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yaml
---
r: 208545
b: refs/heads/master
c: a6eb9fe
h: refs/heads/master
i:
  208543: 7e0da1c
v: v3
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FUJITA Tomonori authored and Linus Torvalds committed Aug 11, 2010
1 parent cc17883 commit e70524f
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Showing 17 changed files with 26 additions and 20 deletions.
2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: cd1542c8197fc3c2eb3a8301505d5d9738fab1e4
refs/heads/master: a6eb9fe105d5de0053b261148cee56c94b4720ca
2 changes: 1 addition & 1 deletion trunk/arch/arm/include/asm/cache.h
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Expand Up @@ -14,7 +14,7 @@
* cache before the transfer is done, causing old data to be seen by
* the CPU.
*/
#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES
#define ARCH_DMA_MINALIGN L1_CACHE_BYTES

/*
* With EABI on ARMv5 and above we must have 64-bit aligned slab pointers.
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2 changes: 1 addition & 1 deletion trunk/arch/avr32/include/asm/cache.h
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Expand Up @@ -11,7 +11,7 @@
* cache before the transfer is done, causing old data to be seen by
* the CPU.
*/
#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES
#define ARCH_DMA_MINALIGN L1_CACHE_BYTES

#ifndef __ASSEMBLER__
struct cache_info {
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2 changes: 1 addition & 1 deletion trunk/arch/blackfin/include/asm/cache.h
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Expand Up @@ -15,7 +15,7 @@
#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
#define SMP_CACHE_BYTES L1_CACHE_BYTES

#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES
#define ARCH_DMA_MINALIGN L1_CACHE_BYTES

#ifdef CONFIG_SMP
#define __cacheline_aligned
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2 changes: 1 addition & 1 deletion trunk/arch/frv/include/asm/mem-layout.h
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Expand Up @@ -35,7 +35,7 @@
* the slab must be aligned such that load- and store-double instructions don't
* fault if used
*/
#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES
#define ARCH_DMA_MINALIGN L1_CACHE_BYTES
#define ARCH_SLAB_MINALIGN L1_CACHE_BYTES

/*****************************************************************************/
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2 changes: 1 addition & 1 deletion trunk/arch/m68k/include/asm/cache.h
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Expand Up @@ -8,6 +8,6 @@
#define L1_CACHE_SHIFT 4
#define L1_CACHE_BYTES (1<< L1_CACHE_SHIFT)

#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES
#define ARCH_DMA_MINALIGN L1_CACHE_BYTES

#endif
2 changes: 1 addition & 1 deletion trunk/arch/microblaze/include/asm/page.h
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Expand Up @@ -40,7 +40,7 @@
#ifndef __ASSEMBLY__

/* MS be sure that SLAB allocates aligned objects */
#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES
#define ARCH_DMA_MINALIGN L1_CACHE_BYTES

#define ARCH_SLAB_MINALIGN L1_CACHE_BYTES

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2 changes: 1 addition & 1 deletion trunk/arch/mips/include/asm/mach-generic/kmalloc.h
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Expand Up @@ -7,7 +7,7 @@
* Total overkill for most systems but need as a safe default.
* Set this one if any device in the system might do non-coherent DMA.
*/
#define ARCH_KMALLOC_MINALIGN 128
#define ARCH_DMA_MINALIGN 128
#endif

#endif /* __ASM_MACH_GENERIC_KMALLOC_H */
2 changes: 1 addition & 1 deletion trunk/arch/mips/include/asm/mach-ip27/kmalloc.h
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Expand Up @@ -2,7 +2,7 @@
#define __ASM_MACH_IP27_KMALLOC_H

/*
* All happy, no need to define ARCH_KMALLOC_MINALIGN
* All happy, no need to define ARCH_DMA_MINALIGN
*/

#endif /* __ASM_MACH_IP27_KMALLOC_H */
4 changes: 2 additions & 2 deletions trunk/arch/mips/include/asm/mach-ip32/kmalloc.h
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Expand Up @@ -3,9 +3,9 @@


#if defined(CONFIG_CPU_R5000) || defined(CONFIG_CPU_RM7000)
#define ARCH_KMALLOC_MINALIGN 32
#define ARCH_DMA_MINALIGN 32
#else
#define ARCH_KMALLOC_MINALIGN 128
#define ARCH_DMA_MINALIGN 128
#endif

#endif /* __ASM_MACH_IP32_KMALLOC_H */
2 changes: 1 addition & 1 deletion trunk/arch/mn10300/include/asm/cache.h
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Expand Up @@ -21,7 +21,7 @@
#define L1_CACHE_DISPARITY L1_CACHE_NENTRIES * L1_CACHE_BYTES
#endif

#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES
#define ARCH_DMA_MINALIGN L1_CACHE_BYTES

/* data cache purge registers
* - read from the register to unconditionally purge that cache line
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2 changes: 1 addition & 1 deletion trunk/arch/powerpc/include/asm/page_32.h
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Expand Up @@ -10,7 +10,7 @@
#define VM_DATA_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS32

#ifdef CONFIG_NOT_COHERENT_CACHE
#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES
#define ARCH_DMA_MINALIGN L1_CACHE_BYTES
#endif

#ifdef CONFIG_PTE_64BIT
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2 changes: 1 addition & 1 deletion trunk/arch/sh/include/asm/page.h
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Expand Up @@ -180,7 +180,7 @@ typedef struct page *pgtable_t;
* Some drivers need to perform DMA into kmalloc'ed buffers
* and so we have to increase the kmalloc minalign for this.
*/
#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES
#define ARCH_DMA_MINALIGN L1_CACHE_BYTES

#ifdef CONFIG_SUPERH64
/*
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2 changes: 1 addition & 1 deletion trunk/arch/xtensa/include/asm/cache.h
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Expand Up @@ -29,6 +29,6 @@
# define CACHE_WAY_SIZE ICACHE_WAY_SIZE
#endif

#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES
#define ARCH_DMA_MINALIGN L1_CACHE_BYTES

#endif /* _XTENSA_CACHE_H */
4 changes: 3 additions & 1 deletion trunk/include/linux/slab_def.h
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Expand Up @@ -17,7 +17,6 @@

#include <trace/events/kmem.h>

#ifndef ARCH_KMALLOC_MINALIGN
/*
* Enforce a minimum alignment for the kmalloc caches.
* Usually, the kmalloc caches are cache_line_size() aligned, except when
Expand All @@ -27,6 +26,9 @@
* ARCH_KMALLOC_MINALIGN allows that.
* Note that increasing this value may disable some debug features.
*/
#ifdef ARCH_DMA_MINALIGN
#define ARCH_KMALLOC_MINALIGN ARCH_DMA_MINALIGN
#else
#define ARCH_KMALLOC_MINALIGN __alignof__(unsigned long long)
#endif

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4 changes: 3 additions & 1 deletion trunk/include/linux/slob_def.h
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@@ -1,7 +1,9 @@
#ifndef __LINUX_SLOB_DEF_H
#define __LINUX_SLOB_DEF_H

#ifndef ARCH_KMALLOC_MINALIGN
#ifdef ARCH_DMA_MINALIGN
#define ARCH_KMALLOC_MINALIGN ARCH_DMA_MINALIGN
#else
#define ARCH_KMALLOC_MINALIGN __alignof__(unsigned long)
#endif

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8 changes: 5 additions & 3 deletions trunk/include/linux/slub_def.h
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Expand Up @@ -106,15 +106,17 @@ struct kmem_cache {
/*
* Kmalloc subsystem.
*/
#if defined(ARCH_KMALLOC_MINALIGN) && ARCH_KMALLOC_MINALIGN > 8
#define KMALLOC_MIN_SIZE ARCH_KMALLOC_MINALIGN
#if defined(ARCH_DMA_MINALIGN) && ARCH_DMA_MINALIGN > 8
#define KMALLOC_MIN_SIZE ARCH_DMA_MINALIGN
#else
#define KMALLOC_MIN_SIZE 8
#endif

#define KMALLOC_SHIFT_LOW ilog2(KMALLOC_MIN_SIZE)

#ifndef ARCH_KMALLOC_MINALIGN
#ifdef ARCH_DMA_MINALIGN
#define ARCH_KMALLOC_MINALIGN ARCH_DMA_MINALIGN
#else
#define ARCH_KMALLOC_MINALIGN __alignof__(unsigned long long)
#endif

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