From: "Christian König" <ckoenig.leichtzumerken@gmail.com>
To: intel-gfx@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org,
dri-devel@lists.freedesktop.org, chris@chris-wilson.co.uk
Subject: [PATCH] dma-buf: make dma_fence structure a bit smaller
Date: Wed, 7 Aug 2019 15:54:05 +0200 [thread overview]
Message-ID: <20190807135405.2036-1-christian.koenig@amd.com> (raw)
The ruc and cb_list are never used at the same time.
This smal change is actually making the structure 16% smaller.
Signed-off-by: Christian König <christian.koenig@amd.com>
---
include/linux/dma-fence.h | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/include/linux/dma-fence.h b/include/linux/dma-fence.h
index 05d29dbc7e62..3985c72cd0c2 100644
--- a/include/linux/dma-fence.h
+++ b/include/linux/dma-fence.h
@@ -65,8 +65,10 @@ struct dma_fence_cb;
struct dma_fence {
struct kref refcount;
const struct dma_fence_ops *ops;
- struct rcu_head rcu;
- struct list_head cb_list;
+ union {
+ struct rcu_head rcu;
+ struct list_head cb_list;
+ };
spinlock_t *lock;
u64 context;
u64 seqno;
--
2.17.1
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next reply other threads:[~2019-08-07 13:54 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-07 13:54 Christian König [this message]
2019-08-07 14:01 ` [PATCH] dma-buf: make dma_fence structure a bit smaller Chris Wilson
2019-08-07 21:11 ` Daniel Vetter
-- strict thread matches above, loose matches on Subject: below --
2019-08-08 13:14 Christian König
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