#include "mach_traps.h"
-#ifdef CONFIG_SYSCTL
int unknown_nmi_panic;
-static int unknown_nmi_panic_callback(struct pt_regs *regs, int cpu);
-#endif
-
-extern void die_nmi(struct pt_regs *, const char *msg);
-
-#ifndef CONFIG_XEN
-
int nmi_watchdog_enabled;
static cpumask_t backtrace_mask = CPU_MASK_NONE;
static int endflag __initdata = 0;
+#ifdef CONFIG_SMP
/* The performance counters used by NMI_LOCAL_APIC don't trigger when
* the CPU is idle. To make sure the NMI watchdog really ticks on all
* CPUs during the test make them busy.
*/
static __init void nmi_cpu_busy(void *data)
{
-#ifdef CONFIG_SMP
local_irq_enable_in_hardirq();
/* Intentionally don't use cpu_relax here. This is
to make sure that the performance counter really ticks,
care if they get somewhat less cycles. */
while (endflag == 0)
mb();
-#endif
}
+#endif
static int __init check_nmi_watchdog(void)
{
printk(KERN_INFO "Testing NMI watchdog ... ");
+#ifdef CONFIG_SMP
if (nmi_watchdog == NMI_LOCAL_APIC)
smp_call_function(nmi_cpu_busy, (void *)&endflag, 0, 0);
+#endif
for_each_possible_cpu(cpu)
- prev_nmi_count[cpu] = per_cpu(irq_stat, cpu).__nmi_count;
+ prev_nmi_count[cpu] = nmi_count(cpu);
local_irq_enable();
mdelay((20*1000)/nmi_hz); // wait 20 ticks
static struct sysdev_class nmi_sysclass = {
- set_kset_name("lapic_nmi"),
+ .name = "lapic_nmi",
.resume = lapic_nmi_resume,
.suspend = lapic_nmi_suspend,
};
on_each_cpu(__acpi_nmi_disable, NULL, 0, 1);
}
-void setup_apic_nmi_watchdog (void *unused)
+void setup_apic_nmi_watchdog(void *unused)
{
if (__get_cpu_var(wd_enabled))
- return;
+ return;
/* cheap hack to support suspend/resume */
/* if cpu0 is not active neither should the other cpus */
}
EXPORT_SYMBOL(touch_nmi_watchdog);
+extern void die_nmi(struct pt_regs *, const char *msg);
+
__kprobes int nmi_watchdog_tick(struct pt_regs * regs, unsigned reason)
{
unsigned int sum;
int touched = 0;
int cpu = smp_processor_id();
- int rc=0;
+ int rc = 0;
/* check for other users first */
if (notify_die(DIE_NMI, "nmi", regs, reason, 2, SIGINT)
return rc;
}
-#endif /* CONFIG_XEN */
-
-int do_nmi_callback(struct pt_regs * regs, int cpu)
-{
-#ifdef CONFIG_SYSCTL
- if (unknown_nmi_panic)
- return unknown_nmi_panic_callback(regs, cpu);
-#endif
- return 0;
-}
-
#ifdef CONFIG_SYSCTL
static int unknown_nmi_panic_callback(struct pt_regs *regs, int cpu)
return 0;
}
-#ifndef CONFIG_XEN
/*
* proc handler for /proc/sys/kernel/nmi
*/
}
return 0;
}
+
#endif
+int do_nmi_callback(struct pt_regs *regs, int cpu)
+{
+#ifdef CONFIG_SYSCTL
+ if (unknown_nmi_panic)
+ return unknown_nmi_panic_callback(regs, cpu);
#endif
+ return 0;
+}
-#ifndef CONFIG_XEN
void __trigger_all_cpu_backtrace(void)
{
int i;
EXPORT_SYMBOL(nmi_active);
EXPORT_SYMBOL(nmi_watchdog);
-#endif