From: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> To: x86@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org Cc: rientjes@google.com, liuj97@gmail.com, len.brown@intel.com, cl@linux.com, minchan.kim@gmail.com, akpm@linux-foundation.org, kosaki.motohiro@jp.fujitsu.com, wency@cn.fujitsu.com Subject: [PATCH 3/6] acpi,memory-hotplug : add physical memory hotplug code to acpi_memhotplug.c Date: Wed, 3 Oct 2012 19:09:10 +0900 [thread overview] Message-ID: <506C0EC6.9000503@jp.fujitsu.com> (raw) In-Reply-To: <506C0AE8.40702@jp.fujitsu.com> From: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> For hot removing physical memory, the patch adds remove_memory() into acpi_memory_remove_memory(). But we cannot support physical memory hot remove. So remove_memory() do nothinig. CC: David Rientjes <rientjes@google.com> CC: Jiang Liu <liuj97@gmail.com> CC: Len Brown <len.brown@intel.com> CC: Christoph Lameter <cl@linux.com> Cc: Minchan Kim <minchan.kim@gmail.com> CC: Andrew Morton <akpm@linux-foundation.org> CC: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> --- drivers/acpi/acpi_memhotplug.c | 10 ++++++++++ include/linux/memory_hotplug.h | 5 +++++ mm/memory_hotplug.c | 7 +++++++ 3 files changed, 22 insertions(+) Index: linux-3.6/drivers/acpi/acpi_memhotplug.c =================================================================== --- linux-3.6.orig/drivers/acpi/acpi_memhotplug.c 2012-10-03 19:03:10.960400793 +0900 +++ linux-3.6/drivers/acpi/acpi_memhotplug.c 2012-10-03 19:03:26.818401966 +0900 @@ -310,6 +310,9 @@ static int acpi_memory_remove_memory(str { int result; struct acpi_memory_info *info, *n; + int node; + + node = acpi_get_node(mem_device->device->handle); list_for_each_entry_safe(info, n, &mem_device->res_list, list) { if (!info->enabled) @@ -319,6 +322,13 @@ static int acpi_memory_remove_memory(str if (result) return result; + if (node < 0) + node = memory_add_physaddr_to_nid(info->start_addr); + + result = remove_memory(node, info->start_addr, info->length); + if (result) + return result; + list_del(&info->list); kfree(info); } Index: linux-3.6/include/linux/memory_hotplug.h =================================================================== --- linux-3.6.orig/include/linux/memory_hotplug.h 2012-10-03 19:03:10.963400796 +0900 +++ linux-3.6/include/linux/memory_hotplug.h 2012-10-03 19:03:26.820401968 +0900 @@ -222,6 +222,7 @@ static inline void unlock_memory_hotplug #ifdef CONFIG_MEMORY_HOTREMOVE extern int is_mem_section_removable(unsigned long pfn, unsigned long nr_pages); +extern int remove_memory(int nid, u64 start, u64 size); #else static inline int is_mem_section_removable(unsigned long pfn, @@ -229,6 +230,10 @@ static inline int is_mem_section_removab { return 0; } +static inline int remove_memory(int nid, u64 start, u64 size) +{ + return -EBUSY; +} #endif /* CONFIG_MEMORY_HOTREMOVE */ extern int mem_online_node(int nid); Index: linux-3.6/mm/memory_hotplug.c =================================================================== --- linux-3.6.orig/mm/memory_hotplug.c 2012-10-03 19:03:10.962400795 +0900 +++ linux-3.6/mm/memory_hotplug.c 2012-10-03 19:04:15.493404911 +0900 @@ -1042,6 +1042,13 @@ int offline_memory(u64 start, u64 size) return 0; } + +int remove_memory(int nid, u64 start, u64 size) +{ + /* It is not implemented yet*/ + return 0; +} +EXPORT_SYMBOL_GPL(remove_memory); #else int offline_pages(unsigned long start_pfn, unsigned long nr_pages) { -- 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>
WARNING: multiple messages have this Message-ID (diff)
From: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> To: <x86@kernel.org>, <linux-mm@kvack.org>, <linux-kernel@vger.kernel.org>, <linux-acpi@vger.kernel.org> Cc: <rientjes@google.com>, <liuj97@gmail.com>, <len.brown@intel.com>, <cl@linux.com>, <minchan.kim@gmail.com>, <akpm@linux-foundation.org>, <kosaki.motohiro@jp.fujitsu.com>, <wency@cn.fujitsu.com> Subject: [PATCH 3/6] acpi,memory-hotplug : add physical memory hotplug code to acpi_memhotplug.c Date: Wed, 3 Oct 2012 19:09:10 +0900 [thread overview] Message-ID: <506C0EC6.9000503@jp.fujitsu.com> (raw) In-Reply-To: <506C0AE8.40702@jp.fujitsu.com> From: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> For hot removing physical memory, the patch adds remove_memory() into acpi_memory_remove_memory(). But we cannot support physical memory hot remove. So remove_memory() do nothinig. CC: David Rientjes <rientjes@google.com> CC: Jiang Liu <liuj97@gmail.com> CC: Len Brown <len.brown@intel.com> CC: Christoph Lameter <cl@linux.com> Cc: Minchan Kim <minchan.kim@gmail.com> CC: Andrew Morton <akpm@linux-foundation.org> CC: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> --- drivers/acpi/acpi_memhotplug.c | 10 ++++++++++ include/linux/memory_hotplug.h | 5 +++++ mm/memory_hotplug.c | 7 +++++++ 3 files changed, 22 insertions(+) Index: linux-3.6/drivers/acpi/acpi_memhotplug.c =================================================================== --- linux-3.6.orig/drivers/acpi/acpi_memhotplug.c 2012-10-03 19:03:10.960400793 +0900 +++ linux-3.6/drivers/acpi/acpi_memhotplug.c 2012-10-03 19:03:26.818401966 +0900 @@ -310,6 +310,9 @@ static int acpi_memory_remove_memory(str { int result; struct acpi_memory_info *info, *n; + int node; + + node = acpi_get_node(mem_device->device->handle); list_for_each_entry_safe(info, n, &mem_device->res_list, list) { if (!info->enabled) @@ -319,6 +322,13 @@ static int acpi_memory_remove_memory(str if (result) return result; + if (node < 0) + node = memory_add_physaddr_to_nid(info->start_addr); + + result = remove_memory(node, info->start_addr, info->length); + if (result) + return result; + list_del(&info->list); kfree(info); } Index: linux-3.6/include/linux/memory_hotplug.h =================================================================== --- linux-3.6.orig/include/linux/memory_hotplug.h 2012-10-03 19:03:10.963400796 +0900 +++ linux-3.6/include/linux/memory_hotplug.h 2012-10-03 19:03:26.820401968 +0900 @@ -222,6 +222,7 @@ static inline void unlock_memory_hotplug #ifdef CONFIG_MEMORY_HOTREMOVE extern int is_mem_section_removable(unsigned long pfn, unsigned long nr_pages); +extern int remove_memory(int nid, u64 start, u64 size); #else static inline int is_mem_section_removable(unsigned long pfn, @@ -229,6 +230,10 @@ static inline int is_mem_section_removab { return 0; } +static inline int remove_memory(int nid, u64 start, u64 size) +{ + return -EBUSY; +} #endif /* CONFIG_MEMORY_HOTREMOVE */ extern int mem_online_node(int nid); Index: linux-3.6/mm/memory_hotplug.c =================================================================== --- linux-3.6.orig/mm/memory_hotplug.c 2012-10-03 19:03:10.962400795 +0900 +++ linux-3.6/mm/memory_hotplug.c 2012-10-03 19:04:15.493404911 +0900 @@ -1042,6 +1042,13 @@ int offline_memory(u64 start, u64 size) return 0; } + +int remove_memory(int nid, u64 start, u64 size) +{ + /* It is not implemented yet*/ + return 0; +} +EXPORT_SYMBOL_GPL(remove_memory); #else int offline_pages(unsigned long start_pfn, unsigned long nr_pages) {
next prev parent reply other threads:[~2012-10-03 10:09 UTC|newest] Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-10-03 9:52 [PATCH 0/4] acpi,memory-hotplug : implement framework for hot removing memory Yasuaki Ishimatsu 2012-10-03 9:52 ` Yasuaki Ishimatsu 2012-10-03 9:52 ` Yasuaki Ishimatsu 2012-10-03 9:58 ` [PATCH 1/4] acpi,memory-hotplug : add memory offline code to acpi_memory_device_remove() Yasuaki Ishimatsu 2012-10-03 9:58 ` Yasuaki Ishimatsu 2012-10-04 20:53 ` KOSAKI Motohiro 2012-10-04 20:53 ` KOSAKI Motohiro 2012-10-08 6:58 ` Wen Congyang 2012-10-08 6:58 ` Wen Congyang 2012-10-12 19:10 ` KOSAKI Motohiro 2012-10-12 19:10 ` KOSAKI Motohiro 2012-10-17 6:48 ` Wen Congyang 2012-10-17 6:48 ` Wen Congyang 2012-10-17 8:59 ` KOSAKI Motohiro 2012-10-17 8:59 ` KOSAKI Motohiro 2012-10-17 9:08 ` Wen Congyang 2012-10-17 9:08 ` Wen Congyang 2012-10-17 9:18 ` KOSAKI Motohiro 2012-10-17 9:18 ` KOSAKI Motohiro 2012-10-17 9:52 ` Wen Congyang 2012-10-17 9:52 ` Wen Congyang 2012-10-18 1:25 ` Yasuaki Ishimatsu 2012-10-18 1:25 ` Yasuaki Ishimatsu 2012-10-18 1:25 ` Yasuaki Ishimatsu 2012-10-19 7:35 ` Wen Congyang 2012-10-19 7:35 ` Wen Congyang 2012-10-17 9:18 ` Wen Congyang 2012-10-17 9:18 ` Wen Congyang 2012-10-18 19:44 ` KOSAKI Motohiro 2012-10-18 19:44 ` KOSAKI Motohiro 2012-10-19 9:08 ` Wen Congyang 2012-10-19 9:08 ` Wen Congyang 2012-10-19 18:19 ` KOSAKI Motohiro 2012-10-19 18:19 ` KOSAKI Motohiro 2012-10-20 5:02 ` Wen Congyang 2012-10-20 5:02 ` Wen Congyang 2012-10-22 15:11 ` KOSAKI Motohiro 2012-10-22 15:11 ` KOSAKI Motohiro 2012-10-22 15:34 ` KOSAKI Motohiro 2012-10-22 15:34 ` KOSAKI Motohiro 2012-10-03 10:02 ` [PATCH 2/4] acpi,memory-hotplug : rename remove_memory() to offline_memory() Yasuaki Ishimatsu 2012-10-03 10:02 ` Yasuaki Ishimatsu 2012-10-04 21:31 ` KOSAKI Motohiro 2012-10-04 21:31 ` KOSAKI Motohiro 2012-10-08 6:45 ` Wen Congyang 2012-10-08 6:45 ` Wen Congyang 2012-10-12 18:57 ` KOSAKI Motohiro 2012-10-12 18:57 ` KOSAKI Motohiro 2012-10-03 10:09 ` Yasuaki Ishimatsu [this message] 2012-10-03 10:09 ` [PATCH 3/6] acpi,memory-hotplug : add physical memory hotplug code to acpi_memhotplug.c Yasuaki Ishimatsu 2012-10-05 18:54 ` KOSAKI Motohiro 2012-10-05 18:54 ` KOSAKI Motohiro 2012-10-03 10:11 ` [PATCH 4/4] acpi,memory-hotplug : store the node id in acpi_memory_device Yasuaki Ishimatsu 2012-10-03 10:11 ` Yasuaki Ishimatsu 2012-10-03 10:11 ` Yasuaki Ishimatsu 2012-10-05 18:56 ` KOSAKI Motohiro 2012-10-05 18:56 ` KOSAKI Motohiro 2012-10-08 6:47 ` Wen Congyang 2012-10-08 6:47 ` Wen Congyang 2012-10-12 18:59 ` KOSAKI Motohiro 2012-10-12 18:59 ` KOSAKI Motohiro 2012-10-06 14:22 ` [PATCH 0/4] acpi,memory-hotplug : implement framework for hot removing memory Ni zhan Chen 2012-10-06 14:22 ` Ni zhan Chen
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