From 5bc9982e129b20ecb8f6c32d3d342af5087ffdae Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 25 Oct 2012 10:32:35 +0100 Subject: [PATCH 081/328] mm: Enable SLUB for RT Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.106-rt46.tar.xz Avoid the memory allocation in IRQ section Signed-off-by: Thomas Gleixner [bigeasy: factor out everything except the kcalloc() workaorund ] Signed-off-by: Sebastian Andrzej Siewior --- mm/slub.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/mm/slub.c b/mm/slub.c index 224663e20772..cbe47408c6eb 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -3680,6 +3680,11 @@ static void list_slab_objects(struct kmem_cache *s, struct page *page, const char *text) { #ifdef CONFIG_SLUB_DEBUG +#ifdef CONFIG_PREEMPT_RT_BASE + /* XXX move out of irq-off section */ + slab_err(s, page, text, s->name); +#else + void *addr = page_address(page); void *p; unsigned long *map = kcalloc(BITS_TO_LONGS(page->objects), @@ -3701,6 +3706,7 @@ static void list_slab_objects(struct kmem_cache *s, struct page *page, slab_unlock(page); kfree(map); #endif +#endif } /* -- 2.25.1