Messages in this thread | | | Date | Mon, 27 Apr 2015 15:43:44 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH 07/13] mm: meminit: Initialise a subset of struct pages if CONFIG_DEFERRED_STRUCT_PAGE_INIT is set |
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On Thu, 23 Apr 2015 11:33:10 +0100 Mel Gorman <mgorman@suse.de> wrote:
> This patch initalises all low memory struct pages and 2G of the highest zone > on each node during memory initialisation if CONFIG_DEFERRED_STRUCT_PAGE_INIT > is set. That config option cannot be set but will be available in a later > patch. Parallel initialisation of struct page depends on some features > from memory hotplug and it is necessary to alter alter section annotations. > > ... > > +#ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT > +#define __defermem_init __meminit > +#define __defer_init __meminit > +#else > +#define __defermem_init > +#define __defer_init __init > +#endif
Could we get some comments describing these? What they do, when and where they should be used. I have a suspicion that the naming isn't good, but I didn't spend a lot of time reverse-engineering the intent...
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