diff options
| author | Christoph Hellwig <hch@lst.de> | 2025-02-09 06:08:20 +0100 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2025-03-03 08:16:43 -0700 |
| commit | a0760cca8e1007be7bfa154004e566b2a4fbcd71 (patch) | |
| tree | 71b8d3d59b738e9b621968b9bbac009c79c5f4eb | |
| parent | c8c4e8bc692ae0cd062eaabf99ff9d0d143a6370 (diff) | |
xfs: trace in-memory freecounter reservations
Add two tracepoints when the freecounter dips into the reserved pool
and when it is entirely out of space.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
| -rw-r--r-- | fs/xfs/xfs_mount.c | 2 | ||||
| -rw-r--r-- | fs/xfs/xfs_trace.h | 39 |
2 files changed, 41 insertions, 0 deletions
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index 01f387784039..a77a2de11278 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -1341,6 +1341,7 @@ xfs_dec_freecounter( goto fdblocks_enospc; } counter->res_avail -= delta; + trace_xfs_freecounter_reserved(mp, ctr, delta, _RET_IP_); spin_unlock(&mp->m_sb_lock); } @@ -1348,6 +1349,7 @@ xfs_dec_freecounter( return 0; fdblocks_enospc: + trace_xfs_freecounter_enospc(mp, ctr, delta, _RET_IP_); spin_unlock(&mp->m_sb_lock); return -ENOSPC; } diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h index f97129f01b48..dc4d3e913b17 100644 --- a/fs/xfs/xfs_trace.h +++ b/fs/xfs/xfs_trace.h @@ -5669,6 +5669,45 @@ TRACE_EVENT(xfs_growfs_check_rtgeom, ); #endif /* CONFIG_XFS_RT */ +TRACE_DEFINE_ENUM(XC_FREE_BLOCKS); +TRACE_DEFINE_ENUM(XC_FREE_RTEXTENTS); + +DECLARE_EVENT_CLASS(xfs_freeblocks_resv_class, + TP_PROTO(struct xfs_mount *mp, enum xfs_free_counter ctr, + uint64_t delta, unsigned long caller_ip), + TP_ARGS(mp, ctr, delta, caller_ip), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(enum xfs_free_counter, ctr) + __field(uint64_t, delta) + __field(uint64_t, avail) + __field(uint64_t, total) + __field(unsigned long, caller_ip) + ), + TP_fast_assign( + __entry->dev = mp->m_super->s_dev; + __entry->ctr = ctr; + __entry->delta = delta; + __entry->avail = mp->m_free[ctr].res_avail; + __entry->total = mp->m_free[ctr].res_total; + __entry->caller_ip = caller_ip; + ), + TP_printk("dev %d:%d ctr %s delta %llu avail %llu total %llu caller %pS", + MAJOR(__entry->dev), MINOR(__entry->dev), + __print_symbolic(__entry->ctr, XFS_FREECOUNTER_STR), + __entry->delta, + __entry->avail, + __entry->total, + (char *)__entry->caller_ip) +) +#define DEFINE_FREEBLOCKS_RESV_EVENT(name) \ +DEFINE_EVENT(xfs_freeblocks_resv_class, name, \ + TP_PROTO(struct xfs_mount *mp, enum xfs_free_counter ctr, \ + uint64_t delta, unsigned long caller_ip), \ + TP_ARGS(mp, ctr, delta, caller_ip)) +DEFINE_FREEBLOCKS_RESV_EVENT(xfs_freecounter_reserved); +DEFINE_FREEBLOCKS_RESV_EVENT(xfs_freecounter_enospc); + #endif /* _TRACE_XFS_H */ #undef TRACE_INCLUDE_PATH |