +-- fs/xfs/linux-2.6/xfs_buf.h | 33 fs/xfs/linux-2.6/xfs_fs_subr.c | 3 fs/xfs/linux-2.6/xfs_ioctl.c | 1 fs/xfs/linux-2.6/xfs_ioctl32.c | 1 fs/xfs/linux-2.6/xfs_iops.c | 1 fs/xfs/linux-2.6/xfs_linux.h | 1 fs/xfs/linux-2.6/xfs_lrw.c | 87 -- fs/xfs/linux-2.6/xfs_lrw.h | 45 - fs/xfs/linux-2.6/xfs_super.c | 104 --- fs/xfs/linux-2.6/xfs_super.h | 7 fs/xfs/linux-2.6/xfs_sync.c | 1 fs/xfs/linux-2.6/xfs_trace.c | 75 ++ fs/xfs/linux-2.6/xfs_trace.h | 1369 +++++++++++++++++++++++++++++++++++++++++ fs/xfs/linux-2.6/xfs_vnode.h | 4 fs/xfs/quota/xfs_dquot.c | 110 --- fs/xfs/quota/xfs_dquot.h | 21 fs/xfs/quota/xfs_qm.c | 40 - fs/xfs/quota/xfs_qm_syscalls.c | 4 fs/xfs/support/ktrace.c | 323 --------- fs/xfs/support/ktrace.h | 85 -- fs/xfs/xfs.h | 16 fs/xfs/xfs_ag.h | 14 fs/xfs/xfs_alloc.c | 230 +----- fs/xfs/xfs_alloc.h | 27 fs/xfs/xfs_alloc_btree.c | 1 fs/xfs/xfs_attr.c | 107 --- fs/xfs/xfs_attr.h | 10 fs/xfs/xfs_attr_leaf.c | 14 fs/xfs/xfs_attr_sf.h | 40 - fs/xfs/xfs_bmap.c | 507 +++------------ fs/xfs/xfs_bmap.h | 49 - fs/xfs/xfs_bmap_btree.c | 6 fs/xfs/xfs_btree.c | 5 fs/xfs/xfs_btree_trace.h | 17 fs/xfs/xfs_buf_item.c | 87 -- fs/xfs/xfs_buf_item.h | 20 fs/xfs/xfs_da_btree.c | 3 fs/xfs/xfs_da_btree.h | 7 fs/xfs/xfs_dfrag.c | 2 fs/xfs/xfs_dir2.c | 8 fs/xfs/xfs_dir2_block.c | 20 fs/xfs/xfs_dir2_leaf.c | 21 fs/xfs/xfs_dir2_node.c | 27 fs/xfs/xfs_dir2_sf.c | 26 fs/xfs/xfs_dir2_trace.c | 216 ------ fs/xfs/xfs_dir2_trace.h | 72 -- fs/xfs/xfs_filestream.c | 8 fs/xfs/xfs_fsops.c | 2 fs/xfs/xfs_iget.c | 111 --- fs/xfs/xfs_inode.c | 67 -- fs/xfs/xfs_inode.h | 76 -- fs/xfs/xfs_inode_item.c | 5 fs/xfs/xfs_iomap.c | 85 -- fs/xfs/xfs_iomap.h | 8 fs/xfs/xfs_log.c | 181 +---- fs/xfs/xfs_log_priv.h | 20 fs/xfs/xfs_log_recover.c | 1 fs/xfs/xfs_mount.c | 2 fs/xfs/xfs_quota.h | 8 fs/xfs/xfs_rename.c | 1 fs/xfs/xfs_rtalloc.c | 1 fs/xfs/xfs_rw.c | 3 fs/xfs/xfs_trans.h | 47 + fs/xfs/xfs_trans_buf.c | 62 - fs/xfs/xfs_vnodeops.c | 8 70 files changed, 2151 insertions(+), 2592 deletions(-) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
Diffstat (limited to 'fs/xfs/quota/xfs_qm.c')
-rw-r--r--fs/xfs/quota/xfs_qm.c40
1 files changed, 26 insertions, 14 deletions
diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/quota/xfs_qm.c
index 45b1bfef7388..9e627a8b5b0e 100644
--- a/fs/xfs/quota/xfs_qm.c
+++ b/fs/xfs/quota/xfs_qm.c
@@ -47,6 +47,7 @@
#include "xfs_trans_space.h"
#include "xfs_utils.h"
#include "xfs_qm.h"
+#include "xfs_trace.h"
/*
* The global quota manager. There is only one of these for the entire
@@ -453,7 +454,7 @@ again:
xfs_dqunlock(dqp);
continue;
}
- xfs_dqtrace_entry(dqp, "FLUSHALL: DQDIRTY");
+
/* XXX a sentinel would be better */
recl = XFS_QI_MPLRECLAIMS(mp);
if (!xfs_dqflock_nowait(dqp)) {
@@ -651,7 +652,7 @@ xfs_qm_dqattach_one(
*/
dqp = *IO_idqpp;
if (dqp) {
- xfs_dqtrace_entry(dqp, "DQATTACH: found in ip");
+ trace_xfs_dqattach_found(dqp);
return 0;
}
@@ -704,7 +705,7 @@ xfs_qm_dqattach_one(
if (error)
return error;
- xfs_dqtrace_entry(dqp, "DQATTACH: found by dqget");
+ trace_xfs_dqattach_get(dqp);
/*
* dqget may have dropped and re-acquired the ilock, but it guarantees
@@ -890,15 +891,15 @@ xfs_qm_dqdetach(
if (!(ip->i_udquot || ip->i_gdquot))
return;
+ trace_xfs_dquot_dqdetach(ip);
+
ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_uquotino);
ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_gquotino);
if (ip->i_udquot) {
- xfs_dqtrace_entry_ino(ip->i_udquot, "DQDETTACH", ip);
xfs_qm_dqrele(ip->i_udquot);
ip->i_udquot = NULL;
}
if (ip->i_gdquot) {
- xfs_dqtrace_entry_ino(ip->i_gdquot, "DQDETTACH", ip);
xfs_qm_dqrele(ip->i_gdquot);
ip->i_gdquot = NULL;
}
@@ -977,7 +978,6 @@ xfs_qm_sync(
* across a disk write
*/
xfs_qm_mplist_unlock(mp);
- xfs_dqtrace_entry(dqp, "XQM_SYNC: DQFLUSH");
error = xfs_qm_dqflush(dqp, flush_flags);
xfs_dqunlock(dqp);
if (error && XFS_FORCED_SHUTDOWN(mp))
@@ -1350,7 +1350,8 @@ xfs_qm_reset_dqcounts(
xfs_disk_dquot_t *ddq;
int j;
- xfs_buftrace("RESET DQUOTS", bp);
+ trace_xfs_reset_dqcounts(bp, _RET_IP_);
+
/*
* Reset all counters and timers. They'll be
* started afresh by xfs_qm_quotacheck.
@@ -1543,7 +1544,9 @@ xfs_qm_quotacheck_dqadjust(
xfs_qcnt_t rtblks)
{
ASSERT(XFS_DQ_IS_LOCKED(dqp));
- xfs_dqtrace_entry(dqp, "QCHECK DQADJUST");
+
+ trace_xfs_dqadjust(dqp);
+
/*
* Adjust the inode count and the block count to reflect this inode's
* resource usage.
@@ -1994,7 +1997,9 @@ xfs_qm_shake_freelist(
*/
if (XFS_DQ_IS_DIRTY(dqp)) {
int error;
- xfs_dqtrace_entry(dqp, "DQSHAKE: DQDIRTY");
+
+ trace_xfs_dqshake_dirty(dqp);
+
/*
* We flush it delayed write, so don't bother
* releasing the mplock.
@@ -2038,7 +2043,9 @@ xfs_qm_shake_freelist(
return nreclaimed;
goto tryagain;
}
- xfs_dqtrace_entry(dqp, "DQSHAKE: UNLINKING");
+
+ trace_xfs_dqshake_unlink(dqp);
+
#ifdef QUOTADEBUG
cmn_err(CE_DEBUG, "Shake 0x%p, ID 0x%x\n",
dqp, be32_to_cpu(dqp->q_core.d_id));
@@ -2125,7 +2132,9 @@ xfs_qm_dqreclaim_one(void)
*/
if (dqp->dq_flags & XFS_DQ_WANT) {
ASSERT(! (dqp->dq_flags & XFS_DQ_INACTIVE));
- xfs_dqtrace_entry(dqp, "DQRECLAIM: DQWANT");
+
+ trace_xfs_dqreclaim_want(dqp);
+
xfs_dqunlock(dqp);
xfs_qm_freelist_unlock(xfs_Gqm);
if (++restarts >= XFS_QM_RECLAIM_MAX_RESTARTS)
@@ -2171,7 +2180,9 @@ xfs_qm_dqreclaim_one(void)
*/
if (XFS_DQ_IS_DIRTY(dqp)) {
int error;
- xfs_dqtrace_entry(dqp, "DQRECLAIM: DQDIRTY");
+
+ trace_xfs_dqreclaim_dirty(dqp);
+
/*
* We flush it delayed write, so don't bother
* releasing the freelist lock.
@@ -2194,8 +2205,9 @@ xfs_qm_dqreclaim_one(void)
if (!mutex_trylock(&dqp->q_hash->qh_lock))
goto mplistunlock;
+ trace_xfs_dqreclaim_unlink(dqp);
+
ASSERT(dqp->q_nrefs == 0);
- xfs_dqtrace_entry(dqp, "DQRECLAIM: UNLINKING");
XQM_MPLIST_REMOVE(&(XFS_QI_MPL_LIST(dqp->q_mount)), dqp);
XQM_HASHLIST_REMOVE(dqp->q_hash, dqp);
XQM_FREELIST_REMOVE(dqp);
@@ -2430,7 +2442,7 @@ xfs_qm_vop_dqalloc(
}
}
if (uq)
- xfs_dqtrace_entry_ino(uq, "DQALLOC", ip);
+ trace_xfs_dquot_dqalloc(ip);
xfs_iunlock(ip, lockflags);
if (O_udqpp)