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| author | Chuck Lever <chuck.lever@oracle.com> | 2022-07-08 21:24:38 +0300 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2022-07-30 03:10:07 +0300 |
| commit | 94660cc19c75083af046b0f8362e3d3bc2eba21d (patch) | |
| tree | a6d60d6529f5de5a7630623010d79a87d50ad317 /fs/nfsd/filecache.c | |
| parent | 39f1d1ff8148902c5692ffb0e1c4479416ab44a7 (diff) | |
| download | linux-94660cc19c75083af046b0f8362e3d3bc2eba21d.tar.xz | |
NFSD: Report the number of items evicted by the LRU walk
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd/filecache.c')
| -rw-r--r-- | fs/nfsd/filecache.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c index 029fb4cfa224..e21dcc5e90ab 100644 --- a/fs/nfsd/filecache.c +++ b/fs/nfsd/filecache.c @@ -46,6 +46,7 @@ static DEFINE_PER_CPU(unsigned long, nfsd_file_cache_hits); static DEFINE_PER_CPU(unsigned long, nfsd_file_acquisitions); static DEFINE_PER_CPU(unsigned long, nfsd_file_releases); static DEFINE_PER_CPU(unsigned long, nfsd_file_total_age); +static DEFINE_PER_CPU(unsigned long, nfsd_file_evictions); struct nfsd_fcache_disposal { struct work_struct work; @@ -446,6 +447,7 @@ nfsd_file_lru_cb(struct list_head *item, struct list_lru_one *lru, goto out_skip; list_lru_isolate_move(lru, &nf->nf_lru, head); + this_cpu_inc(nfsd_file_evictions); return LRU_REMOVED; out_skip: return LRU_SKIP; @@ -476,9 +478,11 @@ static void nfsd_file_gc(void) { LIST_HEAD(dispose); + unsigned long ret; - list_lru_walk(&nfsd_file_lru, nfsd_file_lru_cb, - &dispose, LONG_MAX); + ret = list_lru_walk(&nfsd_file_lru, nfsd_file_lru_cb, + &dispose, LONG_MAX); + trace_nfsd_file_gc_removed(ret, list_lru_count(&nfsd_file_lru)); nfsd_file_gc_dispose_list(&dispose); } @@ -503,6 +507,7 @@ nfsd_file_lru_scan(struct shrinker *s, struct shrink_control *sc) ret = list_lru_shrink_walk(&nfsd_file_lru, sc, nfsd_file_lru_cb, &dispose); + trace_nfsd_file_shrinker_removed(ret, list_lru_count(&nfsd_file_lru)); nfsd_file_gc_dispose_list(&dispose); return ret; } @@ -1065,7 +1070,7 @@ nfsd_file_create(struct svc_rqst *rqstp, struct svc_fh *fhp, */ static int nfsd_file_cache_stats_show(struct seq_file *m, void *v) { - unsigned long hits = 0, acquisitions = 0, releases = 0; + unsigned long hits = 0, acquisitions = 0, releases = 0, evictions = 0; unsigned int i, count = 0, longest = 0; unsigned long lru = 0, total_age = 0; @@ -1089,6 +1094,7 @@ static int nfsd_file_cache_stats_show(struct seq_file *m, void *v) acquisitions += per_cpu(nfsd_file_acquisitions, i); releases += per_cpu(nfsd_file_releases, i); total_age += per_cpu(nfsd_file_total_age, i); + evictions += per_cpu(nfsd_file_evictions, i); } seq_printf(m, "total entries: %u\n", count); @@ -1097,6 +1103,7 @@ static int nfsd_file_cache_stats_show(struct seq_file *m, void *v) seq_printf(m, "cache hits: %lu\n", hits); seq_printf(m, "acquisitions: %lu\n", acquisitions); seq_printf(m, "releases: %lu\n", releases); + seq_printf(m, "evictions: %lu\n", evictions); if (releases) seq_printf(m, "mean age (ms): %ld\n", total_age / releases); else |