lkml.org 
[lkml]   [2015]   [Jul]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] zsmalloc: use class->pages_per_zspage
On (07/16/15 08:42), Minchan Kim wrote:
> There is no need to recalcurate pages_per_zspage in runtime.
> Just use class->pages_per_zspage to avoid unnecessary runtime
> overhead.
>
> Signed-off-by: Minchan Kim <minchan@kernel.org>
> ---
> mm/zsmalloc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
> index 27b9661c8fa6..154a30e9c8a8 100644
> --- a/mm/zsmalloc.c
> +++ b/mm/zsmalloc.c
> @@ -1711,7 +1711,7 @@ static unsigned long zs_can_compact(struct size_class *class)
> obj_wasted /= get_maxobj_per_zspage(class->size,
> class->pages_per_zspage);
>
> - return obj_wasted * get_pages_per_zspage(class->size);
> + return obj_wasted * class->pages_per_zspage;
> }

plus __zs_compact():

@@ -1761,8 +1761,7 @@ static void __zs_compact(struct zs_pool *pool, struct size_class *class)

putback_zspage(pool, class, dst_page);
if (putback_zspage(pool, class, src_page) == ZS_EMPTY)
- pool->stats.pages_compacted +=
- get_pages_per_zspage(class->size);
+ pool->stats.pages_compacted += class->pages_per_zspage;
spin_unlock(&class->lock);
cond_resched();
spin_lock(&class->lock);

-ss


\
 
 \ /
  Last update: 2015-07-16 02:21    [W:0.356 / U:0.444 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site