Re: [PATCH V3 0/3] mm/memory_hotplug: Pre-validate the address range with platform

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On 1/20/21 2:07 PM, Anshuman Khandual wrote:
> 
> 
> On 1/19/21 7:10 PM, Oscar Salvador wrote:
>> On Tue, Jan 19, 2021 at 02:33:03PM +0100, David Hildenbrand wrote:
>>> Minor thing, we should make up our mind if we want to call stuff
>>> internally "memhp_" or "mhp". I prefer the latter, because it is shorter.
>>
>> I would rather use the latter as well. I used that in [1].
> 
> Okay, will change all that is 'memhp' as 'mhp' instead.
> 
>> MEMHP_MERGE_RESOURCE should be renamed if we agree on that.
>>
>> [1] https://patchwork.kernel.org/project/linux-mm/cover/20201217130758.11565-1-osalvador@xxxxxxx/
>>

While replacing 'memhp' as 'mhp' in this series, noticed there are
some more 'memhp' scattered around the code from earlier. A mix of
both 'memhp' and 'mhp' might not be a good idea. Hence should we
just change these remaining 'memhp' as 'mhp' as well and possibly
also MEMHP_MERGE_RESOURCE as suggested earlier, in a subsequent
clean up patch ? Would there be a problem with memhp_default_state
being a command line parameter ?

>From a tree wide search -

Documentation/admin-guide/kernel-parameters.txt:        memhp_default_state=online/offline
drivers/base/memory.c:int memhp_online_type_from_str(const char *str)
drivers/base/memory.c:  const int online_type = memhp_online_type_from_str(buf);
drivers/base/memory.c:                    online_type_to_str[memhp_default_online_type]);
drivers/base/memory.c:  const int online_type = memhp_online_type_from_str(buf);
drivers/base/memory.c:  memhp_default_online_type = online_type;
include/linux/memory_hotplug.h:extern int memhp_online_type_from_str(const char *str);
include/linux/memory_hotplug.h:extern int memhp_default_online_type;
mm/memory_hotplug.c:int memhp_default_online_type = MMOP_OFFLINE;
mm/memory_hotplug.c:int memhp_default_online_type = MMOP_ONLINE;
mm/memory_hotplug.c:static int __init setup_memhp_default_state(char *str)
mm/memory_hotplug.c:    const int online_type = memhp_online_type_from_str(str);
mm/memory_hotplug.c:            memhp_default_online_type = online_type;
mm/memory_hotplug.c:__setup("memhp_default_state=", setup_memhp_default_state);
mm/memory_hotplug.c:    mem->online_type = memhp_default_online_type;
mm/memory_hotplug.c:    if (memhp_default_online_type != MMOP_OFFLINE)




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