From: Eduardo Habkost <ehabkost-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>
Cc: Andrew Morton <akpm-3NddpPZAyC0@public.gmane.org>,
Eduardo Habkost
<ehabkost-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
kexec-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
"Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org>,
Haren Myneni <hbabu-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>,
Simon Horman <horms-/R6kz+dDXgpPR4JQBCEnsQ@public.gmane.org>,
Avi Kivity <avi-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Andrey Borzenkov <arvidjaar-JGs/UdohzUI@public.gmane.org>,
Vivek Goyal <vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
"Eric W. Biederman"
<ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
Subject: [PATCH 2/8] x86 kdump: Move crashing_cpu assignment to nmi_shootdown_cpus()
Date: Wed, 12 Nov 2008 11:34:38 -0200 [thread overview]
Message-ID: <1226496884-24628-3-git-send-email-ehabkost@redhat.com> (raw)
In-Reply-To: <1226496884-24628-1-git-send-email-ehabkost-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
This variable will be moved to non-kdump-specific code.
Signed-off-by: Eduardo Habkost <ehabkost-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
---
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
next prev parent reply other threads:[~2008-11-12 13:34 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-12 13:34 [PATCH 0/8] Make nmi_shootdown_cpus() usable by non-kdump code Eduardo Habkost
[not found] ` <1226496884-24628-1-git-send-email-ehabkost-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-11-12 13:34 ` [PATCH 1/8] x86 kdump: Extract kdump-specific code from crash_nmi_callback() Eduardo Habkost
2008-11-12 13:34 ` Eduardo Habkost [this message]
2008-11-12 13:34 ` [PATCH 3/8] x86 kdump: Create kdump_nmi_shootdown_cpus() Eduardo Habkost
2008-11-12 13:34 ` [PATCH 4/8] x86 kdump: Make kdump_nmi_callback() a function ptr on crash_nmi_callback() Eduardo Habkost
2008-11-12 13:34 ` [PATCH 5/8] x86 kdump: Make nmi_shootdown_cpus() non-static Eduardo Habkost
2008-11-12 13:34 ` [PATCH 6/8] x86: Move nmi_shootdown_cpus() to reboot.c Eduardo Habkost
2008-11-12 13:34 ` [PATCH 7/8] x86: Make nmi_shootdown_cpus() available on !SMP and !X86_LOCAL_APIC Eduardo Habkost
2008-11-12 13:34 ` [PATCH 8/8] x86: Disable IRQs before doing anything on nmi_shootdown_cpus() Eduardo Habkost
2008-11-12 17:58 ` [PATCH 0/8] Make nmi_shootdown_cpus() usable by non-kdump code Ingo Molnar
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