From: Chen Feng <puck.chen@hisilicon.com> To: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Andrew Morton <akpm@linux-foundation.org>, Rik van Riel <riel@redhat.com>, Johannes Weiner <hannes@cmpxchg.org>, <mgorman@techsingularity.net>, "Laura Abbott" <lauraa@codeaurora.org>, Minchan Kim <minchan@kernel.org>, "Marek Szyprowski" <m.szyprowski@samsung.com>, Michal Nazarewicz <mina86@mina86.com>, "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>, Vlastimil Babka <vbabka@suse.cz>, <linux-mm@kvack.org>, <linux-kernel@vger.kernel.org> Subject: Re: [PATCH v6 2/6] mm/cma: introduce new zone, ZONE_CMA Date: Mon, 7 Nov 2016 15:08:49 +0800 [thread overview] Message-ID: <58202881.5030004@hisilicon.com> (raw) In-Reply-To: <20161107061500.GA21159@js1304-P5Q-DELUXE> On 2016/11/7 14:15, Joonsoo Kim wrote: > On Tue, Nov 01, 2016 at 03:58:32PM +0800, Chen Feng wrote: >> Hello, I hava a question on cma zone. >> >> When we have cma zone, cma zone will be the highest zone of system. >> >> In android system, the most memory allocator is ION. Media system will >> alloc unmovable memory from it. >> >> On low memory scene, will the CMA zone always do balance? > > Allocation request for low zone (normal zone) would not cause CMA zone > to be balanced since it isn't helpful. > Yes. But the cma zone will run out soon. And it always need to do balance. How about use migrate cma before movable and let cma type to fallback movable. https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1263745.html >> Should we transmit the highest available zone to kswapd? > > It is already done when necessary. > > Thanks. > > > . >
WARNING: multiple messages have this Message-ID (diff)
From: Chen Feng <puck.chen@hisilicon.com> To: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Andrew Morton <akpm@linux-foundation.org>, Rik van Riel <riel@redhat.com>, Johannes Weiner <hannes@cmpxchg.org>, mgorman@techsingularity.net, Laura Abbott <lauraa@codeaurora.org>, Minchan Kim <minchan@kernel.org>, Marek Szyprowski <m.szyprowski@samsung.com>, Michal Nazarewicz <mina86@mina86.com>, "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>, Vlastimil Babka <vbabka@suse.cz>, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v6 2/6] mm/cma: introduce new zone, ZONE_CMA Date: Mon, 7 Nov 2016 15:08:49 +0800 [thread overview] Message-ID: <58202881.5030004@hisilicon.com> (raw) In-Reply-To: <20161107061500.GA21159@js1304-P5Q-DELUXE> On 2016/11/7 14:15, Joonsoo Kim wrote: > On Tue, Nov 01, 2016 at 03:58:32PM +0800, Chen Feng wrote: >> Hello, I hava a question on cma zone. >> >> When we have cma zone, cma zone will be the highest zone of system. >> >> In android system, the most memory allocator is ION. Media system will >> alloc unmovable memory from it. >> >> On low memory scene, will the CMA zone always do balance? > > Allocation request for low zone (normal zone) would not cause CMA zone > to be balanced since it isn't helpful. > Yes. But the cma zone will run out soon. And it always need to do balance. How about use migrate cma before movable and let cma type to fallback movable. https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1263745.html >> Should we transmit the highest available zone to kswapdi 1/4 ? > > It is already done when necessary. > > Thanks. > > > . > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2016-11-07 7:19 UTC|newest] Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-10-14 3:03 [PATCH v6 0/6] Introduce ZONE_CMA js1304 2016-10-14 3:03 ` js1304 2016-10-14 3:03 ` [PATCH v6 1/6] mm/page_alloc: don't reserve ZONE_HIGHMEM for ZONE_MOVABLE request js1304 2016-10-14 3:03 ` js1304 2016-10-14 3:03 ` [PATCH v6 2/6] mm/cma: introduce new zone, ZONE_CMA js1304 2016-10-14 3:03 ` js1304 2016-11-01 7:58 ` Chen Feng 2016-11-01 7:58 ` Chen Feng 2016-11-07 6:15 ` Joonsoo Kim 2016-11-07 6:15 ` Joonsoo Kim 2016-11-07 7:08 ` Chen Feng [this message] 2016-11-07 7:08 ` Chen Feng 2016-11-07 7:27 ` Joonsoo Kim 2016-11-07 7:27 ` Joonsoo Kim 2016-11-07 7:44 ` Chen Feng 2016-11-07 7:44 ` Chen Feng 2016-11-07 7:46 ` Chen Feng 2016-11-07 7:46 ` Chen Feng 2016-11-08 3:59 ` Joonsoo Kim 2016-11-08 3:59 ` Joonsoo Kim 2016-11-08 6:59 ` Chen Feng 2016-11-08 6:59 ` Chen Feng 2016-11-11 6:38 ` Joonsoo Kim 2016-11-11 6:38 ` Joonsoo Kim 2016-10-14 3:03 ` [PATCH v6 3/6] mm/cma: populate ZONE_CMA js1304 2016-10-14 3:03 ` js1304 2016-10-18 7:42 ` Vlastimil Babka 2016-10-18 7:42 ` Vlastimil Babka 2016-10-18 8:27 ` Joonsoo Kim 2016-10-18 8:27 ` Joonsoo Kim 2016-10-26 4:31 ` Joonsoo Kim 2016-10-26 4:31 ` Joonsoo Kim 2016-10-26 7:27 ` Vlastimil Babka 2016-10-26 7:27 ` Vlastimil Babka 2016-10-14 3:03 ` [PATCH v6 4/6] mm/cma: remove ALLOC_CMA js1304 2016-10-14 3:03 ` js1304 2016-10-14 3:03 ` [PATCH v6 5/6] mm/cma: remove MIGRATE_CMA js1304 2016-10-14 3:03 ` js1304 2016-10-14 3:03 ` [PATCH v6 6/6] mm/cma: remove per zone CMA stat js1304 2016-10-14 3:03 ` js1304 2016-11-07 6:25 ` [PATCH v6 0/6] Introduce ZONE_CMA Joonsoo Kim 2016-11-07 6:25 ` Joonsoo Kim 2016-11-28 7:41 ` Joonsoo Kim 2016-11-28 7:41 ` Joonsoo Kim
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