linux/include/asm-x86_64/cache.h

/*
 * include/asm-x8664/cache.h
 */
#ifndef __ARCH_X8664_CACHE_H
#define __ARCH_X8664_CACHE_H

#include <linux/config.h>

/* L1 cache line size */
#define L1_CACHE_SHIFT	(CONFIG_X86_L1_CACHE_SHIFT)
#define L1_CACHE_BYTES	(1 << L1_CACHE_SHIFT)
#define L1_CACHE_SHIFT_MAX 7	/* largest L1 which this arch supports */

#endif
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-16 22:20:36 +00:00			`/*`
			`* include/asm-x8664/cache.h`
			`*/`
			`#ifndef __ARCH_X8664_CACHE_H`
			`#define __ARCH_X8664_CACHE_H`

			`#include <linux/config.h>`

			`/* L1 cache line size */`
			`#define L1_CACHE_SHIFT (CONFIG_X86_L1_CACHE_SHIFT)`
			`#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)`
[PATCH] x86_64: Set ____cacheline_maxaligned_in_smp alignment to 128 bytes The current value was correct before the introduction of Intel EM64T support - but now L1_CACHE_SHIFT_MAX can be less than L1_CACHE_SHIFT, which _is_ funny! Between the few users of ____cacheline_maxaligned_in_smp, we also have (for example) rcu_ctrlblk, and struct zone, with zone->{lru_,}lock. I.e. we have a lot of excess cacheline bouncing on them. No correctness issues, obviously. So this could even be merged for 2.6.14 (I'm not a fan of this idea, though). CC: Andi Kleen <ak@suse.de> Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 2005-11-05 16:25:54 +00:00			`#define L1_CACHE_SHIFT_MAX 7 /* largest L1 which this arch supports */`
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-16 22:20:36 +00:00
			`#endif`