diff options
Diffstat (limited to 'include/linux/shrinker.h')
| -rw-r--r-- | include/linux/shrinker.h | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/include/linux/shrinker.h b/include/linux/shrinker.h index 76f520c4c394..8f80f243fed9 100644 --- a/include/linux/shrinker.h +++ b/include/linux/shrinker.h @@ -19,6 +19,8 @@ struct shrink_control { /* shrink from these nodes */ nodemask_t nodes_to_scan; + /* current node being shrunk (for NUMA aware shrinkers) */ + int nid; }; #define SHRINK_STOP (~0UL) @@ -44,6 +46,8 @@ struct shrink_control { * due to potential deadlocks. If SHRINK_STOP is returned, then no further * attempts to call the @scan_objects will be made from the current reclaim * context. + * + * @flags determine the shrinker abilities, like numa awareness */ struct shrinker { int (*shrink)(struct shrinker *, struct shrink_control *sc); @@ -54,12 +58,18 @@ struct shrinker { int seeks; /* seeks to recreate an obj */ long batch; /* reclaim batch size, 0 = default */ + unsigned long flags; /* These are for internal use */ struct list_head list; - atomic_long_t nr_in_batch; /* objs pending delete */ + /* objs pending delete, per node */ + atomic_long_t *nr_deferred; }; #define DEFAULT_SEEKS 2 /* A good number if you don't know better. */ -extern void register_shrinker(struct shrinker *); + +/* Flags */ +#define SHRINKER_NUMA_AWARE (1 << 0) + +extern int register_shrinker(struct shrinker *); extern void unregister_shrinker(struct shrinker *); #endif |