Commit-ID: a23421f111bb256cdbf23dcfe15f35567ab88e98
Gitweb: http://git.kernel.org/tip/a23421f111bb256cdbf23dcfe15f35567ab88e98
Author: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
AuthorDate: Thu, 31 Jul 2014 08:40:58 -0700
Committer: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
CommitDate: Thu, 31 Jul 2014 08:48:51 -0700
x86/mm: Unify remote INVLPG code
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 <dave.hansen@xxxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/20140731154058.E0F90408@xxxxxxxxxxxxxxxxxx
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
---
arch/x86/mm/tlb.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index ae584d0..add5a0f 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -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;
--
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