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x86/kexec: Remove obsolete 'in_crash_kexec' flag

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Previously, UV NMI used the 'in_crash_kexec' flag to determine whether
we are in a kdump kernel or not:

  5edd19af18 ("x86, UV: Make kdump avoid stack dumps")

But this flags was removed in the following commit:

  9c48f1c629 ("x86, nmi: Wire up NMI handlers to new routines")

Since it isn't used any more, remove it.

Signed-off-by: Minfei Huang <mnfhuang@gmail.com>
Acked-by: Don Zickus <dzickus@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: cpw@sgi.com
Cc: kexec@lists.infradead.org
Cc: mhuang@redhat.com
Link: http://lkml.kernel.org/r/1444070155-17934-1-git-send-email-mhuang@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Minfei Huang 2015-10-06 02:35:55 +08:00 committed by Ingo Molnar
parent 25cb62b764
commit e9c40d257f
2 changed files with 0 additions and 9 deletions
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6
arch/x86/include/asm/kdebug.h
View File

@ -29,11 +29,5 @@ extern void show_trace(struct task_struct *t, struct pt_regs *regs,
extern void __show_regs(struct pt_regs *regs, int all);
extern unsigned long oops_begin(void);
extern void oops_end(unsigned long, struct pt_regs *, int signr);
#ifdef CONFIG_KEXEC_CORE
extern int in_crash_kexec;
#else
/* no crash dump is ever in progress if no crash kernel can be kexec'd */
#define in_crash_kexec 0
#endif
#endif /* _ASM_X86_KDEBUG_H */

3
arch/x86/kernel/crash.c
View File

@ -75,8 +75,6 @@ struct crash_memmap_data {
unsigned int type;
};
int in_crash_kexec;
/*
* This is used to VMCLEAR all VMCSs loaded on the
* processor. And when loading kvm_intel module, the
@ -132,7 +130,6 @@ static void kdump_nmi_callback(int cpu, struct pt_regs *regs)
static void kdump_nmi_shootdown_cpus(void)
{
in_crash_kexec = 1;
nmi_shootdown_cpus(kdump_nmi_callback);
disable_local_APIC();