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xfs: add sysfs stats for zoned GC

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Add counters of read, write and zone_reset operations as well as
GC written bytes to sysfs.  This way they can be easily used for
monitoring tools and test cases.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Hans Holmberg <hans.holmberg@wdc.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
This commit is contained in:
Christoph Hellwig 2026-01-30 06:19:26 +01:00 committed by Carlos Maiolino
parent edf6078212
commit e33839b514
3 changed files with 18 additions and 1 deletions
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6
fs/xfs/xfs_stats.c
View File

@ -24,6 +24,7 @@ int xfs_stats_format(struct xfsstats __percpu *stats, char *buf)
uint64_t xs_write_bytes = 0;
uint64_t xs_read_bytes = 0;
uint64_t xs_defer_relog = 0;
uint64_t xs_gc_bytes = 0;
static const struct xstats_entry {
char *desc;
@ -57,7 +58,8 @@ int xfs_stats_format(struct xfsstats __percpu *stats, char *buf)
{ "rtrmapbt_mem", xfsstats_offset(xs_rtrefcbt_2) },
{ "rtrefcntbt", xfsstats_offset(xs_qm_dqreclaims)},
/* we print both series of quota information together */
{ "qm", xfsstats_offset(xs_xstrat_bytes)},
{ "qm", xfsstats_offset(xs_gc_read_calls)},
{ "zoned", xfsstats_offset(__pad1)},
};
/* Loop over all stats groups */
@ -77,6 +79,7 @@ int xfs_stats_format(struct xfsstats __percpu *stats, char *buf)
xs_write_bytes += per_cpu_ptr(stats, i)->s.xs_write_bytes;
xs_read_bytes += per_cpu_ptr(stats, i)->s.xs_read_bytes;
xs_defer_relog += per_cpu_ptr(stats, i)->s.xs_defer_relog;
xs_gc_bytes += per_cpu_ptr(stats, i)->s.xs_gc_bytes;
}
len += scnprintf(buf + len, PATH_MAX-len, "xpc %llu %llu %llu\n",
@ -89,6 +92,7 @@ int xfs_stats_format(struct xfsstats __percpu *stats, char *buf)
#else
0);
#endif
len += scnprintf(buf + len, PATH_MAX-len, "gc xpc %llu\n", xs_gc_bytes);
return len;
}

6
fs/xfs/xfs_stats.h
View File

@ -138,11 +138,17 @@ struct __xfsstats {
uint32_t xs_qm_dqwants;
uint32_t xs_qm_dquot;
uint32_t xs_qm_dquot_unused;
/* Zone GC counters */
uint32_t xs_gc_read_calls;
uint32_t xs_gc_write_calls;
uint32_t xs_gc_zone_reset_calls;
uint32_t __pad1;
/* Extra precision counters */
uint64_t xs_xstrat_bytes;
uint64_t xs_write_bytes;
uint64_t xs_read_bytes;
uint64_t xs_defer_relog;
uint64_t xs_gc_bytes;
};
#define xfsstats_offset(f) (offsetof(struct __xfsstats, f)/sizeof(uint32_t))

7
fs/xfs/xfs_zone_gc.c
View File

@ -712,6 +712,8 @@ xfs_zone_gc_start_chunk(
data->scratch_head = (data->scratch_head + len) % data->scratch_size;
data->scratch_available -= len;
XFS_STATS_INC(mp, xs_gc_read_calls);
WRITE_ONCE(chunk->state, XFS_GC_BIO_NEW);
list_add_tail(&chunk->entry, &data->reading);
xfs_zone_gc_iter_advance(iter, irec.rm_blockcount);
@ -815,6 +817,9 @@ xfs_zone_gc_write_chunk(
return;
}
XFS_STATS_INC(mp, xs_gc_write_calls);
XFS_STATS_ADD(mp, xs_gc_bytes, chunk->len);
WRITE_ONCE(chunk->state, XFS_GC_BIO_NEW);
list_move_tail(&chunk->entry, &data->writing);
@ -911,6 +916,8 @@ xfs_submit_zone_reset_bio(
return;
}
XFS_STATS_INC(mp, xs_gc_zone_reset_calls);
bio->bi_iter.bi_sector = xfs_gbno_to_daddr(&rtg->rtg_group, 0);
if (!bdev_zone_is_seq(bio->bi_bdev, bio->bi_iter.bi_sector)) {
/*