[POWERPC] irqtrace support for 64-bit powerpc

This adds the low level irq tracing hooks to the powerpc architecture
needed to enable full lockdep functionality.

This is partly based on Johannes Berg's initial version.  I removed
the asm trampoline that isn't needed (thus improving performance) and
modified all sorts of bits and pieces, reworking most of the assembly,
etc...

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 7 insertions, 6 deletions

diff --git a/include/asm-powerpc/hw_irq.h b/include/asm-powerpc/hw_irq.h
index a7b60bf639e0..ad8c9f7fd0e3 100644
--- a/include/asm-powerpc/hw_irq.h
+++ b/include/asm-powerpc/hw_irq.h
@@ -27,7 +27,7 @@ static inline unsigned long local_get_flags(void)
         return flags;
 }
 
-static inline unsigned long local_irq_disable(void)
+static inline unsigned long raw_local_irq_disable(void)
 {
         unsigned long flags, zero;
 
@@ -39,14 +39,15 @@ static inline unsigned long local_irq_disable(void)
         return flags;
 }
 
-extern void local_irq_restore(unsigned long);
+extern void raw_local_irq_restore(unsigned long);
 extern void iseries_handle_interrupts(void);
 
-#define local_irq_enable()      local_irq_restore(1)
-#define local_save_flags(flags) ((flags) = local_get_flags())
-#define local_irq_save(flags)   ((flags) = local_irq_disable())
+#define raw_local_irq_enable()          raw_local_irq_restore(1)
+#define raw_local_save_flags(flags)     ((flags) = local_get_flags())
+#define raw_local_irq_save(flags)       ((flags) = raw_local_irq_disable())
 
-#define irqs_disabled()         (local_get_flags() == 0)
+#define raw_irqs_disabled()             (local_get_flags() == 0)
+#define raw_irqs_disabled_flags(flags)  ((flags) == 0)
 
 #define __hard_irq_enable()     __mtmsrd(mfmsr() | MSR_EE, 1)
 #define __hard_irq_disable()    __mtmsrd(mfmsr() & ~MSR_EE, 1)