On Mon, Dec 27, 2010 at 02:37:19PM +0100, Tejun Heo wrote: > 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@xxxxxxxxxx> > Cc: Shaohua Li <shaohua.li@xxxxxxxxx> > --- > Shaohua, can you please verify this achieves the same result? If no > one objects, I'll route it through the percpu tree. Applied to percpu#for-2.6.39. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
