[PATCH] kexec: Move some memembers and definitions within the scope of CONFIG_KEXEC_FILE

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On 12/22/15 at 07:40pm, Xunlei Pang wrote:
> On 12/22/2015 at 06:47 PM, Minfei Huang wrote:
> > On 12/21/15 at 02:09pm, Xunlei Pang wrote:
> >> diff --git a/include/linux/kexec.h b/include/linux/kexec.h
> > Hi, Xunlei.
> >
> > Following functions will be used only in kexec_file. Please wrap them in
> > CONFIG_KEXEC_FILE.
> >
> > int __weak arch_kexec_kernel_image_probe(struct kimage *image, void *buf,
> > 					 unsigned long buf_len);
> > void * __weak arch_kexec_kernel_image_load(struct kimage *image);
> > int __weak arch_kimage_file_post_load_cleanup(struct kimage *image);
> > int __weak arch_kexec_kernel_verify_sig(struct kimage *image, void *buf,
> > 					unsigned long buf_len);
> > int __weak arch_kexec_apply_relocations_add(const Elf_Ehdr *ehdr,
> > 					Elf_Shdr *sechdrs, unsigned int relsec);
> > int __weak arch_kexec_apply_relocations(const Elf_Ehdr *ehdr, Elf_Shdr *sechdrs,
> > 					unsigned int relsec);
> 
> Thanks for the comment.
> 
> I noticed this as well, but seems for the function declarations we don't need do this,
> since they don't consume the actual space.

Yeah. I think it is better to fold above code as well, since there is
no side effect.

> 
> For example, in the include/linux/timekeeping.h
> /*  
>  * RTC specific
>  */ 
> extern bool timekeeping_rtc_skipsuspend(void);
> extern bool timekeeping_rtc_skipresume(void);
> 
> extern void timekeeping_inject_sleeptime64(struct timespec64 *delta);
> 
> also not embraced by the corresponding macros.

I think it is consistent of the construction to make code more clear.

Thanks
Minfei



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