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Allocate UMA per-CPU counters earlier.

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Otherwise anything counted before SI_SUB_VM_CONF is discarded.  However,
it is useful to be able to see stats from allocations done early during
boot.

Reviewed by:	kib
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D24756
This commit is contained in:
markj 2020-05-14 16:06:54 +00:00
parent 1c610e1dd6
commit a3d3a9cab1
1 changed files with 19 additions and 7 deletions
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26
sys/vm/uma_core.c
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@ -192,6 +192,7 @@ SYSCTL_ULONG(_vm, OID_AUTO, uma_kmem_total, CTLFLAG_RD, &uma_kmem_total, 0,
static enum {
BOOT_COLD,
BOOT_KVA,
BOOT_PCPU,
BOOT_RUNNING,
BOOT_SHUTDOWN,
} booted = BOOT_COLD;
@ -304,7 +305,6 @@ static int hash_alloc(struct uma_hash *, u_int);
static int hash_expand(struct uma_hash *, struct uma_hash *);
static void hash_free(struct uma_hash *hash);
static void uma_timeout(void *);
static void uma_startup3(void);
static void uma_shutdown(void);
static void *zone_alloc_item(uma_zone_t, void *, int, int);
static void zone_free_item(uma_zone_t, void *, void *, enum zfreeskip);
@ -360,8 +360,6 @@ SYSCTL_COUNTER_U64(_vm_debug, OID_AUTO, skipped, CTLFLAG_RD,
&uma_skip_cnt, "memory items skipped, not debugged");
#endif
SYSINIT(uma_startup3, SI_SUB_VM_CONF, SI_ORDER_SECOND, uma_startup3, NULL);
SYSCTL_NODE(_vm, OID_AUTO, uma, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
"Universal Memory Allocator");
@ -2658,9 +2656,10 @@ zone_ctor(void *mem, int size, void *udata, int flags)
(UMA_ZONE_INHERIT | UMA_ZFLAG_INHERIT));
out:
if (__predict_true(booted >= BOOT_RUNNING)) {
if (booted >= BOOT_PCPU) {
zone_alloc_counters(zone, NULL);
zone_alloc_sysctl(zone, NULL);
if (booted >= BOOT_RUNNING)
zone_alloc_sysctl(zone, NULL);
} else {
zone->uz_allocs = EARLY_COUNTER;
zone->uz_frees = EARLY_COUNTER;
@ -2903,11 +2902,24 @@ uma_startup2(void)
bucket_enable();
}
/*
* Allocate counters as early as possible so that boot-time allocations are
* accounted more precisely.
*/
static void
uma_startup_pcpu(void *arg __unused)
{
zone_foreach_unlocked(zone_alloc_counters, NULL);
booted = BOOT_PCPU;
}
SYSINIT(uma_startup_pcpu, SI_SUB_COUNTER, SI_ORDER_ANY, uma_startup_pcpu, NULL);
/*
* Finish our initialization steps.
*/
static void
uma_startup3(void)
uma_startup3(void *arg __unused)
{
#ifdef INVARIANTS
@ -2915,7 +2927,6 @@ uma_startup3(void)
uma_dbg_cnt = counter_u64_alloc(M_WAITOK);
uma_skip_cnt = counter_u64_alloc(M_WAITOK);
#endif
zone_foreach_unlocked(zone_alloc_counters, NULL);
zone_foreach_unlocked(zone_alloc_sysctl, NULL);
callout_init(&uma_callout, 1);
callout_reset(&uma_callout, UMA_TIMEOUT * hz, uma_timeout, NULL);
@ -2924,6 +2935,7 @@ uma_startup3(void)
EVENTHANDLER_REGISTER(shutdown_post_sync, uma_shutdown, NULL,
EVENTHANDLER_PRI_FIRST);
}
SYSINIT(uma_startup3, SI_SUB_VM_CONF, SI_ORDER_SECOND, uma_startup3, NULL);
static void
uma_shutdown(void)