[Makedumpfile PATCH v2] x86_64: Take care of init_level4_pgt rename in kernel

[Dave Young]

Ccing Dave, not sure if crash utility also need update about this
issue..

On 08/02/17 at 02:13pm, Pratyush Anand wrote:
> Following commit renamed init_level4_pgt to init_top_pgt in kernel.
> 
> commit 65ade2f872b474fa8a04c2d397783350326634e6
> Author: Kirill A. Shutemov <kirill.shutemov at linux.intel.com>
> Date:   Tue Jun 6 14:31:27 2017 +0300
> 
>     x86/boot/64: Rename init_level4_pgt and early_level4_pgt
> 
> This patch takes care of above kernel modification in makedumpfile.
> 
> Signed-off-by: Pratyush Anand <panand at redhat.com>
> ---
> v2 -> v1
> Removed redundant 'if condition' for WRITE_SYMBOL().
> 
>  makedumpfile.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/makedumpfile.c b/makedumpfile.c
> index f85003a33551..30230a15a2e7 100644
> --- a/makedumpfile.c
> +++ b/makedumpfile.c
> @@ -1486,6 +1486,8 @@ get_symbol_info(void)
>  	SYMBOL_INIT(_stext, "_stext");
>  	SYMBOL_INIT(swapper_pg_dir, "swapper_pg_dir");
>  	SYMBOL_INIT(init_level4_pgt, "init_level4_pgt");
> +	if (SYMBOL(init_level4_pgt) == NOT_FOUND_SYMBOL)
> +		SYMBOL_INIT(init_level4_pgt, "init_top_pgt");
>  	SYMBOL_INIT(vmlist, "vmlist");
>  	SYMBOL_INIT(vmap_area_list, "vmap_area_list");
>  	SYMBOL_INIT(node_online_map, "node_online_map");
> @@ -2500,6 +2502,8 @@ read_vmcoreinfo(void)
>  	READ_SYMBOL("_stext", _stext);
>  	READ_SYMBOL("swapper_pg_dir", swapper_pg_dir);
>  	READ_SYMBOL("init_level4_pgt", init_level4_pgt);
> +	if (SYMBOL(init_level4_pgt) == NOT_FOUND_SYMBOL)
> +		READ_SYMBOL("init_top_pgt", init_level4_pgt);
>  	READ_SYMBOL("vmlist", vmlist);
>  	READ_SYMBOL("vmap_area_list", vmap_area_list);
>  	READ_SYMBOL("node_online_map", node_online_map);
> -- 
> 2.9.4
> 
> 
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