From: Seth Jennings <sjenning@linux.vnet.ibm.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Seth Jennings <sjenning@linux.vnet.ibm.com>,
Nitin Gupta <ngupta@vflare.org>, Minchan Kim <minchan@kernel.org>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Dan Magenheimer <dan.magenheimer@oracle.com>,
Robert Jennings <rcj@linux.vnet.ibm.com>,
Jenifer Hopper <jhopper@us.ibm.com>, Mel Gorman <mgorman@suse.de>,
Johannes Weiner <jweiner@redhat.com>,
Rik van Riel <riel@redhat.com>,
Larry Woodman <lwoodman@redhat.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
devel@driverdev.osuosl.org
Subject: [PATCH 4/8] staging: zsmalloc: make CLASS_DELTA relative to PAGE_SIZE
Date: Tue, 11 Dec 2012 15:56:02 -0600 [thread overview]
Message-ID: <1355262966-15281-5-git-send-email-sjenning@linux.vnet.ibm.com> (raw)
In-Reply-To: <1355262966-15281-1-git-send-email-sjenning@linux.vnet.ibm.com>
Right now ZS_SIZE_CLASS_DELTA is hardcoded to be 16. This
creates 254 classes for systems with 4k pages. However, on
PPC64 with 64k pages, it creates 4095 classes which is far
too many.
This patch makes ZS_SIZE_CLASS_DELTA relative to PAGE_SIZE
so that regardless of the page size, there will be the same
number of classes.
Signed-off-by: Seth Jennings <sjenning@linux.vnet.ibm.com>
---
drivers/staging/zsmalloc/zsmalloc-main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/zsmalloc/zsmalloc-main.c b/drivers/staging/zsmalloc/zsmalloc-main.c
index 825e124..3543047 100644
--- a/drivers/staging/zsmalloc/zsmalloc-main.c
+++ b/drivers/staging/zsmalloc/zsmalloc-main.c
@@ -141,7 +141,7 @@
* ZS_MIN_ALLOC_SIZE and ZS_SIZE_CLASS_DELTA must be multiple of ZS_ALIGN
* (reason above)
*/
-#define ZS_SIZE_CLASS_DELTA 16
+#define ZS_SIZE_CLASS_DELTA (PAGE_SIZE >> 8)
#define ZS_SIZE_CLASSES ((ZS_MAX_ALLOC_SIZE - ZS_MIN_ALLOC_SIZE) / \
ZS_SIZE_CLASS_DELTA + 1)
--
1.7.9.5
next prev parent reply other threads:[~2012-12-11 21:58 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-11 21:55 [PATCH 0/8] zswap: compressed swap caching Seth Jennings
2012-12-11 21:55 ` [PATCH 1/8] staging: zsmalloc: add gfp flags to zs_create_pool Seth Jennings
2012-12-11 21:56 ` [PATCH 2/8] staging: zsmalloc: remove unsed pool name Seth Jennings
2012-12-11 21:56 ` [PATCH 3/8] staging: zsmalloc: add page alloc/free callbacks Seth Jennings
2012-12-11 21:56 ` Seth Jennings [this message]
2012-12-11 21:56 ` [PATCH 5/8] debugfs: add get/set for atomic types Seth Jennings
2012-12-11 21:56 ` [PATCH 6/8] zsmalloc: promote to lib/ Seth Jennings
2012-12-11 21:56 ` [PATCH 7/8] zswap: add to mm/ Seth Jennings
2013-01-03 16:07 ` Seth Jennings
2012-12-11 21:56 ` [PATCH 8/8] zswap: add documentation Seth Jennings
2012-12-11 22:01 ` [PATCH 0/8] zswap: compressed swap caching Greg Kroah-Hartman
2012-12-12 16:29 ` Seth Jennings
2012-12-12 17:27 ` Dan Magenheimer
2012-12-12 18:32 ` Seth Jennings
2012-12-12 18:36 ` Seth Jennings
2012-12-12 22:49 ` Luigi Semenzato
2012-12-12 23:46 ` Dan Magenheimer
2012-12-14 15:59 ` Seth Jennings
2013-01-03 16:01 ` Seth Jennings
[not found] <<1355262966-15281-1-git-send-email-sjenning@linux.vnet.ibm.com>
[not found] ` <<1355262966-15281-8-git-send-email-sjenning@linux.vnet.ibm.com>
2012-12-31 23:06 ` [PATCH 7/8] zswap: add to mm/ Dan Magenheimer
2013-01-01 17:52 ` Seth Jennings
2013-01-02 15:55 ` Dave Hansen
2013-01-02 17:26 ` Dan Magenheimer
2013-01-02 18:17 ` Dave Hansen
2013-01-02 19:04 ` Dan Magenheimer
2013-01-03 7:33 ` Dave Chinner
2013-01-03 22:37 ` Dan Magenheimer
2013-01-04 2:30 ` Dave Chinner
2013-01-04 15:55 ` Seth Jennings
2013-01-04 18:45 ` Dan Magenheimer
2013-01-22 23:58 ` High slab usage testing with zcache/zswap (Was: [PATCH 7/8] zswap: add to mm/) Dan Magenheimer
2013-01-02 22:44 ` [PATCH 7/8] zswap: add to mm/ Seth Jennings
2013-01-02 17:08 ` Dan Magenheimer
2013-01-02 23:25 ` Seth Jennings
2013-01-03 22:33 ` Dan Magenheimer
2013-01-04 15:42 ` Seth Jennings
2013-01-04 22:45 ` Dan Magenheimer
2013-01-07 14:47 ` Seth Jennings
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