On 06/27/2012 01:53 PM, Minchan Kim wrote: > On 06/26/2012 01:14 AM, Seth Jennings wrote: > >> This patch adds support for a local_tlb_flush_kernel_range() >> function for the x86 arch. This function allows for CPU-local >> TLB flushing, potentially using invlpg for single entry flushing, >> using an arch independent function name. >> >> Signed-off-by: Seth Jennings <sjenning@xxxxxxxxxxxxxxxxxx> > > > Anyway, we don't matter INVLPG_BREAK_EVEN_PAGES's optimization point is 8 or something. Different CPU type has different balance point on the invlpg replacing flush all. and some CPU never get benefit from invlpg, So, it's better to use different value for different CPU, not a fixed INVLPG_BREAK_EVEN_PAGES. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>