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mm/zsmalloc: use class->objs_per_zspage to get num of max objects

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num of max objects in zspage is stored in each size_class now.  So there
is no need to re-calculate it.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ganesh Mahendran <[email protected]>
Acked-by: Minchan Kim <[email protected]>
Reviewed-by: Sergey Senozhatsky <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Ganesh Mahendran 2016-07-28 15:47:49 -07:00 • committed by Linus Torvalds
commit b4fd07a086
1 changed files with 7 additions and 11 deletions
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18
mm/zsmalloc.c
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@ -635,8 +635,7 @@ static int zs_stats_size_show(struct seq_file *s, void *v)
freeable = zs_can_compact(class);
spin_unlock(&class->lock);
objs_per_zspage = get_maxobj_per_zspage(class->size,
class->pages_per_zspage);
objs_per_zspage = class->objs_per_zspage;
pages_used = obj_allocated / objs_per_zspage *
class->pages_per_zspage;
@ -1014,8 +1013,7 @@ static void __free_zspage(struct zs_pool *pool, struct size_class *class,
cache_free_zspage(pool, zspage);
zs_stat_dec(class, OBJ_ALLOCATED, get_maxobj_per_zspage(
class->size, class->pages_per_zspage));
zs_stat_dec(class, OBJ_ALLOCATED, class->objs_per_zspage);
atomic_long_sub(class->pages_per_zspage,
&pool->pages_allocated);
}
@ -1366,7 +1364,7 @@ static bool can_merge(struct size_class *prev, int size, int pages_per_zspage)
if (prev->pages_per_zspage != pages_per_zspage)
return false;
if (get_maxobj_per_zspage(prev->size, prev->pages_per_zspage)
if (prev->objs_per_zspage
!= get_maxobj_per_zspage(size, pages_per_zspage))
return false;
@ -1592,8 +1590,7 @@ unsigned long zs_malloc(struct zs_pool *pool, size_t size, gfp_t gfp)
record_obj(handle, obj);
atomic_long_add(class->pages_per_zspage,
&pool->pages_allocated);
zs_stat_inc(class, OBJ_ALLOCATED, get_maxobj_per_zspage(
class->size, class->pages_per_zspage));
zs_stat_inc(class, OBJ_ALLOCATED, class->objs_per_zspage);
/* We completely set up zspage so mark them as movable */
SetZsPageMovable(pool, zspage);
@ -2265,8 +2262,7 @@ static unsigned long zs_can_compact(struct size_class *class)
return 0;
obj_wasted = obj_allocated - obj_used;
obj_wasted /= get_maxobj_per_zspage(class->size,
class->pages_per_zspage);
obj_wasted /= class->objs_per_zspage;
return obj_wasted * class->pages_per_zspage;
}
@ -2473,8 +2469,8 @@ struct zs_pool *zs_create_pool(const char *name)
class->size = size;
class->index = i;
class->pages_per_zspage = pages_per_zspage;
class->objs_per_zspage = class->pages_per_zspage *
PAGE_SIZE / class->size;
class->objs_per_zspage = get_maxobj_per_zspage(class->size,
class->pages_per_zspage);
spin_lock_init(&class->lock);
pool->size_class[i] = class;
for (fullness = ZS_EMPTY; fullness < NR_ZS_FULLNESS;