hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

xfs: add tracepoints to AGF/AGI read operations 

To help track down AGI/AGF lock ordering issues, I added these
tracepoints to tell us when an AGI or AGF is read and locked.  With
these we can now determine if the lock ordering goes wrong from
tracing captures.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Myers <bpm@sgi.com>
This commit is contained in:
Dave Chinner 2013-11-01 15:27:19 +11:00 committed by Ben Myers
parent 750b9c9066
commit d123031a56
3 changed files with 34 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
fs/xfs/xfs_alloc.c
View File

@ -2294,6 +2294,8 @@ xfs_read_agf(
{ {
int error; int error;
trace_xfs_read_agf(mp, agno);
ASSERT(agno != NULLAGNUMBER); ASSERT(agno != NULLAGNUMBER);
error = xfs_trans_read_buf( error = xfs_trans_read_buf(
mp, tp, mp->m_ddev_targp, mp, tp, mp->m_ddev_targp,
@ -2324,8 +2326,9 @@ xfs_alloc_read_agf(
struct xfs_perag *pag; /* per allocation group data */ struct xfs_perag *pag; /* per allocation group data */
int error; int error;
ASSERT(agno != NULLAGNUMBER); trace_xfs_alloc_read_agf(mp, agno);
ASSERT(agno != NULLAGNUMBER);
error = xfs_read_agf(mp, tp, agno, error = xfs_read_agf(mp, tp, agno,
(flags & XFS_ALLOC_FLAG_TRYLOCK) ? XBF_TRYLOCK : 0, (flags & XFS_ALLOC_FLAG_TRYLOCK) ? XBF_TRYLOCK : 0,
bpp); bpp);

6
fs/xfs/xfs_ialloc.c
View File

@ -40,6 +40,7 @@
#include "xfs_icreate_item.h" #include "xfs_icreate_item.h"
#include "xfs_icache.h" #include "xfs_icache.h"
#include "xfs_dinode.h" #include "xfs_dinode.h"
#include "xfs_trace.h"
/* /*
@ -1627,8 +1628,9 @@ xfs_read_agi(
{ {
int error; int error;
ASSERT(agno != NULLAGNUMBER); trace_xfs_read_agi(mp, agno);
ASSERT(agno != NULLAGNUMBER);
error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp,
XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)), XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)),
XFS_FSS_TO_BB(mp, 1), 0, bpp, &xfs_agi_buf_ops); XFS_FSS_TO_BB(mp, 1), 0, bpp, &xfs_agi_buf_ops);
@ -1651,6 +1653,8 @@ xfs_ialloc_read_agi(
struct xfs_perag *pag; /* per allocation group data */ struct xfs_perag *pag; /* per allocation group data */
int error; int error;
trace_xfs_ialloc_read_agi(mp, agno);
error = xfs_read_agi(mp, tp, agno, bpp); error = xfs_read_agi(mp, tp, agno, bpp);
if (error) if (error)
return error; return error;

25
fs/xfs/xfs_trace.h
View File

@ -135,6 +135,31 @@ DEFINE_PERAG_REF_EVENT(xfs_perag_clear_reclaim);
DEFINE_PERAG_REF_EVENT(xfs_perag_set_eofblocks); DEFINE_PERAG_REF_EVENT(xfs_perag_set_eofblocks);
DEFINE_PERAG_REF_EVENT(xfs_perag_clear_eofblocks); DEFINE_PERAG_REF_EVENT(xfs_perag_clear_eofblocks);
DECLARE_EVENT_CLASS(xfs_ag_class,
TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno),
TP_ARGS(mp, agno),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(xfs_agnumber_t, agno)
),
TP_fast_assign(
__entry->dev = mp->m_super->s_dev;
__entry->agno = agno;
),
TP_printk("dev %d:%d agno %u",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->agno)
);
#define DEFINE_AG_EVENT(name) \
DEFINE_EVENT(xfs_ag_class, name, \
TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno), \
TP_ARGS(mp, agno))
DEFINE_AG_EVENT(xfs_read_agf);
DEFINE_AG_EVENT(xfs_alloc_read_agf);
DEFINE_AG_EVENT(xfs_read_agi);
DEFINE_AG_EVENT(xfs_ialloc_read_agi);
TRACE_EVENT(xfs_attr_list_node_descend, TRACE_EVENT(xfs_attr_list_node_descend,
TP_PROTO(struct xfs_attr_list_context *ctx, TP_PROTO(struct xfs_attr_list_context *ctx,
struct xfs_da_node_entry *btree), struct xfs_da_node_entry *btree),