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| author | Mateusz Guzik <mjg@FreeBSD.org> | 2021-09-18 08:30:15 +0000 |
|---|---|---|
| committer | Mateusz Guzik <mjg@FreeBSD.org> | 2021-09-18 10:16:50 +0000 |
| commit | a2cb65b8fe975a8f228258e3057b62e068dbf8e2 (patch) | |
| tree | 0978dd975309cde8ace66c6a656ba1815aeba8cb | |
| parent | 5d8e32a66c1700323c570d25b03672f35f4e0110 (diff) | |
| download | src-a2cb65b8fe975a8f228258e3057b62e068dbf8e2.tar.gz src-a2cb65b8fe975a8f228258e3057b62e068dbf8e2.zip | |
cache: count vnodes in cache_purgevfs
| -rw-r--r-- | sys/kern/vfs_cache.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/sys/kern/vfs_cache.c b/sys/kern/vfs_cache.c index 732dbbe53cef..3c79395f5d92 100644 --- a/sys/kern/vfs_cache.c +++ b/sys/kern/vfs_cache.c @@ -237,7 +237,7 @@ SDT_PROBE_DEFINE2(vfs, namecache, removecnp, hit, "struct vnode *", "struct componentname *"); SDT_PROBE_DEFINE2(vfs, namecache, removecnp, miss, "struct vnode *", "struct componentname *"); -SDT_PROBE_DEFINE1(vfs, namecache, purge, done, "struct vnode *"); +SDT_PROBE_DEFINE3(vfs, namecache, purge, done, "struct vnode *", "size_t", "size_t"); SDT_PROBE_DEFINE1(vfs, namecache, purge, batch, "int"); SDT_PROBE_DEFINE1(vfs, namecache, purge_negative, done, "struct vnode *"); SDT_PROBE_DEFINE1(vfs, namecache, purgevfs, done, "struct mount *"); @@ -3012,13 +3012,15 @@ void cache_purgevfs(struct mount *mp) { struct vnode *vp, *mvp; + size_t visited, purged; - SDT_PROBE1(vfs, namecache, purgevfs, done, mp); + visited = purged = 0; /* * Somewhat wasteful iteration over all vnodes. Would be better to * support filtering and avoid the interlock to begin with. */ MNT_VNODE_FOREACH_ALL(vp, mp, mvp) { + visited++; if (!cache_has_entries(vp)) { VI_UNLOCK(vp); continue; @@ -3026,8 +3028,11 @@ cache_purgevfs(struct mount *mp) vholdl(vp); VI_UNLOCK(vp); cache_purge(vp); + purged++; vdrop(vp); } + + SDT_PROBE3(vfs, namecache, purgevfs, done, mp, visited, purged); } /* |