[PATCH] i386/x86-64: Remove un/set_nmi_callback and reserve/release_lapic_nmi functions

[platform/adaptation/renesas_rcar/renesas_kernel.git] / arch / x86_64 / kernel / crash.c

diff --git a/arch/x86_64/kernel/crash.c b/arch/x86_64/kernel/crash.c
index d8d5750..44c8af6 100644 (file)
--- a/arch/x86_64/kernel/crash.c
+++ b/arch/x86_64/kernel/crash.c
@@ -23,6 +23,7 @@
 #include <asm/nmi.h>
 #include <asm/hw_irq.h>
 #include <asm/mach_apic.h>
+#include <asm/kdebug.h>
 
 /* This keeps a track of which one is crashing cpu. */
 static int crashing_cpu;
@@ -95,8 +96,18 @@ static void crash_save_self(struct pt_regs *regs)
 #ifdef CONFIG_SMP
 static atomic_t waiting_for_crash_ipi;
 
-static int crash_nmi_callback(struct pt_regs *regs, int cpu)
+static int crash_nmi_callback(struct notifier_block *self,
+                               unsigned long val, void *data)
 {
+       struct pt_regs *regs;
+       int cpu;
+
+       if (val != DIE_NMI)
+               return NOTIFY_OK;
+
+       regs = ((struct die_args *)data)->regs;
+       cpu = raw_smp_processor_id();
+
        /*
         * Don't do anything if this handler is invoked on crashing cpu.
         * Otherwise, system will completely hang. Crashing cpu can get
@@ -127,12 +138,17 @@ static void smp_send_nmi_allbutself(void)
  * cpu hotplug shouldn't matter.
  */
 
+static struct notifier_block crash_nmi_nb = {
+       .notifier_call = crash_nmi_callback,
+};
+
 static void nmi_shootdown_cpus(void)
 {
        unsigned long msecs;
 
        atomic_set(&waiting_for_crash_ipi, num_online_cpus() - 1);
-       set_nmi_callback(crash_nmi_callback);
+       if (register_die_notifier(&crash_nmi_nb))
+               return;         /* return what? */
 
        /*
         * Ensure the new callback function is set before sending