From: Cliff Wickman Date: Mon, 9 Aug 2010 21:11:22 +0000 (-0500) Subject: x86, UV: Make kdump avoid stack dumps - fix !CONFIG_KEXEC breakage X-Git-Tag: firefly_0821_release~9833^2~760^2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=1d6225e8cc5598f2bc5c992f9c88b1137763e8e1;p=firefly-linux-kernel-4.4.55.git 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 Cc: Andrew Morton LKML-Reference: Signed-off-by: H. Peter Anvin --- diff --git a/arch/x86/include/asm/kdebug.h b/arch/x86/include/asm/kdebug.h index 7a2910b3512b..5bdfca86581b 100644 --- a/arch/x86/include/asm/kdebug.h +++ b/arch/x86/include/asm/kdebug.h @@ -33,6 +33,11 @@ extern void __show_regs(struct pt_regs *regs, int all); extern void show_regs(struct pt_regs *regs); extern unsigned long oops_begin(void); extern void oops_end(unsigned long, struct pt_regs *, int signr); +#ifdef CONFIG_KEXEC 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 */