Merge branch 'x86/core' into x86/apic

[karo-tx-linux.git] / include / asm-x86 / nmi.h

diff --git a/include/asm-x86/nmi.h b/include/asm-x86/nmi.h
index f0e435dd38fbb247e2b6f62c4810738d23533147..f8b76f38390407bbe1b159e2c8b71175201fc5e1 100644 (file)
--- a/include/asm-x86/nmi.h
+++ b/include/asm-x86/nmi.h
@@ -1,5 +1,5 @@
-#ifndef _ASM_X86_NMI_H_
-#define _ASM_X86_NMI_H_
+#ifndef ASM_X86__NMI_H
+#define ASM_X86__NMI_H
 
 #include <linux/pm.h>
 #include <asm/irq.h>
@@ -20,7 +20,6 @@ extern void default_do_nmi(struct pt_regs *);
 #endif
 
 extern void die_nmi(char *str, struct pt_regs *regs, int do_panic);
-extern void nmi_watchdog_default(void);
 extern int check_nmi_watchdog(void);
 extern int nmi_watchdog_enabled;
 extern int avail_to_resrv_perfctr_nmi_bit(unsigned int);
@@ -38,12 +37,10 @@ extern int nmi_watchdog_tick(struct pt_regs *regs, unsigned reason);
 
 extern atomic_t nmi_active;
 extern unsigned int nmi_watchdog;
-#define NMI_DISABLED    -1
 #define NMI_NONE       0
 #define NMI_IO_APIC    1
 #define NMI_LOCAL_APIC 2
 #define NMI_INVALID    3
-#define NMI_DEFAULT    NMI_DISABLED
 
 struct ctl_table;
 struct file;
@@ -59,6 +56,19 @@ static inline void localise_nmi_watchdog(void)
        if (nmi_watchdog == NMI_IO_APIC)
                nmi_watchdog = NMI_LOCAL_APIC;
 }
+
+/* check if nmi_watchdog is active (ie was specified at boot) */
+static inline int nmi_watchdog_active(void)
+{
+       /*
+        * actually it should be:
+        *      return (nmi_watchdog == NMI_LOCAL_APIC ||
+        *              nmi_watchdog == NMI_IO_APIC)
+        * but since they are power of two we could use a
+        * cheaper way --cvg
+        */
+       return nmi_watchdog & 0x3;
+}
 #endif
 
 void lapic_watchdog_stop(void);
@@ -71,4 +81,4 @@ void enable_lapic_nmi_watchdog(void);
 void stop_nmi(void);
 void restart_nmi(void);
 
-#endif
+#endif /* ASM_X86__NMI_H */