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authorHeiko Carstens <heiko.carstens@de.ibm.com>2006-07-03 00:24:46 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-07-03 15:27:03 -0700
commit1f194a4c393103ac925001d7e04b05fbb122580d (patch)
tree9185dd3ecc6a03f6bc8a15d330c862b86ad23730 /include/asm-s390/irqflags.h
parent6375e2b74c620794e1a27a26e4338aec2e41346a (diff)
downloadop-kernel-dev-1f194a4c393103ac925001d7e04b05fbb122580d.zip
op-kernel-dev-1f194a4c393103ac925001d7e04b05fbb122580d.tar.gz
[PATCH] lockdep: irqtrace subsystem, s390 support
irqtrace support for s390. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-s390/irqflags.h')
-rw-r--r--include/asm-s390/irqflags.h50
1 files changed, 50 insertions, 0 deletions
diff --git a/include/asm-s390/irqflags.h b/include/asm-s390/irqflags.h
new file mode 100644
index 0000000..65f4db6
--- /dev/null
+++ b/include/asm-s390/irqflags.h
@@ -0,0 +1,50 @@
+/*
+ * include/asm-s390/irqflags.h
+ *
+ * Copyright (C) IBM Corp. 2006
+ * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
+ */
+
+#ifndef __ASM_IRQFLAGS_H
+#define __ASM_IRQFLAGS_H
+
+#ifdef __KERNEL__
+
+/* interrupt control.. */
+#define raw_local_irq_enable() ({ \
+ unsigned long __dummy; \
+ __asm__ __volatile__ ( \
+ "stosm 0(%1),0x03" \
+ : "=m" (__dummy) : "a" (&__dummy) : "memory" ); \
+ })
+
+#define raw_local_irq_disable() ({ \
+ unsigned long __flags; \
+ __asm__ __volatile__ ( \
+ "stnsm 0(%1),0xfc" : "=m" (__flags) : "a" (&__flags) ); \
+ __flags; \
+ })
+
+#define raw_local_save_flags(x) \
+ __asm__ __volatile__("stosm 0(%1),0" : "=m" (x) : "a" (&x), "m" (x) )
+
+#define raw_local_irq_restore(x) \
+ __asm__ __volatile__("ssm 0(%0)" : : "a" (&x), "m" (x) : "memory")
+
+#define raw_irqs_disabled() \
+({ \
+ unsigned long flags; \
+ local_save_flags(flags); \
+ !((flags >> __FLAG_SHIFT) & 3); \
+})
+
+static inline int raw_irqs_disabled_flags(unsigned long flags)
+{
+ return !((flags >> __FLAG_SHIFT) & 3);
+}
+
+/* For spinlocks etc */
+#define raw_local_irq_save(x) ((x) = raw_local_irq_disable())
+
+#endif /* __KERNEL__ */
+#endif /* __ASM_IRQFLAGS_H */
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