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vfs: count how many times vnlru got woken up due to vnode shortage

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This commit is contained in:
Mateusz Guzik 2023-09-16 17:26:39 +00:00
parent 1a18383a52
commit 9080190b97
1 changed files with 5 additions and 0 deletions
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5
sys/kern/vfs_subr.c
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@ -1477,6 +1477,10 @@ vnlru_recalc(void)
*/
static struct proc *vnlruproc;
static int vnlruproc_sig;
static u_long vnlruproc_kicks;
SYSCTL_ULONG(_vfs_vnode_vnlru, OID_AUTO, kicks, CTLFLAG_RD, &vnlruproc_kicks, 0,
"Number of times vnlru got woken up due to vnode shortage");
/*
* The main freevnodes counter is only updated when a counter local to CPU
@ -1571,6 +1575,7 @@ vnlru_kick_locked(void)
mtx_assert(&vnode_list_mtx, MA_OWNED);
if (vnlruproc_sig == 0) {
vnlruproc_sig = 1;
vnlruproc_kicks++;
wakeup(vnlruproc);
}
}