On 05/15/2012 09:05 PM, Minchan Kim wrote: > zsmalloc uses set_pte and __flush_tlb_one for performance but > many architecture don't support it. so this patch removes > set_pte and __flush_tlb_one which are x86 dependency. > Instead of it, use local_flush_tlb_kernel_range which are available > by more architectures. It would be better than supporting only x86 > and last patch in series will enable again with supporting > local_flush_tlb_kernel_range in x86. > > About local_flush_tlb_kernel_range, > If architecture is very smart, it could flush only tlb entries related to vaddr. > If architecture is smart, it could flush only tlb entries related to a CPU. > If architecture is _NOT_ smart, it could flush all entries of all CPUs. > So, it would be best to support both portability and performance. > > Cc: Russell King <linux@xxxxxxxxxxxxxxxx> > Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx> > Cc: Paul Mundt <lethal@xxxxxxxxxxxx> > Cc: Guan Xuetao <gxt@xxxxxxxxxxxxxxx> > Cc: Chen Liqin <liqin.chen@xxxxxxxxxxxxx> > Signed-off-by: Minchan Kim <minchan@xxxxxxxxxx> For the zsmalloc changes: Acked-by: Seth Jennings <sjenning@xxxxxxxxxxxxxxxxxx> Thanks, Seth -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>