renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-17 01:34:00 +08:00
Code

xfs: add tracepoints for the deferred ops mechanism

Browse Source 
Add tracepoints for the internals of the deferred ops mechanism
and tracepoint classes for clients of the dops, to make debugging
easier.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Darrick J. Wong 2016-08-03 11:13:02 +10:00 committed by Dave Chinner
parent 4e0cc29b91
commit 3cd48abcc1
3 changed files with 218 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
fs/xfs/libxfs/xfs_defer.c
View File

@ -159,6 +159,7 @@ xfs_defer_intake_work(
struct xfs_defer_pending *dfp;
list_for_each_entry(dfp, &dop->dop_intake, dfp_list) {
trace_xfs_defer_intake_work(tp->t_mountp, dfp);
dfp->dfp_intent = dfp->dfp_type->create_intent(tp,
dfp->dfp_count);
list_sort(tp->t_mountp, &dfp->dfp_work,
@ -179,6 +180,7 @@ xfs_defer_trans_abort(
{
struct xfs_defer_pending *dfp;
trace_xfs_defer_trans_abort(tp->t_mountp, dop);
/*
* If the transaction was committed, drop the intent reference
* since we're bailing out of here. The other reference is
@ -191,6 +193,7 @@ xfs_defer_trans_abort(
/* Abort intent items. */
list_for_each_entry(dfp, &dop->dop_pending, dfp_list) {
trace_xfs_defer_pending_abort(tp->t_mountp, dfp);
if (dfp->dfp_committed)
dfp->dfp_type->abort_intent(dfp->dfp_intent);
}
@ -217,9 +220,12 @@ xfs_defer_trans_roll(
xfs_trans_log_inode(*tp, dop->dop_inodes[i], XFS_ILOG_CORE);
}
trace_xfs_defer_trans_roll((*tp)->t_mountp, dop);
/* Roll the transaction. */
error = xfs_trans_roll(tp, ip);
if (error) {
trace_xfs_defer_trans_roll_error((*tp)->t_mountp, dop, error);
xfs_defer_trans_abort(*tp, dop, error);
return error;
}
@ -291,6 +297,8 @@ xfs_defer_finish(
ASSERT((*tp)->t_flags & XFS_TRANS_PERM_LOG_RES);
trace_xfs_defer_finish((*tp)->t_mountp, dop);
/* Until we run out of pending work to finish... */
while (xfs_defer_has_unfinished_work(dop)) {
/* Log intents for work items sitting in the intake. */
@ -305,12 +313,14 @@ xfs_defer_finish(
list_for_each_entry_reverse(dfp, &dop->dop_pending, dfp_list) {
if (dfp->dfp_committed)
break;
trace_xfs_defer_pending_commit((*tp)->t_mountp, dfp);
dfp->dfp_committed = true;
}
/* Log an intent-done item for the first pending item. */
dfp = list_first_entry(&dop->dop_pending,
struct xfs_defer_pending, dfp_list);
trace_xfs_defer_pending_finish((*tp)->t_mountp, dfp);
done_item = dfp->dfp_type->create_done(*tp, dfp->dfp_intent,
dfp->dfp_count);
cleanup_fn = dfp->dfp_type->finish_cleanup;
@ -343,6 +353,10 @@ xfs_defer_finish(
}
out:
if (error)
trace_xfs_defer_finish_error((*tp)->t_mountp, dop, error);
else
trace_xfs_defer_finish_done((*tp)->t_mountp, dop);
return error;
}
@ -358,11 +372,14 @@ xfs_defer_cancel(
struct list_head *pwi;
struct list_head *n;
trace_xfs_defer_cancel(NULL, dop);
/*
* Free the pending items. Caller should already have arranged
* for the intent items to be released.
*/
list_for_each_entry_safe(dfp, pli, &dop->dop_intake, dfp_list) {
trace_xfs_defer_intake_cancel(NULL, dfp);
list_del(&dfp->dfp_list);
list_for_each_safe(pwi, n, &dfp->dfp_work) {
list_del(pwi);
@ -373,6 +390,7 @@ xfs_defer_cancel(
kmem_free(dfp);
}
list_for_each_entry_safe(dfp, pli, &dop->dop_pending, dfp_list) {
trace_xfs_defer_pending_cancel(NULL, dfp);
list_del(&dfp->dfp_list);
list_for_each_safe(pwi, n, &dfp->dfp_work) {
list_del(pwi);
@ -441,4 +459,5 @@ xfs_defer_init(
*fbp = NULLFSBLOCK;
INIT_LIST_HEAD(&dop->dop_intake);
INIT_LIST_HEAD(&dop->dop_pending);
trace_xfs_defer_init(NULL, dop);
}

1
fs/xfs/xfs_trace.c
View File

@ -22,6 +22,7 @@
#include "xfs_log_format.h"
#include "xfs_trans_resv.h"
#include "xfs_mount.h"
#include "xfs_defer.h"
#include "xfs_da_format.h"
#include "xfs_inode.h"
#include "xfs_btree.h"

198
fs/xfs/xfs_trace.h
View File

@ -2222,6 +2222,204 @@ DEFINE_EVENT(xfs_btree_cur_class, name, \
DEFINE_BTREE_CUR_EVENT(xfs_btree_updkeys);
DEFINE_BTREE_CUR_EVENT(xfs_btree_overlapped_query_range);
/* deferred ops */
struct xfs_defer_pending;
struct xfs_defer_intake;
struct xfs_defer_ops;
DECLARE_EVENT_CLASS(xfs_defer_class,
TP_PROTO(struct xfs_mount *mp, struct xfs_defer_ops *dop),
TP_ARGS(mp, dop),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(void *, dop)
__field(bool, committed)
__field(bool, low)
),
TP_fast_assign(
__entry->dev = mp ? mp->m_super->s_dev : 0;
__entry->dop = dop;
__entry->committed = dop->dop_committed;
__entry->low = dop->dop_low;
),
TP_printk("dev %d:%d ops %p committed %d low %d\n",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->dop,
__entry->committed,
__entry->low)
)
#define DEFINE_DEFER_EVENT(name) \
DEFINE_EVENT(xfs_defer_class, name, \
TP_PROTO(struct xfs_mount *mp, struct xfs_defer_ops *dop), \
TP_ARGS(mp, dop))
DECLARE_EVENT_CLASS(xfs_defer_error_class,
TP_PROTO(struct xfs_mount *mp, struct xfs_defer_ops *dop, int error),
TP_ARGS(mp, dop, error),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(void *, dop)
__field(bool, committed)
__field(bool, low)
__field(int, error)
),
TP_fast_assign(
__entry->dev = mp ? mp->m_super->s_dev : 0;
__entry->dop = dop;
__entry->committed = dop->dop_committed;
__entry->low = dop->dop_low;
__entry->error = error;
),
TP_printk("dev %d:%d ops %p committed %d low %d err %d\n",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->dop,
__entry->committed,
__entry->low,
__entry->error)
)
#define DEFINE_DEFER_ERROR_EVENT(name) \
DEFINE_EVENT(xfs_defer_error_class, name, \
TP_PROTO(struct xfs_mount *mp, struct xfs_defer_ops *dop, int error), \
TP_ARGS(mp, dop, error))
DECLARE_EVENT_CLASS(xfs_defer_pending_class,
TP_PROTO(struct xfs_mount *mp, struct xfs_defer_pending *dfp),
TP_ARGS(mp, dfp),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(int, type)
__field(void *, intent)
__field(bool, committed)
__field(int, nr)
),
TP_fast_assign(
__entry->dev = mp ? mp->m_super->s_dev : 0;
__entry->type = dfp->dfp_type->type;
__entry->intent = dfp->dfp_intent;
__entry->committed = dfp->dfp_committed;
__entry->nr = dfp->dfp_count;
),
TP_printk("dev %d:%d optype %d intent %p committed %d nr %d\n",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->type,
__entry->intent,
__entry->committed,
__entry->nr)
)
#define DEFINE_DEFER_PENDING_EVENT(name) \
DEFINE_EVENT(xfs_defer_pending_class, name, \
TP_PROTO(struct xfs_mount *mp, struct xfs_defer_pending *dfp), \
TP_ARGS(mp, dfp))
DECLARE_EVENT_CLASS(xfs_phys_extent_deferred_class,
TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno,
int type, xfs_agblock_t agbno, xfs_extlen_t len),
TP_ARGS(mp, agno, type, agbno, len),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(xfs_agnumber_t, agno)
__field(int, type)
__field(xfs_agblock_t, agbno)
__field(xfs_extlen_t, len)
),
TP_fast_assign(
__entry->dev = mp->m_super->s_dev;
__entry->agno = agno;
__entry->type = type;
__entry->agbno = agbno;
__entry->len = len;
),
TP_printk("dev %d:%d op %d agno %u agbno %u len %u",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->type,
__entry->agno,
__entry->agbno,
__entry->len)
);
#define DEFINE_PHYS_EXTENT_DEFERRED_EVENT(name) \
DEFINE_EVENT(xfs_phys_extent_deferred_class, name, \
TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, \
int type, \
xfs_agblock_t bno, \
xfs_extlen_t len), \
TP_ARGS(mp, agno, type, bno, len))
DECLARE_EVENT_CLASS(xfs_map_extent_deferred_class,
TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno,
int op,
xfs_agblock_t agbno,
xfs_ino_t ino,
int whichfork,
xfs_fileoff_t offset,
xfs_filblks_t len,
xfs_exntst_t state),
TP_ARGS(mp, agno, op, agbno, ino, whichfork, offset, len, state),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(xfs_agnumber_t, agno)
__field(xfs_ino_t, ino)
__field(xfs_agblock_t, agbno)
__field(int, whichfork)
__field(xfs_fileoff_t, l_loff)
__field(xfs_filblks_t, l_len)
__field(xfs_exntst_t, l_state)
__field(int, op)
),
TP_fast_assign(
__entry->dev = mp->m_super->s_dev;
__entry->agno = agno;
__entry->ino = ino;
__entry->agbno = agbno;
__entry->whichfork = whichfork;
__entry->l_loff = offset;
__entry->l_len = len;
__entry->l_state = state;
__entry->op = op;
),
TP_printk("dev %d:%d op %d agno %u agbno %u owner %lld %s offset %llu len %llu state %d",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->op,
__entry->agno,
__entry->agbno,
__entry->ino,
__entry->whichfork == XFS_ATTR_FORK ? "attr" : "data",
__entry->l_loff,
__entry->l_len,
__entry->l_state)
);
#define DEFINE_MAP_EXTENT_DEFERRED_EVENT(name) \
DEFINE_EVENT(xfs_map_extent_deferred_class, name, \
TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, \
int op, \
xfs_agblock_t agbno, \
xfs_ino_t ino, \
int whichfork, \
xfs_fileoff_t offset, \
xfs_filblks_t len, \
xfs_exntst_t state), \
TP_ARGS(mp, agno, op, agbno, ino, whichfork, offset, len, state))
DEFINE_DEFER_EVENT(xfs_defer_init);
DEFINE_DEFER_EVENT(xfs_defer_cancel);
DEFINE_DEFER_EVENT(xfs_defer_trans_roll);
DEFINE_DEFER_EVENT(xfs_defer_trans_abort);
DEFINE_DEFER_EVENT(xfs_defer_finish);
DEFINE_DEFER_EVENT(xfs_defer_finish_done);
DEFINE_DEFER_ERROR_EVENT(xfs_defer_trans_roll_error);
DEFINE_DEFER_ERROR_EVENT(xfs_defer_finish_error);
DEFINE_DEFER_ERROR_EVENT(xfs_defer_op_finish_error);
DEFINE_DEFER_PENDING_EVENT(xfs_defer_intake_work);
DEFINE_DEFER_PENDING_EVENT(xfs_defer_intake_cancel);
DEFINE_DEFER_PENDING_EVENT(xfs_defer_pending_commit);
DEFINE_DEFER_PENDING_EVENT(xfs_defer_pending_cancel);
DEFINE_DEFER_PENDING_EVENT(xfs_defer_pending_finish);
DEFINE_DEFER_PENDING_EVENT(xfs_defer_pending_abort);
DEFINE_PHYS_EXTENT_DEFERRED_EVENT(xfs_defer_phys_extent);
DEFINE_MAP_EXTENT_DEFERRED_EVENT(xfs_defer_map_extent);
#endif /* _TRACE_XFS_H */
#undef TRACE_INCLUDE_PATH