[PATCH 3/7] AVR32: Add support for irq-flags state tracing

[Haavard Skinnemoen]

Move the irq-flags manipulation to asm/irqflags.h, add the required
raw_ prefix and define TRACE_IRQFLAGS_SUPPORT.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@xxxxxxxxx>
---
 arch/avr32/Kconfig.debug     |    4 ++
 include/asm-avr32/irqflags.h |   68 ++++++++++++++++++++++++++++++++++++++++++
 include/asm-avr32/system.h   |   32 +-------------------
 3 files changed, 73 insertions(+), 31 deletions(-)

diff --git a/arch/avr32/Kconfig.debug b/arch/avr32/Kconfig.debug
index 1b84e20..64ace00 100644
--- a/arch/avr32/Kconfig.debug
+++ b/arch/avr32/Kconfig.debug
@@ -1,5 +1,9 @@
 menu "Kernel hacking"
 
+config TRACE_IRQFLAGS_SUPPORT
+	bool
+	default y
+
 source "lib/Kconfig.debug"
 
 config KPROBES
diff --git a/include/asm-avr32/irqflags.h b/include/asm-avr32/irqflags.h
new file mode 100644
index 0000000..93570da
--- /dev/null
+++ b/include/asm-avr32/irqflags.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2004-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __ASM_AVR32_IRQFLAGS_H
+#define __ASM_AVR32_IRQFLAGS_H
+
+#include <asm/sysreg.h>
+
+static inline unsigned long __raw_local_save_flags(void)
+{
+	return sysreg_read(SR);
+}
+
+#define raw_local_save_flags(x)					\
+	do { (x) = __raw_local_save_flags(); } while (0)
+
+/*
+ * This will restore ALL status register flags, not only the interrupt
+ * mask flag.
+ *
+ * The empty asm statement informs the compiler of this fact while
+ * also serving as a barrier.
+ */
+static inline void raw_local_irq_restore(unsigned long flags)
+{
+	sysreg_write(SR, flags);
+	asm volatile("" : : : "memory", "cc");
+}
+
+static inline void raw_local_irq_disable(void)
+{
+	asm volatile("ssrf %0" : : "n"(SYSREG_GM_OFFSET) : "memory");
+}
+
+static inline void raw_local_irq_enable(void)
+{
+	asm volatile("csrf %0" : : "n"(SYSREG_GM_OFFSET) : "memory");
+}
+
+static inline int raw_irqs_disabled_flags(unsigned long flags)
+{
+	return (flags & SYSREG_BIT(GM)) != 0;
+}
+
+static inline int raw_irqs_disabled(void)
+{
+	unsigned long flags = __raw_local_save_flags();
+
+	return raw_irqs_disabled_flags(flags);
+}
+
+static inline unsigned long __raw_local_irq_save(void)
+{
+	unsigned long flags = __raw_local_save_flags();
+
+	raw_local_irq_disable();
+
+	return flags;
+}
+
+#define raw_local_irq_save(flags)				\
+	do { (flags) = __raw_local_irq_save(); } while (0)
+
+#endif /* __ASM_AVR32_IRQFLAGS_H */
diff --git a/include/asm-avr32/system.h b/include/asm-avr32/system.h
index 583e098..d0c5a1b 100644
--- a/include/asm-avr32/system.h
+++ b/include/asm-avr32/system.h
@@ -69,37 +69,7 @@ # define smp_wmb()		barrier()
 # define smp_read_barrier_depends() do { } while(0)
 #endif
 
-/* Interrupt Control */
-
-#define local_irq_enable()					\
-	asm volatile("csrf %0" : : "n"(SR_GM_BIT) : "memory")
-#define local_irq_disable()					\
-	asm volatile ("ssrf %0" : : "n"(SR_GM_BIT) : "memory")
-#define local_save_flags(x) ((x) = sysreg_read(SR))
-#define irqs_disabled()				\
-	({					\
-		unsigned long flags;		\
-		local_save_flags(flags);	\
-		((flags & SR_GM) != 0);		\
-	})
-
-/*
- * This will restore ALL status register flags, not only the interrupt
- * mask flag.
- *
- * The empty asm statement informs the compiler of this fact (it also
- * serves as a barrier).
- */
-#define local_irq_restore(x)				\
-	do {						\
-		sysreg_write(SR, (x));			\
-		asm volatile("" : : : "memory", "cc");	\
-	} while(0)
-#define local_irq_save(flags)			\
-	do {					\
-		local_save_flags(flags);	\
-		local_irq_disable();		\
-	} while(0)
+#include <linux/irqflags.h>
 
 extern void __xchg_called_with_bad_pointer(void);
 
-- 
1.4.0

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