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From: Richard Kennedy <richard@rsk.demon.co.uk>
To: David Airlie <airlied@linux.ie>,
	Thomas Hellstrom <thellstrom@vmware.com>
Cc: lkml <linux-kernel@vger.kernel.org>, dri-devel@lists.sourceforge.net
Subject: [PATCH] drm/ttm: remove padding from ttm_ref_object on 64bit builds
Date: Tue, 26 Jan 2010 17:10:48 +0000	[thread overview]
Message-ID: <1264525848.2044.5.camel@localhost> (raw)

Re-order structure ttm_ref_object to remove 8 bytes of alignment padding
on 64 bit builds, so shrinking its size from 72 to 64 bytes allowing it
to fit into a smaller slab.

Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
----
patch against 2.6.33-rc5
compiled & tested on x86_64 AMDX2 and nouveau 
regards
Richard


diff --git a/drivers/gpu/drm/ttm/ttm_object.c b/drivers/gpu/drm/ttm/ttm_object.c
index 1099aba..75e9d6f 100644
--- a/drivers/gpu/drm/ttm/ttm_object.c
+++ b/drivers/gpu/drm/ttm/ttm_object.c
@@ -109,8 +109,8 @@ struct ttm_ref_object {
 	struct drm_hash_item hash;
 	struct list_head head;
 	struct kref kref;
-	struct ttm_base_object *obj;
 	enum ttm_ref_type ref_type;
+	struct ttm_base_object *obj;
 	struct ttm_object_file *tfile;
 };
 



             reply	other threads:[~2010-01-26 17:10 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-01-26 17:10 Richard Kennedy [this message]
2010-01-30 15:19 ` [PATCH] drm/ttm: remove padding from ttm_ref_object on 64bit builds Thomas Hellstrom

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