This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / asm-i386 / mach-xen / asm / irqflags.h

diff --git a/include/asm-i386/mach-xen/asm/irqflags.h b/include/asm-i386/mach-xen/asm/irqflags.h
new file mode 100644 (file)
index 0000000..dc7fd07
--- /dev/null
+++ b/include/asm-i386/mach-xen/asm/irqflags.h
@@ -0,0 +1,80 @@
+/*
+ * include/asm-i386/irqflags.h
+ *
+ * IRQ flags handling
+ *
+ * This file gets included from lowlevel asm headers too, to provide
+ * wrapped versions of the local_irq_*() APIs, based on the
+ * raw_local_irq_*() functions from the lowlevel headers.
+ */
+#ifndef _ASM_IRQFLAGS_H
+#define _ASM_IRQFLAGS_H
+
+#ifndef __ASSEMBLY__
+
+#define raw_local_save_flags(flags) \
+               do { (flags) = __raw_local_save_flags(); } while (0)
+
+unsigned long __raw_local_save_flags(void);
+void raw_local_irq_restore(unsigned long flags);
+void raw_local_irq_disable(void);
+void raw_local_irq_enable(void);
+
+/*
+ * Used in the idle loop; sti takes one instruction cycle
+ * to complete:
+ */
+void raw_safe_halt(void);
+
+/*
+ * Used when interrupts are already enabled or to
+ * shutdown the processor:
+ */
+void halt(void);
+
+static inline int raw_irqs_disabled_flags(unsigned long flags)
+{
+       return flags != 0;
+}
+
+int raw_irqs_disabled(void);
+
+/*
+ * For spinlocks, etc:
+ */
+unsigned long __raw_local_irq_save(void);
+#define raw_local_irq_save(flags) \
+               do { (flags) = __raw_local_irq_save(); } while (0)
+
+#endif /* __ASSEMBLY__ */
+
+/*
+ * Do the CPU's IRQ-state tracing from assembly code. We call a
+ * C function, so save all the C-clobbered registers:
+ */
+#ifdef CONFIG_TRACE_IRQFLAGS
+
+# define TRACE_IRQS_ON                         \
+       pushl %eax;                             \
+       pushl %ecx;                             \
+       pushl %edx;                             \
+       call trace_hardirqs_on;                 \
+       popl %edx;                              \
+       popl %ecx;                              \
+       popl %eax;
+
+# define TRACE_IRQS_OFF                                \
+       pushl %eax;                             \
+       pushl %ecx;                             \
+       pushl %edx;                             \
+       call trace_hardirqs_off;                \
+       popl %edx;                              \
+       popl %ecx;                              \
+       popl %eax;
+
+#else
+# define TRACE_IRQS_ON
+# define TRACE_IRQS_OFF
+#endif
+
+#endif