linux-kernel - [PATCH 2/8] x86 kdump: Move crashing_cpu assignment to nmi_shootdown

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Date:	Wed, 12 Nov 2008 11:34:38 -0200
From:	Eduardo Habkost <ehabkost@...hat.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Avi Kivity <avi@...hat.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Simon Horman <horms@...ge.net.au>,
	Andrew Morton <akpm@...l.org>, Vivek Goyal <vgoyal@...hat.com>,
	Haren Myneni <hbabu@...ibm.com>,
	Andrey Borzenkov <arvidjaar@...l.ru>,
	"Rafael J. Wysocki" <rjw@...k.pl>, kexec@...ts.infradead.org,
	kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
	Eduardo Habkost <ehabkost@...hat.com>
Subject: [PATCH 2/8] x86 kdump: Move crashing_cpu assignment to nmi_shootdown_cpus()

This variable will be moved to non-kdump-specific code.

Signed-off-by: Eduardo Habkost <ehabkost@...hat.com>
---
 arch/x86/kernel/crash.c |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c
index 6047542..ed2f0f9 100644
--- a/arch/x86/kernel/crash.c
+++ b/arch/x86/kernel/crash.c
@@ -29,10 +29,11 @@
 
 #include <mach_ipi.h>
 
+#if defined(CONFIG_SMP) && defined(CONFIG_X86_LOCAL_APIC)
+
 /* This keeps a track of which one is crashing cpu. */
 static int crashing_cpu;
 
-#if defined(CONFIG_SMP) && defined(CONFIG_X86_LOCAL_APIC)
 static atomic_t waiting_for_crash_ipi;
 
 static void kdump_nmi_callback(int cpu, struct die_args *args)
@@ -100,6 +101,9 @@ static void nmi_shootdown_cpus(void)
 {
 	unsigned long msecs;
 
+	/* Make a note of crashing cpu. Will be used in NMI callback.*/
+	crashing_cpu = safe_smp_processor_id();
+
 	atomic_set(&waiting_for_crash_ipi, num_online_cpus() - 1);
 	/* Would it be better to replace the trap vector here? */
 	if (register_die_notifier(&crash_nmi_nb))
@@ -140,8 +144,6 @@ void native_machine_crash_shutdown(struct pt_regs *regs)
 	/* The kernel is broken so disable interrupts */
 	local_irq_disable();
 
-	/* Make a note of crashing cpu. Will be used in NMI callback.*/
-	crashing_cpu = safe_smp_processor_id();
 	nmi_shootdown_cpus();
 	lapic_shutdown();
 #if defined(CONFIG_X86_IO_APIC)
-- 
1.5.5.GIT

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