From: Michal Hocko <mhocko@kernel.org> To: Andrew Morton <akpm@linux-foundation.org> Cc: Mel Gorman <mgorman@suse.de>, Vlastimil Babka <vbabka@suse.cz>, Andrea Arcangeli <aarcange@redhat.com>, Reza Arbab <arbab@linux.vnet.ibm.com>, Yasuaki Ishimatsu <yasu.isimatu@gmail.com>, qiuxishi@huawei.com, Kani Toshimitsu <toshi.kani@hpe.com>, slaoub@gmail.com, Joonsoo Kim <js1304@gmail.com>, Daniel Kiper <daniel.kiper@oracle.com>, Igor Mammedov <imammedo@redhat.com>, Vitaly Kuznetsov <vkuznets@redhat.com>, Wei Yang <richard.weiyang@gmail.com>, linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>, Joonsoo Kim <iamjoonsoo.kim@lge.com>, linux-api@vger.kernel.org, Michal Hocko <mhocko@suse.com> Subject: [PATCH 0/2] mm, memory_hotplug: remove zone onlining restriction Date: Fri, 14 Jul 2017 14:12:31 +0200 [thread overview] Message-ID: <20170714121233.16861-1-mhocko@kernel.org> (raw) Hi, I have sent this as an RFC previously [1] and there haven't been any fundamental objections to the approach. The biggest concern was that if anybody starts depending on the default online semantic introduced in 4.13 merge window then this would break it [2]. I find it rather unlikely but if we are worried we can try to push this later in the release cycle. Unfortunatelly I didn't have much time to work on this sooner. This work should help Joonsoo with his CMA zone based approach when reusing MOVABLE zone. I think it will also help to remove more code from the memory hotplug (e.g. zone shrinking). Patch 1 restores original memoryXY/valid_zones semantic wrt zone ordering. This can be merged without patch 2 which removes the zone overlap restriction and defines a semantic for the default onlining. See more in the patch. Questions, concerns, objections? Shortlog Michal Hocko (2): mm, memory_hotplug: display allowed zones in the preferred ordering mm, memory_hotplug: remove zone restrictions Diffstat drivers/base/memory.c | 30 ++++++++++----- include/linux/memory_hotplug.h | 2 +- mm/memory_hotplug.c | 87 +++++++++++++++++------------------------- 3 files changed, 55 insertions(+), 64 deletions(-) [1] http://lkml.kernel.org/r/20170629073509.623-1-mhocko@kernel.org [2] http://lkml.kernel.org/r/20170710064540.GA19185@dhcp22.suse.cz
WARNING: multiple messages have this Message-ID (diff)
From: Michal Hocko <mhocko@kernel.org> To: Andrew Morton <akpm@linux-foundation.org> Cc: Mel Gorman <mgorman@suse.de>, Vlastimil Babka <vbabka@suse.cz>, Andrea Arcangeli <aarcange@redhat.com>, Reza Arbab <arbab@linux.vnet.ibm.com>, Yasuaki Ishimatsu <yasu.isimatu@gmail.com>, qiuxishi@huawei.com, Kani Toshimitsu <toshi.kani@hpe.com>, slaoub@gmail.com, Joonsoo Kim <js1304@gmail.com>, Daniel Kiper <daniel.kiper@oracle.com>, Igor Mammedov <imammedo@redhat.com>, Vitaly Kuznetsov <vkuznets@redhat.com>, Wei Yang <richard.weiyang@gmail.com>, linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>, Joonsoo Kim <iamjoonsoo.kim@lge.com>, linux-api@vger.kernel.org, Michal Hocko <mhocko@suse.com> Subject: [PATCH 0/2] mm, memory_hotplug: remove zone onlining restriction Date: Fri, 14 Jul 2017 14:12:31 +0200 [thread overview] Message-ID: <20170714121233.16861-1-mhocko@kernel.org> (raw) Hi, I have sent this as an RFC previously [1] and there haven't been any fundamental objections to the approach. The biggest concern was that if anybody starts depending on the default online semantic introduced in 4.13 merge window then this would break it [2]. I find it rather unlikely but if we are worried we can try to push this later in the release cycle. Unfortunatelly I didn't have much time to work on this sooner. This work should help Joonsoo with his CMA zone based approach when reusing MOVABLE zone. I think it will also help to remove more code from the memory hotplug (e.g. zone shrinking). Patch 1 restores original memoryXY/valid_zones semantic wrt zone ordering. This can be merged without patch 2 which removes the zone overlap restriction and defines a semantic for the default onlining. See more in the patch. Questions, concerns, objections? Shortlog Michal Hocko (2): mm, memory_hotplug: display allowed zones in the preferred ordering mm, memory_hotplug: remove zone restrictions Diffstat drivers/base/memory.c | 30 ++++++++++----- include/linux/memory_hotplug.h | 2 +- mm/memory_hotplug.c | 87 +++++++++++++++++------------------------- 3 files changed, 55 insertions(+), 64 deletions(-) [1] http://lkml.kernel.org/r/20170629073509.623-1-mhocko@kernel.org [2] http://lkml.kernel.org/r/20170710064540.GA19185@dhcp22.suse.cz -- 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 reply other threads:[~2017-07-14 12:13 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-07-14 12:12 Michal Hocko [this message] 2017-07-14 12:12 ` [PATCH 0/2] mm, memory_hotplug: remove zone onlining restriction Michal Hocko 2017-07-14 12:12 ` [PATCH 1/2] mm, memory_hotplug: display allowed zones in the preferred ordering Michal Hocko 2017-07-14 12:12 ` Michal Hocko 2017-07-14 12:12 ` [PATCH 2/2] mm, memory_hotplug: remove zone restrictions Michal Hocko 2017-07-14 12:12 ` Michal Hocko 2017-07-14 12:17 ` Vlastimil Babka 2017-07-14 12:17 ` Vlastimil Babka 2017-07-14 14:26 ` Reza Arbab 2017-07-14 14:26 ` Reza Arbab
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