From: Pekka Enberg <penberg@kernel.org>
Date: Sat, 18 Sep 2010 17:45:06 +0000 (+0300)
Subject: Revert "Slub: UP bandaid"
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ed59ecbf8904a40cf0a1ee5d6f100d76d2f44e5f;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

Revert "Slub: UP bandaid"

This reverts commit 5249d039500f05a5ab379286b1d23ab9b04d3f2c. It's not needed
after commit bbddff0545878a8649c091a9dd7c43ce91516734 ("percpu: use percpu
allocator on UP too").
---

diff --git a/mm/slub.c b/mm/slub.c
index 42ce17304275..7e1fe663795a 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2104,24 +2104,8 @@ init_kmem_cache_node(struct kmem_cache_node *n, struct kmem_cache *s)
 
 static inline int alloc_kmem_cache_cpus(struct kmem_cache *s)
 {
-#ifdef CONFIG_SMP
-	/*
-	 * Will use reserve that does not require slab operation during
-	 * early boot.
-	 */
 	BUILD_BUG_ON(PERCPU_DYNAMIC_EARLY_SIZE <
 			SLUB_PAGE_SHIFT * sizeof(struct kmem_cache_cpu));
-#else
-	/*
-	 * Special hack for UP mode. allocpercpu() falls back to kmalloc
-	 * operations. So we cannot use that before the slab allocator is up
-	 * Simply get the smallest possible compound page. The page will be
-	 * released via kfree() when the cpu caches are resized later.
-	 */
-	if (slab_state < UP)
-		s->cpu_slab = (__percpu void *)kmalloc_large(PAGE_SIZE << 1, GFP_NOWAIT);
-	else
-#endif
 
 	s->cpu_slab = alloc_percpu(struct kmem_cache_cpu);