x86, UV: Make kdump avoid stack dumps - fix !CONFIG_KEXEC breakage
This replaces Version 1 of this patch, which broke the build when CONFIG_KEXEC and CONFIG_CRASH_DUMP were configured off. In that case the storage for the 'in_crash_kexec' flag was never built. This version defines that flag as 0 if CONFIG_KEXEC is not set. The patch is tested with all combinations of those two options. Signed-off-by: Cliff Wickman <cpw@sgi.com> Cc: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <E1OiZcw-0001Hb-2g@eag09.americas.sgi.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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@ -33,6 +33,11 @@ extern void __show_regs(struct pt_regs *regs, int all);
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extern void show_regs(struct pt_regs *regs);
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extern unsigned long oops_begin(void);
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extern void oops_end(unsigned long, struct pt_regs *, int signr);
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#ifdef CONFIG_KEXEC
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extern int in_crash_kexec;
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#else
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/* no crash dump is ever in progress if no crash kernel can be kexec'd */
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#define in_crash_kexec 0
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#endif
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#endif /* _ASM_X86_KDEBUG_H */
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