From: nbd Date: Tue, 7 Apr 2009 02:51:10 +0000 (+0000) Subject: kernel: tweak the maximum allocation size to improve memory allocator performance X-Git-Url: https://git.rohieb.name/openwrt.git/commitdiff_plain/4cabc27bcab33bb77551af6760d90b4a2ccfef96?hp=252c6645de729b02dd844c81980e5db3a375306c kernel: tweak the maximum allocation size to improve memory allocator performance git-svn-id: svn://svn.openwrt.org/openwrt/trunk@15130 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- diff --git a/target/linux/generic-2.6/patches-2.6.28/203-slab_maxsize.patch b/target/linux/generic-2.6/patches-2.6.28/203-slab_maxsize.patch new file mode 100644 index 000000000..25567f848 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.28/203-slab_maxsize.patch @@ -0,0 +1,13 @@ +--- a/include/linux/slab.h ++++ b/include/linux/slab.h +@@ -115,8 +115,8 @@ int kmem_ptr_validate(struct kmem_cache + * to do various tricks to work around compiler limitations in order to + * ensure proper constant folding. + */ +-#define KMALLOC_SHIFT_HIGH ((MAX_ORDER + PAGE_SHIFT - 1) <= 25 ? \ +- (MAX_ORDER + PAGE_SHIFT - 1) : 25) ++#define KMALLOC_SHIFT_HIGH ((MAX_ORDER + PAGE_SHIFT - 1) <= 17 ? \ ++ (MAX_ORDER + PAGE_SHIFT - 1) : 17) + + #define KMALLOC_MAX_SIZE (1UL << KMALLOC_SHIFT_HIGH) + #define KMALLOC_MAX_ORDER (KMALLOC_SHIFT_HIGH - PAGE_SHIFT)