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SubjectRe: [PATCH] add additional symbols to /sys/kernel/vmcoreinfo data for ppc(64)
On Thu, Oct 09, 2008 at 11:20:27AM -0400, Neil Horman wrote:
> Hey-
> The makdumpdile dump filtering program, in some modes of operation needs
> the node_data and/or contig_page_data symbols to function properly. These
> symbols are missing from the powerpc kernel. This patch adds those symbols in
> properly. Tested successfully by myself and the reporter.
>
> Regards
> Neil
>
> Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
>
>
> machine_kexec.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
>
> diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c
> index aab7688..2f9b5aa 100644
> --- a/arch/powerpc/kernel/machine_kexec.c
> +++ b/arch/powerpc/kernel/machine_kexec.c
> @@ -44,6 +44,16 @@ void machine_kexec_cleanup(struct kimage *image)
> ppc_md.machine_kexec_cleanup(image);
> }
>
> +void arch_crash_save_vmcoreinfo(void)
> +{
> +#ifdef CONFIG_NEED_MULTIPLE_NODES
> + VMCOREINFO_SYMBOL(node_data);
> + VMCOREINFO_LENGTH(node_data, MAX_NUMNODES);
> +#else
> + VMCOREINFO_SYMBOL(contig_page_data);
> +#endif
> +}
> +

Hi Neil,

Looks like contig_page_data is already being saved in arch independent
portion of kexec (crash_save_vmcoreinfo_init()). We probably don't need
to save it here again?

#ifndef CONFIG_NEED_MULTIPLE_NODES
VMCOREINFO_SYMBOL(mem_map);
VMCOREINFO_SYMBOL(contig_page_data);
#endif

Thanks
Vivek


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