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sched: No need for bootmem special cases

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As of commit dcce284 ("mm: Extend gfp masking to the page
allocator") and commit 7e85ee0 ("slab,slub: don't enable
interrupts during early boot"), the slab allocator makes
sure we don't attempt to sleep during boot.

Therefore, remove bootmem special cases from the scheduler
and use plain GFP_KERNEL instead.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1279225102-2572-1-git-send-email-penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Pekka Enberg
2010-07-15 23:18:22 +03:00
committed by Ingo Molnar
parent bbc8cb5bae
commit 68c38fc3cb
3 changed files with 10 additions and 19 deletions
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19
kernel/sched.c
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@@ -6248,23 +6248,18 @@ static void rq_attach_root(struct rq *rq, struct root_domain *rd)
free_rootdomain(old_rd);
}
static int init_rootdomain(struct root_domain *rd, bool bootmem)
static int init_rootdomain(struct root_domain *rd)
{
gfp_t gfp = GFP_KERNEL;
memset(rd, 0, sizeof(*rd));
if (bootmem)
gfp = GFP_NOWAIT;
if (!alloc_cpumask_var(&rd->span, gfp))
if (!alloc_cpumask_var(&rd->span, GFP_KERNEL))
goto out;
if (!alloc_cpumask_var(&rd->online, gfp))
if (!alloc_cpumask_var(&rd->online, GFP_KERNEL))
goto free_span;
if (!alloc_cpumask_var(&rd->rto_mask, gfp))
if (!alloc_cpumask_var(&rd->rto_mask, GFP_KERNEL))
goto free_online;
if (cpupri_init(&rd->cpupri, bootmem) != 0)
if (cpupri_init(&rd->cpupri) != 0)
goto free_rto_mask;
return 0;
@@ -6280,7 +6275,7 @@ out:
static void init_defrootdomain(void)
{
init_rootdomain(&def_root_domain, true);
init_rootdomain(&def_root_domain);
atomic_set(&def_root_domain.refcount, 1);
}
@@ -6293,7 +6288,7 @@ static struct root_domain *alloc_rootdomain(void)
if (!rd)
return NULL;
if (init_rootdomain(rd, false) != 0) {
if (init_rootdomain(rd) != 0) {
kfree(rd);
return NULL;
}