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| author | Thomas Gleixner <tglx@linutronix.de> | 2013-01-09 12:08:15 +0100 |
|---|---|---|
| committer | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2020-04-03 18:49:47 +0200 |
| commit | c01e10fe606d1bb949382650db71e6d711b1bb02 (patch) | |
| tree | 9068508a2eaa33beb83d9eff56c8f19e2bb0eee1 /mm | |
| parent | d18a0a185407898fcf2931257f585083fa2e1e2a (diff) | |
| download | linux-rt-c01e10fe606d1bb949382650db71e6d711b1bb02.tar.gz | |
slub: Enable irqs for __GFP_WAIT
SYSTEM_RUNNING might be too late for enabling interrupts. Allocations
with GFP_WAIT can happen before that. So use this as an indicator.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/slub.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/mm/slub.c b/mm/slub.c index 7dc6ef98cd7c..1929645daa53 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1647,10 +1647,18 @@ static struct page *allocate_slab(struct kmem_cache *s, gfp_t flags, int node) void *start, *p, *next; int idx; bool shuffle; + bool enableirqs = false; flags &= gfp_allowed_mask; if (gfpflags_allow_blocking(flags)) + enableirqs = true; + +#ifdef CONFIG_PREEMPT_RT + if (system_state > SYSTEM_BOOTING) + enableirqs = true; +#endif + if (enableirqs) local_irq_enable(); flags |= s->allocflags; @@ -1709,7 +1717,7 @@ static struct page *allocate_slab(struct kmem_cache *s, gfp_t flags, int node) page->frozen = 1; out: - if (gfpflags_allow_blocking(flags)) + if (enableirqs) local_irq_disable(); if (!page) return NULL; |