patch-2.4.26 linux-2.4.26/arch/x86_64/kernel/nmi.c

• Lines: 26
• Date: 2004-04-14 06:05:28.000000000 -0700
• Orig file: linux-2.4.25/arch/x86_64/kernel/nmi.c
• Orig date: 2003-11-28 10:26:19.000000000 -0800

diff -urN linux-2.4.25/arch/x86_64/kernel/nmi.c linux-2.4.26/arch/x86_64/kernel/nmi.c
@@ -34,6 +34,13 @@
 
 int nmi_watchdog_disabled; 
 
+/* Small problem with theaw events is that they stop ticking
+   when the CPU is idling. This means you get varying NMI watchdog
+   frequencies depending on the CPU load.
+
+   I doubt it can be fixed because it's unlikely that the CPU does 
+   performance counters while being in C* states. -AK */
+
 #define K7_EVNTSEL_ENABLE	(1 << 22)
 #define K7_EVNTSEL_INT		(1 << 20)
 #define K7_EVNTSEL_OS		(1 << 17)
@@ -215,6 +222,11 @@
 {
 	unsigned int evntsel;
 
+#if 0
+	/* No check, so can start with slow frequency */
+	nmi_hz = 1; 
+#endif	
+
 	nmi_perfctr_msr = MSR_K7_PERFCTR0;
 
 	clear_msr_range(MSR_K7_EVNTSEL0, 4);