Commit-ID: 3f79e4c7c9c2f5c30751ea5c8dd9fd1d56b81947
Gitweb: http://git.kernel.org/tip/3f79e4c7c9c2f5c30751ea5c8dd9fd1d56b81947
Author: Andy Lutomirski <luto@xxxxxxxxxx>
AuthorDate: Sun, 28 May 2017 10:00:13 -0700
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Mon, 5 Jun 2017 09:59:43 +0200
x86/mm: Use new merged flush logic in arch_tlbbatch_flush()
Now there's only one copy of the local tlb flush logic for
non-kernel pages on SMP kernels.
The only functional change is that arch_tlbbatch_flush() will now
leave_mm() on the local CPU if that CPU is in the batch and is in
TLBSTATE_LAZY mode.
Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx>
Cc: Borislav Petkov <bpetkov@xxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Nadav Amit <nadav.amit@xxxxxxxxx>
Cc: Nadav Amit <namit@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: linux-mm@xxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
arch/x86/mm/tlb.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index 12b8812..c03b4a0 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -382,12 +382,8 @@ void arch_tlbbatch_flush(struct arch_tlbflush_unmap_batch *batch)
int cpu = get_cpu();
- if (cpumask_test_cpu(cpu, &batch->cpumask)) {
- count_vm_tlb_event(NR_TLB_LOCAL_FLUSH_ALL);
- local_flush_tlb();
- trace_tlb_flush(TLB_LOCAL_SHOOTDOWN, TLB_FLUSH_ALL);
- }
-
+ if (cpumask_test_cpu(cpu, &batch->cpumask))
+ flush_tlb_func_local(&info, TLB_LOCAL_SHOOTDOWN);
if (cpumask_any_but(&batch->cpumask, cpu) < nr_cpu_ids)
flush_tlb_others(&batch->cpumask, &info);
cpumask_clear(&batch->cpumask);
--
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