From 9fa8380c9ea965fcb08ade60ff55cbafd97a48d3 Mon Sep 17 00:00:00 2001 From: Felix Fietkau <nbd@openwrt.org> Date: Tue, 7 Apr 2009 02:51:10 +0000 Subject: kernel: tweak the maximum allocation size to improve memory allocator performance SVN-Revision: 15130 --- .../linux/generic-2.6/patches-2.6.28/203-slab_maxsize.patch | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100644 target/linux/generic-2.6/patches-2.6.28/203-slab_maxsize.patch (limited to 'target') 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 0000000000..25567f8488 --- /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) -- cgit v1.2.3