From: Dave Hansen <[email protected]> There are currently three paths through the remote flush code:
1. full invalidation 2. single page invalidation using invlpg 3. ranged invalidation using invlpg This takes 2 and 3 and combines them in to a single path by making the single-page one just be the start and end be start plus a single page. This makes placement of our tracepoint easier. Signed-off-by: Dave Hansen <[email protected]> Cc: Rik van Riel <[email protected]> Cc: Mel Gorman <[email protected]> --- b/arch/x86/mm/tlb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff -puN arch/x86/mm/tlb.c~x86-tlb-simplify-remote-flush-code arch/x86/mm/tlb.c --- a/arch/x86/mm/tlb.c~x86-tlb-simplify-remote-flush-code 2014-04-25 15:33:13.091058396 -0700 +++ b/arch/x86/mm/tlb.c 2014-04-25 15:33:13.094058531 -0700 @@ -102,13 +102,13 @@ static void flush_tlb_func(void *info) if (f->flush_mm != this_cpu_read(cpu_tlbstate.active_mm)) return; + if (!f->flush_end) + f->flush_end = f->flush_start + PAGE_SIZE; count_vm_tlb_event(NR_TLB_REMOTE_FLUSH_RECEIVED); if (this_cpu_read(cpu_tlbstate.state) == TLBSTATE_OK) { if (f->flush_end == TLB_FLUSH_ALL) local_flush_tlb(); - else if (!f->flush_end) - __flush_tlb_single(f->flush_start); else { unsigned long addr; addr = f->flush_start; _ -- 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/
