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authorIngo Molnar <mingo@elte.hu>2006-12-13 00:34:43 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-13 09:05:50 -0800
commit3117df0453828bd045c16244e6f50e5714667a8a (patch)
tree4f24e5b4024359dd42c91b84cbc25280f21b7314 /include
parent[PATCH] lockdep: use chain hash on CONFIG_DEBUG_LOCKDEP too (diff)
downloadlinux-dev-3117df0453828bd045c16244e6f50e5714667a8a.tar.xz
linux-dev-3117df0453828bd045c16244e6f50e5714667a8a.zip
[PATCH] lockdep: print irq-trace info on asserts
When we print an assert due to scheduling-in-atomic bugs, and if lockdep is enabled, then the IRQ tracing information of lockdep can be printed to pinpoint the code location that disabled interrupts. This saved me quite a bit of debugging time in cases where the backtrace did not identify the irq-disabling site well enough. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/lockdep.h16
1 files changed, 13 insertions, 3 deletions
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index 498bfbd3b4e1..ea097dddc44f 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -281,15 +281,25 @@ struct lock_class_key { };
#if defined(CONFIG_TRACE_IRQFLAGS) && defined(CONFIG_GENERIC_HARDIRQS)
extern void early_init_irq_lock_class(void);
#else
-# define early_init_irq_lock_class() do { } while (0)
+static inline void early_init_irq_lock_class(void)
+{
+}
#endif
#ifdef CONFIG_TRACE_IRQFLAGS
extern void early_boot_irqs_off(void);
extern void early_boot_irqs_on(void);
+extern void print_irqtrace_events(struct task_struct *curr);
#else
-# define early_boot_irqs_off() do { } while (0)
-# define early_boot_irqs_on() do { } while (0)
+static inline void early_boot_irqs_off(void)
+{
+}
+static inline void early_boot_irqs_on(void)
+{
+}
+static inline void print_irqtrace_events(struct task_struct *curr)
+{
+}
#endif
/*