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@xxxxxxxxx> --- 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, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>