Tejun Heo 19df0c2fef percpu: align percpu readmostly subsection to cacheline ...

Currently percpu readmostly subsection may share cachelines with other
percpu subsections which may result in unnecessary cacheline bounce
and performance degradation.

This patch adds @cacheline parameter to PERCPU() and PERCPU_VADDR()
linker macros, makes each arch linker scripts specify its cacheline
size and use it to align percpu subsections.

This is based on Shaohua's x86 only patch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Shaohua Li <shaohua.li@intel.com>

2011-01-25 14:26:50 +01:00

..

asm

percpu: align percpu readmostly subsection to cacheline

2011-01-25 14:26:50 +01:00

shared

Deal with missing exports for hostfs

2010-08-09 16:47:25 -04:00