43 lines
1.2 KiB
Diff
43 lines
1.2 KiB
Diff
From 82e554da6555d60e1a8e5c390a27a12d338f1b53 Mon Sep 17 00:00:00 2001
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From: Thomas Gleixner <tglx@linutronix.de>
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Date: Thu, 25 Oct 2012 10:32:35 +0100
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Subject: [PATCH 081/325] mm: Enable SLUB for RT
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.115-rt48.tar.xz
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Avoid the memory allocation in IRQ section
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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[bigeasy: factor out everything except the kcalloc() workaorund ]
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Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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---
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mm/slub.c | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/mm/slub.c b/mm/slub.c
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index 19bc021a2726..181b2cb6ffbb 100644
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--- a/mm/slub.c
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+++ b/mm/slub.c
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@@ -3699,6 +3699,11 @@ static void list_slab_objects(struct kmem_cache *s, struct page *page,
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const char *text)
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{
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#ifdef CONFIG_SLUB_DEBUG
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+#ifdef CONFIG_PREEMPT_RT_BASE
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+ /* XXX move out of irq-off section */
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+ slab_err(s, page, text, s->name);
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+#else
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+
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void *addr = page_address(page);
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void *p;
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unsigned long *map = kcalloc(BITS_TO_LONGS(page->objects),
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@@ -3720,6 +3725,7 @@ static void list_slab_objects(struct kmem_cache *s, struct page *page,
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slab_unlock(page);
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kfree(map);
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#endif
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+#endif
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}
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/*
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--
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2.25.1
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