From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 27 Nov 2007 12:04:42 +0900 From: KAMEZAWA Hiroyuki Subject: [PATCH][for -mm] per-zone and reclaim enhancements for memory controller take 3 [6/10] remember reclaim priority in memory cgroup Message-Id: <20071127120442.895e4f1b.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20071127115525.e9779108.kamezawa.hiroyu@jp.fujitsu.com> References: <20071127115525.e9779108.kamezawa.hiroyu@jp.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: KAMEZAWA Hiroyuki Cc: Andrew Morton , "balbir@linux.vnet.ibm.com" , "yamamoto@valinux.co.jp" , "linux-mm@kvack.org" , "containers@lists.osdl.org" , LKML List-ID: Functions to remember reclaim priority per cgroup (as zone->prev_priority) Signed-off-by: KAMEZAWA Hiroyuki include/linux/memcontrol.h | 23 +++++++++++++++++++++++ mm/memcontrol.c | 20 ++++++++++++++++++++ 2 files changed, 43 insertions(+) Index: linux-2.6.24-rc3-mm1/mm/memcontrol.c =================================================================== --- linux-2.6.24-rc3-mm1.orig/mm/memcontrol.c 2007-11-27 11:19:51.000000000 +0900 +++ linux-2.6.24-rc3-mm1/mm/memcontrol.c 2007-11-27 11:22:14.000000000 +0900 @@ -132,6 +132,7 @@ */ spinlock_t lru_lock; unsigned long control_type; /* control RSS or RSS+Pagecache */ + int prev_priority; /* for recording reclaim priority */ /* * statistics. */ @@ -452,6 +453,25 @@ return (long) (active / (inactive + 1)); } +/* + * prev_priority control...this will be used in memory reclaim path. + */ +int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem) +{ + return mem->prev_priority; +} + +void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, int priority) +{ + if (priority < mem->prev_priority) + mem->prev_priority = priority; +} + +void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, int priority) +{ + mem->prev_priority = priority; +} + unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan, struct list_head *dst, unsigned long *scanned, int order, Index: linux-2.6.24-rc3-mm1/include/linux/memcontrol.h =================================================================== --- linux-2.6.24-rc3-mm1.orig/include/linux/memcontrol.h 2007-11-27 11:19:00.000000000 +0900 +++ linux-2.6.24-rc3-mm1/include/linux/memcontrol.h 2007-11-27 11:22:14.000000000 +0900 @@ -67,6 +67,11 @@ extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem); extern long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem); +extern int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem); +extern void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, + int priority); +extern void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, + int priority); #else /* CONFIG_CGROUP_MEM_CONT */ @@ -150,6 +155,24 @@ return 0; } +static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem, + int priority) +{ + return 0; +} + +static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, + int priority) +{ + return 0; +} + +static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, + int priority) +{ + return 0; +} + #endif /* CONFIG_CGROUP_MEM_CONT */ #endif /* _LINUX_MEMCONTROL_H */ -- 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: email@kvack.org