Messages in this thread Patch in this message | | | 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 |
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Functions to remember reclaim priority per cgroup (as zone->prev_priority)
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
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 from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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