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| author | Jan Beulich <JBeulich@novell.com> | 2009-11-13 11:54:40 +0000 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-11-19 04:58:34 +0100 |
| commit | 350f8f5631922c7848ec4b530c111cb8c2ff7caa (patch) | |
| tree | d81bd9432ac1f130779fa7272322681169184867 /arch/x86/include/asm/cache.h | |
| parent | 508d85c2c6bc8cba53d2a54d9a306ad64a0a80bf (diff) | |
| download | op-kernel-dev-350f8f5631922c7848ec4b530c111cb8c2ff7caa.zip op-kernel-dev-350f8f5631922c7848ec4b530c111cb8c2ff7caa.tar.gz | |
x86: Eliminate redundant/contradicting cache line size config options
Rather than having X86_L1_CACHE_BYTES and X86_L1_CACHE_SHIFT
(with inconsistent defaults), just having the latter suffices as
the former can be easily calculated from it.
To be consistent, also change X86_INTERNODE_CACHE_BYTES to
X86_INTERNODE_CACHE_SHIFT, and set it to 7 (128 bytes) for NUMA
to account for last level cache line size (which here matters
more than L1 cache line size).
Finally, make sure the default value for X86_L1_CACHE_SHIFT,
when X86_GENERIC is selected, is being seen before that for the
individual CPU model options (other than on x86-64, where
GENERIC_CPU is part of the choice construct, X86_GENERIC is a
separate option on ix86).
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Acked-by: Ravikiran Thirumalai <kiran@scalex86.org>
Acked-by: Nick Piggin <npiggin@suse.de>
LKML-Reference: <4AFD5710020000780001F8F0@vpn.id2.novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/include/asm/cache.h')
| -rw-r--r-- | arch/x86/include/asm/cache.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/x86/include/asm/cache.h b/arch/x86/include/asm/cache.h index 549860d..2f9047c 100644 --- a/arch/x86/include/asm/cache.h +++ b/arch/x86/include/asm/cache.h @@ -9,12 +9,13 @@ #define __read_mostly __attribute__((__section__(".data.read_mostly"))) +#define INTERNODE_CACHE_SHIFT CONFIG_X86_INTERNODE_CACHE_SHIFT +#define INTERNODE_CACHE_BYTES (1 << INTERNODE_CACHE_SHIFT) + #ifdef CONFIG_X86_VSMP -/* vSMP Internode cacheline shift */ -#define INTERNODE_CACHE_SHIFT (12) #ifdef CONFIG_SMP #define __cacheline_aligned_in_smp \ - __attribute__((__aligned__(1 << (INTERNODE_CACHE_SHIFT)))) \ + __attribute__((__aligned__(INTERNODE_CACHE_BYTES))) \ __page_aligned_data #endif #endif |
