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authorDon Zickus <dzickus@redhat.com>2011-09-30 15:06:21 -0400
committerIngo Molnar <mingo@elte.hu>2011-10-10 06:56:57 +0200
commit9c48f1c629ecfa114850c03f875c6691003214de (patch)
tree5e454da487c90fc8399ce366aa2437597c9ff5e5 /arch/x86/kernel/apic/hw_nmi.c
parentc9126b2ee8adb9235941cedbf558d39a9e65642d (diff)
downloadlinux-9c48f1c629ecfa114850c03f875c6691003214de.tar.bz2
x86, nmi: Wire up NMI handlers to new routines
Just convert all the files that have an nmi handler to the new routines. Most of it is straight forward conversion. A couple of places needed some tweaking like kgdb which separates the debug notifier from the nmi handler and mce removes a call to notify_die. [Thanks to Ying for finding out the history behind that mce call https://lkml.org/lkml/2010/5/27/114 And Boris responding that he would like to remove that call because of it https://lkml.org/lkml/2011/9/21/163] The things that get converted are the registeration/unregistration routines and the nmi handler itself has its args changed along with code removal to check which list it is on (most are on one NMI list except for kgdb which has both an NMI routine and an NMI Unknown routine). Signed-off-by: Don Zickus <dzickus@redhat.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Corey Minyard <minyard@acm.org> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Robert Richter <robert.richter@amd.com> Cc: Huang Ying <ying.huang@intel.com> Cc: Corey Minyard <minyard@acm.org> Cc: Jack Steiner <steiner@sgi.com> Link: http://lkml.kernel.org/r/1317409584-23662-4-git-send-email-dzickus@redhat.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/apic/hw_nmi.c')
-rw-r--r--arch/x86/kernel/apic/hw_nmi.c27
1 files changed, 5 insertions, 22 deletions
diff --git a/arch/x86/kernel/apic/hw_nmi.c b/arch/x86/kernel/apic/hw_nmi.c
index d5e57db0f7be..31cb9ae992b7 100644
--- a/arch/x86/kernel/apic/hw_nmi.c
+++ b/arch/x86/kernel/apic/hw_nmi.c
@@ -60,22 +60,10 @@ void arch_trigger_all_cpu_backtrace(void)
}
static int __kprobes
-arch_trigger_all_cpu_backtrace_handler(struct notifier_block *self,
- unsigned long cmd, void *__args)
+arch_trigger_all_cpu_backtrace_handler(unsigned int cmd, struct pt_regs *regs)
{
- struct die_args *args = __args;
- struct pt_regs *regs;
int cpu;
- switch (cmd) {
- case DIE_NMI:
- break;
-
- default:
- return NOTIFY_DONE;
- }
-
- regs = args->regs;
cpu = smp_processor_id();
if (cpumask_test_cpu(cpu, to_cpumask(backtrace_mask))) {
@@ -86,21 +74,16 @@ arch_trigger_all_cpu_backtrace_handler(struct notifier_block *self,
show_regs(regs);
arch_spin_unlock(&lock);
cpumask_clear_cpu(cpu, to_cpumask(backtrace_mask));
- return NOTIFY_STOP;
+ return NMI_HANDLED;
}
- return NOTIFY_DONE;
+ return NMI_DONE;
}
-static __read_mostly struct notifier_block backtrace_notifier = {
- .notifier_call = arch_trigger_all_cpu_backtrace_handler,
- .next = NULL,
- .priority = NMI_LOCAL_LOW_PRIOR,
-};
-
static int __init register_trigger_all_cpu_backtrace(void)
{
- register_die_notifier(&backtrace_notifier);
+ register_nmi_handler(NMI_LOCAL, arch_trigger_all_cpu_backtrace_handler,
+ 0, "arch_bt");
return 0;
}
early_initcall(register_trigger_all_cpu_backtrace);