Re: [patch] tools, vm: new option to specify kpageflags file

[Andrew Morton]

On Tue, 30 Jan 2018 15:01:01 -0800 (PST) David Rientjes <rientjes@xxxxxxxxxx> wrote:

> page-types currently hardcodes /proc/kpageflags as the file to parse.  
> This works when using the tool to examine the state of pageflags on the 
> same system, but does not allow storing a snapshot of pageflags at a given 
> time to debug issues nor on a different system.
> 
> This allows the user to specify a saved version of kpageflags with a new 
> page-types -F option.
> 

This, methinks:

--- a/tools/vm/page-types.c~tools-vm-new-option-to-specify-kpageflags-file-fix
+++ a/tools/vm/page-types.c
@@ -791,7 +791,7 @@ static void usage(void)
 "            -N|--no-summary            Don't show summary info\n"
 "            -X|--hwpoison              hwpoison pages\n"
 "            -x|--unpoison              unpoison pages\n"
-"            -F|--kpageflags            kpageflags file to parse\n"
+"            -F|--kpageflags filename   kpageflags file to parse\n"
 "            -h|--help                  Show this usage message\n"
 "flags:\n"
 "            0x10                       bitfield format, e.g.\n"
_