On Fri, 4 May 2007, Fenghua Yu wrote: > This is follow-up for Suresh's runqueue align in smp patch at: > http://www.uwsg.iu.edu/hypermail/linux/kernel/0704.1/0340.html > > The patches place all of smp cacheline aligned percpu data into > .data.percpu.cacheline_aligned_in_smp. Other percpu data is still in > data.percpu section. The patches can reduce cache line access in SMP and > reduce alignment gap waste. The patches also define PERCPU macro for > vmlinux.lds.S for code clean up.
Ummm... The per cpu area is for exclusive use of a particular processor. If there is contention in the per cpu area then a data object needs to be removed from the per cpu area because the object is *not* accessed only from a certain cpu. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
