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Fixup r244240: mp_ncpus will be 1 also in the !SMP and smp_disabled=1

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case. There is no point in optimizing further the code and use a TRUE
litteral for a path that does heavyweight stuff anyway (like lock acq),
at the price of obfuscated code.

Use the appropriate check where necessary and remove a macro.

Sponsored by:	EMC / Isilon storage division
MFC after:	3 days
This commit is contained in:
Attilio Rao 2012-12-26 15:20:32 +00:00
parent 70a0e3403a
commit c92c859b7b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=244706
1 changed files with 1 additions and 8 deletions
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9
sys/kern/vfs_subr.c
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@ -4724,12 +4724,6 @@ mnt_vnode_markerfree_active(struct vnode **mvp, struct mount *mp)
*mvp = NULL;
}
#ifdef SMP
#define ALWAYS_YIELD (mp_ncpus == 1)
#else
#define ALWAYS_YIELD 1
#endif
static struct vnode *
mnt_vnode_next_active(struct vnode **mvp, struct mount *mp)
{
@ -4746,7 +4740,7 @@ mnt_vnode_next_active(struct vnode **mvp, struct mount *mp)
continue;
}
if (!VI_TRYLOCK(vp)) {
if (ALWAYS_YIELD || should_yield()) {
if (mp_ncpus == 1 || should_yield()) {
TAILQ_INSERT_BEFORE(vp, *mvp, v_actfreelist);
mtx_unlock(&vnode_free_list_mtx);
kern_yield(PRI_USER);
@ -4777,7 +4771,6 @@ mnt_vnode_next_active(struct vnode **mvp, struct mount *mp)
KASSERT((vp->v_iflag & VI_ACTIVE) != 0, ("Non-active vp %p", vp));
return (vp);
}
#undef ALWAYS_YIELD
struct vnode *
__mnt_vnode_next_active(struct vnode **mvp, struct mount *mp)