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xfs: add a tracepoint for blockgc scans

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Add some tracepoints so that we can observe when the speculative
preallocation garbage collector runs.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
This commit is contained in:
Darrick J. Wong 2021-01-22 16:48:38 -08:00
parent 758303d144
commit 38899f8099
3 changed files with 44 additions and 0 deletions
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2
fs/xfs/xfs_ioctl.c
View File

@ -2339,6 +2339,8 @@ xfs_file_ioctl(
if (error)
return error;
trace_xfs_ioc_free_eofblocks(mp, &keofb, _RET_IP_);
sb_start_write(mp->m_super);
error = xfs_icache_free_eofblocks(mp, &keofb);
sb_end_write(mp->m_super);

1
fs/xfs/xfs_trace.c
View File

@ -29,6 +29,7 @@
#include "xfs_filestream.h"
#include "xfs_fsmap.h"
#include "xfs_btree_staging.h"
#include "xfs_icache.h"
/*
* We include this last to have the helpers above available for the trace

41
fs/xfs/xfs_trace.h
View File

@ -37,6 +37,7 @@ struct xfs_trans_res;
struct xfs_inobt_rec_incore;
union xfs_btree_ptr;
struct xfs_dqtrx;
struct xfs_eofblocks;
#define XFS_ATTR_FILTER_FLAGS \
{ XFS_ATTR_ROOT, "ROOT" }, \
@ -3888,6 +3889,46 @@ DEFINE_EVENT(xfs_timestamp_range_class, name, \
DEFINE_TIMESTAMP_RANGE_EVENT(xfs_inode_timestamp_range);
DEFINE_TIMESTAMP_RANGE_EVENT(xfs_quota_expiry_range);
DECLARE_EVENT_CLASS(xfs_eofblocks_class,
TP_PROTO(struct xfs_mount *mp, struct xfs_eofblocks *eofb,
unsigned long caller_ip),
TP_ARGS(mp, eofb, caller_ip),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(__u32, flags)
__field(uint32_t, uid)
__field(uint32_t, gid)
__field(prid_t, prid)
__field(__u64, min_file_size)
__field(unsigned long, caller_ip)
),
TP_fast_assign(
__entry->dev = mp->m_super->s_dev;
__entry->flags = eofb ? eofb->eof_flags : 0;
__entry->uid = eofb ? from_kuid(mp->m_super->s_user_ns,
eofb->eof_uid) : 0;
__entry->gid = eofb ? from_kgid(mp->m_super->s_user_ns,
eofb->eof_gid) : 0;
__entry->prid = eofb ? eofb->eof_prid : 0;
__entry->min_file_size = eofb ? eofb->eof_min_file_size : 0;
__entry->caller_ip = caller_ip;
),
TP_printk("dev %d:%d flags 0x%x uid %u gid %u prid %u minsize %llu caller %pS",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->flags,
__entry->uid,
__entry->gid,
__entry->prid,
__entry->min_file_size,
(char *)__entry->caller_ip)
);
#define DEFINE_EOFBLOCKS_EVENT(name) \
DEFINE_EVENT(xfs_eofblocks_class, name, \
TP_PROTO(struct xfs_mount *mp, struct xfs_eofblocks *eofb, \
unsigned long caller_ip), \
TP_ARGS(mp, eofb, caller_ip))
DEFINE_EOFBLOCKS_EVENT(xfs_ioc_free_eofblocks);
#endif /* _TRACE_XFS_H */
#undef TRACE_INCLUDE_PATH