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| author | Ben Dooks <ben-linux@fluff.org> | 2008-08-08 21:10:12 +0100 |
|---|---|---|
| committer | Ben Dooks <ben-linux@fluff.org> | 2008-08-08 21:10:12 +0100 |
| commit | af7a535688a758d15f06a98833e6a143b29af9de (patch) | |
| tree | bac5ab210bbbbe276f0e44ed84194d7c8bb16aae /arch/ia64/include/asm/shmparam.h | |
| parent | 0c17e4ceedd35c78b1c7413dbd16279a350be6bc (diff) | |
| parent | c41107c2d4fd31924533f4dbc4c3428acc2b5894 (diff) | |
Merge http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm into for-rmk
Diffstat (limited to 'arch/ia64/include/asm/shmparam.h')
| -rw-r--r-- | arch/ia64/include/asm/shmparam.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/shmparam.h b/arch/ia64/include/asm/shmparam.h new file mode 100644 index 00000000000..d07508dc54a --- /dev/null +++ b/arch/ia64/include/asm/shmparam.h @@ -0,0 +1,12 @@ +#ifndef _ASM_IA64_SHMPARAM_H +#define _ASM_IA64_SHMPARAM_H + +/* + * SHMLBA controls minimum alignment at which shared memory segments + * get attached. The IA-64 architecture says that there may be a + * performance degradation when there are virtual aliases within 1MB. + * To reduce the chance of this, we set SHMLBA to 1MB. --davidm 00/12/20 + */ +#define SHMLBA (1024*1024) + +#endif /* _ASM_IA64_SHMPARAM_H */ |