linux-kernel - Re: [PATCH 4/6] kexec: A new system call, kexec_file

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Message-ID: <20131202154437.GF18642@redhat.com>
Date:	Mon, 2 Dec 2013 10:44:37 -0500
From:	Vivek Goyal <vgoyal@...hat.com>
To:	Baoquan He <bhe@...hat.com>
Cc:	linux-kernel@...r.kernel.org, kexec@...ts.infradead.org,
	mjg59@...f.ucam.org, greg@...ah.com, ebiederm@...ssion.com,
	hpa@...or.com
Subject: Re: [PATCH 4/6] kexec: A new system call, kexec_file_load, for in
 kernel kexec

On Fri, Nov 29, 2013 at 11:10:48AM +0800, Baoquan He wrote:

[..]
> > +void *arch_kexec_kernel_image_load(struct kimage *image, char *kernel,
> > +			unsigned long kernel_len, char *initrd,
> > +			unsigned long initrd_len, char *cmdline,
> > +			unsigned long cmdline_len)
> > +{
> > +	int idx = image->file_handler_idx;
> > +
> > +	if (idx < 0)
> > +		return ERR_PTR(-ENOEXEC);
> > +
> > +	return kexec_file_type[idx].load(image, kernel, kernel_len, initrd,
> > +					initrd_len, cmdline, cmdline_len);
> > +}
> > +
> > +int arch_image_file_post_load_cleanup(struct kimage *image)
> > +{
> 
> Hi Vivek,
> 
> This function is defined as one of arch specific fucntion set, why don't
> we name it in a unified prefix as others.

I am using "arch_" prefix. What else to use?

> 
> And name of the default dummy function in kernel/kexec.c is not consistent
> with the arch specific one, so currently
> arch_image_file_post_load_cleanup of x86 arch is not called. Please
> consider wihch one need be changed.

Good catch Bao. I should change arch_image_file_post_load_cleanup() to
arch_kimage_file_post_load_cleanup(), otherwise it never gets called and
memory leaks.

Thanks
Vivek
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