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Diffstat (limited to '')
| -rw-r--r-- | debian/patches-rt/0082-slub-Enable-irqs-for-__GFP_WAIT.patch | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/debian/patches-rt/0082-slub-Enable-irqs-for-__GFP_WAIT.patch b/debian/patches-rt/0082-slub-Enable-irqs-for-__GFP_WAIT.patch new file mode 100644 index 000000000..05fa462e3 --- /dev/null +++ b/debian/patches-rt/0082-slub-Enable-irqs-for-__GFP_WAIT.patch @@ -0,0 +1,48 @@ +From e2e03d2e904d1df3d1e70dd70d5d939a6f5ccb26 Mon Sep 17 00:00:00 2001 +From: Thomas Gleixner <tglx@linutronix.de> +Date: Wed, 9 Jan 2013 12:08:15 +0100 +Subject: [PATCH 082/347] slub: Enable irqs for __GFP_WAIT +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz + +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> +--- + mm/slub.c | 9 ++++++++- + 1 file changed, 8 insertions(+), 1 deletion(-) + +diff --git a/mm/slub.c b/mm/slub.c +index 959ccf873292..3b1edb545215 100644 +--- a/mm/slub.c ++++ b/mm/slub.c +@@ -1597,10 +1597,17 @@ static struct page *allocate_slab(struct kmem_cache *s, gfp_t flags, int node) + void *start, *p; + int idx, order; + bool shuffle; ++ bool enableirqs = false; + + flags &= gfp_allowed_mask; + + if (gfpflags_allow_blocking(flags)) ++ enableirqs = true; ++#ifdef CONFIG_PREEMPT_RT_FULL ++ if (system_state > SYSTEM_BOOTING) ++ enableirqs = true; ++#endif ++ if (enableirqs) + local_irq_enable(); + + flags |= s->allocflags; +@@ -1659,7 +1666,7 @@ 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; +-- +2.36.1 + |