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Message-Id: <1437113574-2047-1-git-send-email-sergey.senozhatsky@gmail.com> Date: Fri, 17 Jul 2015 15:12:54 +0900 From: Sergey Senozhatsky <sergey.senozhatsky.work@...il.com> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Mel Gorman <mgorman@...e.de>, linux-mm@...ck.org, linux-kernel@...r.kernel.org, Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>, Sergey Senozhatsky <sergey.senozhatsky@...il.com> Subject: [PATCH] mm/rmap: disable preemption for trace_tlb_flush() tlb_flush contains TP_CONDITION(cpu_online(smp_processor_id())) which is better be executed with preemption disabled. Move trace_tlb_flush(TLB_REMOTE_SHOOTDOWN) in try_to_unmap_flush() under get_cpu(). Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@...il.com> --- mm/rmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/rmap.c b/mm/rmap.c index 30812e9..74086cc 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -613,9 +613,9 @@ void try_to_unmap_flush(void) if (!tlb_ubc->flush_required) return; + cpu = get_cpu(); trace_tlb_flush(TLB_REMOTE_SHOOTDOWN, -1UL); - cpu = get_cpu(); if (cpumask_test_cpu(cpu, &tlb_ubc->cpumask)) percpu_flush_tlb_batch_pages(&tlb_ubc->cpumask); -- 2.4.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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