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Differential D23978 Diff 69275 head/sys/kern/vfs_cache.c

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head/sys/kern/vfs_cache.c

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SYSCTL_INT(_debug_sizeof, OID_AUTO, namecache, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, SYSCTL_INT(_debug_sizeof, OID_AUTO, namecache, CTLFLAG_RD, SYSCTL_NULL_INT_PTR,
sizeof(struct namecache), "sizeof(struct namecache)"); sizeof(struct namecache), "sizeof(struct namecache)");
/* /*
* The new name cache statistics * The new name cache statistics
*/ */
static SYSCTL_NODE(_vfs, OID_AUTO, cache, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, static SYSCTL_NODE(_vfs, OID_AUTO, cache, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
"Name cache statistics"); "Name cache statistics");
#define STATNODE_ULONG(name, descr) \ #define STATNODE_ULONG(name, descr) \
SYSCTL_ULONG(_vfs_cache, OID_AUTO, name, CTLFLAG_RD, &name, 0, descr); SYSCTL_ULONG(_vfs_cache, OID_AUTO, name, CTLFLAG_RD, &name, 0, descr);
#define STATNODE_COUNTER(name, descr) \ #define STATNODE_COUNTER(name, descr) \
static counter_u64_t __read_mostly name; \ static COUNTER_U64_DEFINE_EARLY(name); \
SYSCTL_COUNTER_U64(_vfs_cache, OID_AUTO, name, CTLFLAG_RD, &name, descr); SYSCTL_COUNTER_U64(_vfs_cache, OID_AUTO, name, CTLFLAG_RD, &name, \
descr);
STATNODE_ULONG(numneg, "Number of negative cache entries"); STATNODE_ULONG(numneg, "Number of negative cache entries");
STATNODE_ULONG(numcache, "Number of cache entries"); STATNODE_ULONG(numcache, "Number of cache entries");
STATNODE_COUNTER(numcachehv, "Number of namecache entries with vnodes held"); STATNODE_COUNTER(numcachehv, "Number of namecache entries with vnodes held");
STATNODE_COUNTER(numcalls, "Number of cache lookups"); STATNODE_COUNTER(numcalls, "Number of cache lookups");
STATNODE_COUNTER(dothits, "Number of '.' hits"); STATNODE_COUNTER(dothits, "Number of '.' hits");
STATNODE_COUNTER(dotdothits, "Number of '..' hits"); STATNODE_COUNTER(dotdothits, "Number of '..' hits");
STATNODE_COUNTER(numchecks, "Number of checks in lookup"); STATNODE_COUNTER(numchecks, "Number of checks in lookup");
STATNODE_COUNTER(nummiss, "Number of cache misses"); STATNODE_COUNTER(nummiss, "Number of cache misses");
▲ Show 20 Lines • Show All 1,570 Lines • ▼ Show 20 Linesnchinit(void *dummy __unused)
for (i = 0; i < numneglists; i++) { for (i = 0; i < numneglists; i++) {
mtx_init(&neglists[i].nl_lock, "ncnegl", NULL, MTX_DEF); mtx_init(&neglists[i].nl_lock, "ncnegl", NULL, MTX_DEF);
TAILQ_INIT(&neglists[i].nl_list); TAILQ_INIT(&neglists[i].nl_list);
} }
mtx_init(&ncneg_hot.nl_lock, "ncneglh", NULL, MTX_DEF); mtx_init(&ncneg_hot.nl_lock, "ncneglh", NULL, MTX_DEF);
TAILQ_INIT(&ncneg_hot.nl_list); TAILQ_INIT(&ncneg_hot.nl_list);
mtx_init(&ncneg_shrink_lock, "ncnegs", NULL, MTX_DEF); mtx_init(&ncneg_shrink_lock, "ncnegs", NULL, MTX_DEF);
numcachehv = counter_u64_alloc(M_WAITOK);
numcalls = counter_u64_alloc(M_WAITOK);
dothits = counter_u64_alloc(M_WAITOK);
dotdothits = counter_u64_alloc(M_WAITOK);
numchecks = counter_u64_alloc(M_WAITOK);
nummiss = counter_u64_alloc(M_WAITOK);
nummisszap = counter_u64_alloc(M_WAITOK);
numposzaps = counter_u64_alloc(M_WAITOK);
numposhits = counter_u64_alloc(M_WAITOK);
numnegzaps = counter_u64_alloc(M_WAITOK);
numneghits = counter_u64_alloc(M_WAITOK);
numfullpathcalls = counter_u64_alloc(M_WAITOK);
numfullpathfail1 = counter_u64_alloc(M_WAITOK);
numfullpathfail2 = counter_u64_alloc(M_WAITOK);
numfullpathfail4 = counter_u64_alloc(M_WAITOK);
numfullpathfound = counter_u64_alloc(M_WAITOK);
zap_and_exit_bucket_relock_success = counter_u64_alloc(M_WAITOK);
numneg_evicted = counter_u64_alloc(M_WAITOK);
shrinking_skipped = counter_u64_alloc(M_WAITOK);
} }
SYSINIT(vfs, SI_SUB_VFS, SI_ORDER_SECOND, nchinit, NULL); SYSINIT(vfs, SI_SUB_VFS, SI_ORDER_SECOND, nchinit, NULL);
void void
cache_changesize(u_long newmaxvnodes) cache_changesize(u_long newmaxvnodes)
{ {
struct nchashhead *new_nchashtbl, *old_nchashtbl; struct nchashhead *new_nchashtbl, *old_nchashtbl;
u_long new_nchash, old_nchash; u_long new_nchash, old_nchash;
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