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-rw-r--r--kernel/lockdep.c30
1 files changed, 16 insertions, 14 deletions
diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 3956f5149e25..74ca247a4d4f 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -2485,23 +2485,9 @@ static void __trace_hardirqs_on_caller(unsigned long ip)
2485{ 2485{
2486 struct task_struct *curr = current; 2486 struct task_struct *curr = current;
2487 2487
2488 if (DEBUG_LOCKS_WARN_ON(unlikely(early_boot_irqs_disabled)))
2489 return;
2490
2491 if (unlikely(curr->hardirqs_enabled)) {
2492 /*
2493 * Neither irq nor preemption are disabled here
2494 * so this is racy by nature but losing one hit
2495 * in a stat is not a big deal.
2496 */
2497 __debug_atomic_inc(redundant_hardirqs_on);
2498 return;
2499 }
2500 /* we'll do an OFF -> ON transition: */ 2488 /* we'll do an OFF -> ON transition: */
2501 curr->hardirqs_enabled = 1; 2489 curr->hardirqs_enabled = 1;
2502 2490
2503 if (DEBUG_LOCKS_WARN_ON(current->hardirq_context))
2504 return;
2505 /* 2491 /*
2506 * We are going to turn hardirqs on, so set the 2492 * We are going to turn hardirqs on, so set the
2507 * usage bit for all held locks: 2493 * usage bit for all held locks:
@@ -2529,9 +2515,25 @@ void trace_hardirqs_on_caller(unsigned long ip)
2529 if (unlikely(!debug_locks || current->lockdep_recursion)) 2515 if (unlikely(!debug_locks || current->lockdep_recursion))
2530 return; 2516 return;
2531 2517
2518 if (unlikely(current->hardirqs_enabled)) {
2519 /*
2520 * Neither irq nor preemption are disabled here
2521 * so this is racy by nature but losing one hit
2522 * in a stat is not a big deal.
2523 */
2524 __debug_atomic_inc(redundant_hardirqs_on);
2525 return;
2526 }
2527
2532 if (DEBUG_LOCKS_WARN_ON(!irqs_disabled())) 2528 if (DEBUG_LOCKS_WARN_ON(!irqs_disabled()))
2533 return; 2529 return;
2534 2530
2531 if (DEBUG_LOCKS_WARN_ON(unlikely(early_boot_irqs_disabled)))
2532 return;
2533
2534 if (DEBUG_LOCKS_WARN_ON(current->hardirq_context))
2535 return;
2536
2535 current->lockdep_recursion = 1; 2537 current->lockdep_recursion = 1;
2536 __trace_hardirqs_on_caller(ip); 2538 __trace_hardirqs_on_caller(ip);
2537 current->lockdep_recursion = 0; 2539 current->lockdep_recursion = 0;