[PATCH] lockdep, UML: fix compilation when CONFIG_TRACE_IRQFLAGS_SUPPORT is not set

From: Rui Sousa
Date: Thu Sep 04 2008 - 13:47:53 EST


Hiroshi Shimamoto reported:

> > !TRACE_IRQFLAGS_SUPPORT mode of build for future work, it can be
> > restored via a simple revert.
>
> Hi, it seems that this patch breaks uml build.
>
> kernel/printk.c: In function 'vprintk':
> kernel/printk.c:674: error: implicit declaration of function
> 'raw_local_irq_save' kernel/printk.c:772: error: implicit declaration of
> function 'raw_local_irq_restore'

With the patch bellow it compiles (make ARCH=um with a x86 host), but I'm
really out of my league on this one...

Reported-by: Hiroshi Shimamoto <h-shimamoto@xxxxxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
include/asm-um/system-generic.h | 32 ++++++++++++++++----------------
1 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/include/asm-um/system-generic.h b/include/asm-um/system-generic.h
index 5bcfa35..f1ea4da 100644
--- a/include/asm-um/system-generic.h
+++ b/include/asm-um/system-generic.h
@@ -4,15 +4,15 @@
#include "asm/arch/system.h"

#undef switch_to
-#undef local_irq_save
-#undef local_irq_restore
-#undef local_irq_disable
-#undef local_irq_enable
-#undef local_save_flags
-#undef local_irq_restore
-#undef local_irq_enable
-#undef local_irq_disable
-#undef local_irq_save
+#undef raw_local_irq_save
+#undef raw_local_irq_restore
+#undef raw_local_irq_disable
+#undef raw_local_irq_enable
+#undef raw_local_save_flags
+#undef raw_local_irq_restore
+#undef raw_local_irq_enable
+#undef raw_local_irq_disable
+#undef raw_local_irq_save
#undef irqs_disabled

extern void *switch_to(void *prev, void *next, void *last);
@@ -23,21 +23,21 @@ extern int get_signals(void);
extern void block_signals(void);
extern void unblock_signals(void);

-#define local_save_flags(flags) do { typecheck(unsigned long, flags); \
+#define raw_local_save_flags(flags) do { typecheck(unsigned long, flags); \
(flags) = get_signals(); } while(0)
-#define local_irq_restore(flags) do { typecheck(unsigned long, flags); \
+#define raw_local_irq_restore(flags) do { typecheck(unsigned long, flags); \
set_signals(flags); } while(0)

-#define local_irq_save(flags) do { local_save_flags(flags); \
- local_irq_disable(); } while(0)
+#define raw_local_irq_save(flags) do { raw_local_save_flags(flags); \
+ raw_local_irq_disable(); } while(0)

-#define local_irq_enable() unblock_signals()
-#define local_irq_disable() block_signals()
+#define raw_local_irq_enable() unblock_signals()
+#define raw_local_irq_disable() block_signals()

#define irqs_disabled() \
({ \
unsigned long flags; \
- local_save_flags(flags); \
+ raw_local_save_flags(flags); \
(flags == 0); \
})

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