Messages in this thread | | | Subject | Re: [Linaro-mm-sig] [PATCHv21 12/16] mm: trigger page reclaim in alloc_contig_range() to stabilise watermarks | Date | Mon, 13 Feb 2012 11:38:22 -0800 | From | "Michal Nazarewicz" <> |
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> On Fri, Feb 10, 2012 at 11:32 AM, Marek Szyprowski > <m.szyprowski@samsung.com> wrote: >> @@ -5637,6 +5642,56 @@ static int __alloc_contig_migrate_range(unsigned long start, unsigned long end) >> return ret > 0 ? 0 : ret; >> } >> >> +/* >> + * Update zone's cma pages counter used for watermark level calculation. >> + */ >> +static inline void __update_cma_wmark_pages(struct zone *zone, int count) >> +{ >> + unsigned long flags; >> + spin_lock_irqsave(&zone->lock, flags); >> + zone->min_cma_pages += count; >> + spin_unlock_irqrestore(&zone->lock, flags); >> + setup_per_zone_wmarks(); >> +} >> + >> +/* >> + * Trigger memory pressure bump to reclaim some pages in order to be able to >> + * allocate 'count' pages in single page units. Does similar work as >> + *__alloc_pages_slowpath() function. >> + */ >> +static int __reclaim_pages(struct zone *zone, gfp_t gfp_mask, int count) >> +{ >> + enum zone_type high_zoneidx = gfp_zone(gfp_mask); >> + struct zonelist *zonelist = node_zonelist(0, gfp_mask); >> + int did_some_progress = 0; >> + int order = 1; >> + unsigned long watermark; >> + >> + /* >> + * Increase level of watermarks to force kswapd do his job >> + * to stabilise at new watermark level. >> + */ >> + __modify_min_cma_pages(zone, count);
On Mon, 13 Feb 2012 10:57:58 -0800, Robert Nelson <robertcnelson@gmail.com> wrote: > Hi Marek, This ^^^ function doesn't seem to exist in this patchset, > is it in another set posted to lkml?
This should read __update_cma_wmark_pages(). Sorry for the incorrect patch.
-- Best regards, _ _ .o. | Liege of Serenely Enlightened Majesty of o' \,=./ `o ..o | Computer Science, Michał “mina86” Nazarewicz (o o) ooo +----<email/xmpp: mpn@google.com>--------------ooO--(_)--Ooo-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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