In rcu_rrupt_from_idle, we want to check if it is called from within an interrupt, but want to do such checking only for debug builds. lockdep already tracks when we enter an interrupt. Let us expose it as an assertion macro so it can be used to assert this.
Unified · Split
| @@ -632,11 +632,18 @@ do { \ · 631 unmodified lines | |||
| 632 | "IRQs not disabled as expected\n"); \ | 632 | "IRQs not disabled as expected\n"); \ |
| 633 | } while (0) | 633 | } while (0) |
| 634 | 634 | ||
| 635 | #define lockdep_assert_in_irq() do { \ | ||
| 636 | WARN_ONCE(debug_locks && !current->lockdep_recursion && \ | ||
| 637 | !current->hardirq_context, \ | ||
| 638 | "Not in hardirq as expected\n"); \ | ||
| 639 | } while (0) | ||
| 640 | |||
| 635 | #else | 641 | #else |
| 636 | # define might_lock(lock) do { } while (0) | 642 | # define might_lock(lock) do { } while (0) |
| 637 | # define might_lock_read(lock) do { } while (0) | 643 | # define might_lock_read(lock) do { } while (0) |
| 638 | # define lockdep_assert_irqs_enabled() do { } while (0) | 644 | # define lockdep_assert_irqs_enabled() do { } while (0) |
| 639 | # define lockdep_assert_irqs_disabled() do { } while (0) | 645 | # define lockdep_assert_irqs_disabled() do { } while (0) |
| 646 | # define lockdep_assert_in_irq() do { } while (0) | ||
| 640 | #endif | 647 | #endif |
| 641 | 648 | ||
| 642 | #ifdef CONFIG_LOCKDEP | 649 | #ifdef CONFIG_LOCKDEP |