[PATCH] x86_64: Node local pda take 2 -- cpu_pda preparation

[pandora-kernel.git] / arch / x86_64 / kernel / nmi.c

diff --git a/arch/x86_64/kernel/nmi.c b/arch/x86_64/kernel/nmi.c
index 4e44d6e..40575d8 100644 (file)
--- a/arch/x86_64/kernel/nmi.c
+++ b/arch/x86_64/kernel/nmi.c
@@ -14,7 +14,6 @@
 
 #include <linux/config.h>
 #include <linux/mm.h>
-#include <linux/irq.h>
 #include <linux/delay.h>
 #include <linux/bootmem.h>
 #include <linux/smp_lock.h>
@@ -156,19 +155,19 @@ int __init check_nmi_watchdog (void)
                smp_call_function(nmi_cpu_busy, (void *)&endflag, 0, 0);
 
        for (cpu = 0; cpu < NR_CPUS; cpu++)
-               counts[cpu] = cpu_pda[cpu].__nmi_count; 
+               counts[cpu] = cpu_pda(cpu)->__nmi_count;
        local_irq_enable();
        mdelay((10*1000)/nmi_hz); // wait 10 ticks
 
        for (cpu = 0; cpu < NR_CPUS; cpu++) {
                if (!cpu_online(cpu))
                        continue;
-               if (cpu_pda[cpu].__nmi_count - counts[cpu] <= 5) {
+               if (cpu_pda(cpu)->__nmi_count - counts[cpu] <= 5) {
                        endflag = 1;
                        printk("CPU#%d: NMI appears to be stuck (%d->%d)!\n",
                               cpu,
                               counts[cpu],
-                              cpu_pda[cpu].__nmi_count);
+                              cpu_pda(cpu)->__nmi_count);
                        nmi_active = 0;
                        lapic_nmi_owner &= ~LAPIC_NMI_WATCHDOG;
                        nmi_perfctr_msr = 0;
@@ -290,7 +289,7 @@ void enable_timer_nmi_watchdog(void)
 
 static int nmi_pm_active; /* nmi_active before suspend */
 
-static int lapic_nmi_suspend(struct sys_device *dev, u32 state)
+static int lapic_nmi_suspend(struct sys_device *dev, pm_message_t state)
 {
        nmi_pm_active = nmi_active;
        disable_lapic_nmi_watchdog();
@@ -367,7 +366,7 @@ static void setup_k7_watchdog(void)
                | K7_NMI_EVENT;
 
        wrmsr(MSR_K7_EVNTSEL0, evntsel, 0);
-       wrmsr(MSR_K7_PERFCTR0, -(cpu_khz/nmi_hz*1000), -1);
+       wrmsrl(MSR_K7_PERFCTR0, -((u64)cpu_khz * 1000 / nmi_hz));
        apic_write(APIC_LVTPC, APIC_DM_NMI);
        evntsel |= K7_EVNTSEL_ENABLE;
        wrmsr(MSR_K7_EVNTSEL0, evntsel, 0);
@@ -408,8 +407,8 @@ static int setup_p4_watchdog(void)
 
        wrmsr(MSR_P4_CRU_ESCR0, P4_NMI_CRU_ESCR0, 0);
        wrmsr(MSR_P4_IQ_CCCR0, P4_NMI_IQ_CCCR0 & ~P4_CCCR_ENABLE, 0);
-       Dprintk("setting P4_IQ_COUNTER0 to 0x%08lx\n", -(cpu_khz/nmi_hz*1000));
-       wrmsr(MSR_P4_IQ_COUNTER0, -(cpu_khz/nmi_hz*1000), -1);
+       Dprintk("setting P4_IQ_COUNTER0 to 0x%08lx\n", -(cpu_khz * 1000UL / nmi_hz));
+       wrmsrl(MSR_P4_IQ_COUNTER0, -((u64)cpu_khz * 1000 / nmi_hz));
        apic_write(APIC_LVTPC, APIC_DM_NMI);
        wrmsr(MSR_P4_IQ_CCCR0, nmi_p4_cccr_val, 0);
        return 1;
@@ -463,6 +462,8 @@ void touch_nmi_watchdog (void)
         */
        for (i = 0; i < NR_CPUS; i++)
                per_cpu(nmi_touch, i) = 1;
+
+       touch_softlockup_watchdog();
 }
 
 void nmi_watchdog_tick (struct pt_regs * regs, unsigned reason)
@@ -486,8 +487,8 @@ void nmi_watchdog_tick (struct pt_regs * regs, unsigned reason)
                                                        == NOTIFY_STOP) {
                                local_set(&__get_cpu_var(alert_counter), 0);
                                return;
-                       } 
-                       die_nmi("NMI Watchdog detected LOCKUP on CPU%d", regs);
+                       }
+                       die_nmi("NMI Watchdog detected LOCKUP on CPU %d\n", regs);
                }
        } else {
                __get_cpu_var(last_irq_sum) = sum;
@@ -505,7 +506,7 @@ void nmi_watchdog_tick (struct pt_regs * regs, unsigned reason)
                        wrmsr(MSR_P4_IQ_CCCR0, nmi_p4_cccr_val, 0);
                        apic_write(APIC_LVTPC, APIC_DM_NMI);
                }
-               wrmsr(nmi_perfctr_msr, -(cpu_khz/nmi_hz*1000), -1);
+               wrmsrl(nmi_perfctr_msr, -((u64)cpu_khz * 1000 / nmi_hz));
        }
 }
 
@@ -522,14 +523,14 @@ asmlinkage void do_nmi(struct pt_regs * regs, long error_code)
 
        nmi_enter();
        add_pda(__nmi_count,1);
-       if (!nmi_callback(regs, cpu))
+       if (!rcu_dereference(nmi_callback)(regs, cpu))
                default_do_nmi(regs);
        nmi_exit();
 }
 
 void set_nmi_callback(nmi_callback_t callback)
 {
-       nmi_callback = callback;
+       rcu_assign_pointer(nmi_callback, callback);
 }
 
 void unset_nmi_callback(void)