From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wang Nan Date: Fri, 18 Jul 2014 07:56:02 +0000 Subject: [PATCH 4/5] memory-hotplug: sh: suitable memory should go to ZONE_MOVABLE Message-Id: <1405670163-53747-5-git-send-email-wangnan0@huawei.com> List-Id: References: <1405670163-53747-1-git-send-email-wangnan0@huawei.com> In-Reply-To: <1405670163-53747-1-git-send-email-wangnan0@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Ingo Molnar , Yinghai Lu , Mel Gorman , Andrew Morton Cc: Pei Feiyue , linux-mm@kvack.org, x86@kernel.org, linux-ia64@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org This patch add new memory to ZONE_MOVABLE if movable zone is setup and lower than newly added memory for sh. Signed-off-by: Wang Nan --- arch/sh/mm/init.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c index 2d089fe..ff9decc 100644 --- a/arch/sh/mm/init.c +++ b/arch/sh/mm/init.c @@ -487,16 +487,19 @@ void free_initrd_mem(unsigned long start, unsigned long end) #ifdef CONFIG_MEMORY_HOTPLUG int arch_add_memory(int nid, u64 start, u64 size) { - pg_data_t *pgdat; + pg_data_t *pgdat = NODE_DATA(nid); unsigned long start_pfn = start >> PAGE_SHIFT; unsigned long nr_pages = size >> PAGE_SHIFT; + struct zone *zone = pgdat->node_zones + ZONE_NORMAL; + struct zone *movable_zone = pgdat->node_zones + ZONE_MOVABLE; int ret; - pgdat = NODE_DATA(nid); + if (!zone_is_empty(movable_zone)) + if (zone_spans_pfn(movable_zone, start_pfn) || + (zone_end_pfn(movable_zone) <= start_pfn)) + zone = movable_zone; - /* We only have ZONE_NORMAL, so this is easy.. */ - ret = __add_pages(nid, pgdat->node_zones + ZONE_NORMAL, - start_pfn, nr_pages); + ret = __add_pages(nid, zone, start_pfn, nr_pages); if (unlikely(ret)) printk("%s: Failed, __add_pages() = %d\n", __func__, ret); -- 1.8.4