Messages in this thread Patch in this message | | | From | Andy Lutomirski <> | Subject | [PATCH v3 4/8] x86/mm: Use new merged flush logic in arch_tlbbatch_flush() | Date | Thu, 25 May 2017 17:47:48 -0700 |
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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.
Cc: Rik van Riel <riel@redhat.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Nadav Amit <namit@vmware.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andy Lutomirski <luto@kernel.org> --- 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 12b8812e8926..c03b4a0ce58c 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); -- 2.9.4
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