um: kill system-um.h

most of it belonged in irqflags.h, actually Signed-off-by: Al Viro <[email protected]> Signed-off-by: Richard Weinberger <[email protected]>
oleg-nesterov · Nov 2, 2011 · a34978c · a34978c
1 parent b8c655d
commit a34978c
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Showing 3 changed files with 40 additions and 47 deletions.
diff --git a/arch/um/include/asm/irqflags.h b/arch/um/include/asm/irqflags.h
@@ -1,6 +1,42 @@
 #ifndef __UM_IRQFLAGS_H
 #define __UM_IRQFLAGS_H
 
-/* Empty for now */
+extern int get_signals(void);
+extern int set_signals(int enable);
+extern void block_signals(void);
+extern void unblock_signals(void);
+
+static inline unsigned long arch_local_save_flags(void)
+{
+	return get_signals();
+}
+
+static inline void arch_local_irq_restore(unsigned long flags)
+{
+	set_signals(flags);
+}
+
+static inline void arch_local_irq_enable(void)
+{
+	unblock_signals();
+}
+
+static inline void arch_local_irq_disable(void)
+{
+	block_signals();
+}
+
+static inline unsigned long arch_local_irq_save(void)
+{
+	unsigned long flags;
+	flags = arch_local_save_flags();
+	arch_local_irq_disable();
+	return flags;
+}
+
+static inline bool arch_irqs_disabled(void)
+{
+	return arch_local_save_flags() == 0;
+}
 
 #endif
diff --git a/arch/um/include/asm/system-um.h b/arch/um/include/asm/system-um.h
diff --git a/arch/x86/um/asm/system.h b/arch/x86/um/asm/system.h
@@ -6,7 +6,6 @@
 #include <asm/cpufeature.h>
 #include <asm/cmpxchg.h>
 #include <asm/nops.h>
-#include <asm/system-um.h>
 
 #include <linux/kernel.h>
 #include <linux/irqflags.h>
@@ -130,4 +129,7 @@ static inline void rdtsc_barrier(void)
 	alternative(ASM_NOP3, "lfence", X86_FEATURE_LFENCE_RDTSC);
 }
 
+extern void *_switch_to(void *prev, void *next, void *last);
+#define switch_to(prev, next, last) prev = _switch_to(prev, next, last)
+
 #endif