From: "Christian König" <ckoenig.leichtzumerken@gmail.com>
To: dri-devel@lists.freedesktop.org, chris@chris-wilson.co.uk,
daniel.vetter@ffwll.ch, sumit.semwal@linaro.org,
linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org
Subject: [PATCH 10/10] dma-buf/resv: add other operations
Date: Wed, 21 Aug 2019 14:31:47 +0200 [thread overview]
Message-ID: <20190821123147.110736-11-christian.koenig@amd.com> (raw)
In-Reply-To: <20190821123147.110736-1-christian.koenig@amd.com>
Additional to readers and writers add another class of operations
which never participate in implicit synchronization.
Signed-off-by: Christian König <christian.koenig@amd.com>
---
drivers/dma-buf/dma-resv.c | 27 ++++++++++++++++++++++++---
include/linux/dma-resv.h | 2 ++
2 files changed, 26 insertions(+), 3 deletions(-)
diff --git a/drivers/dma-buf/dma-resv.c b/drivers/dma-buf/dma-resv.c
index 8ef7dbc7fd8e..c6dd6c36dba2 100644
--- a/drivers/dma-buf/dma-resv.c
+++ b/drivers/dma-buf/dma-resv.c
@@ -280,6 +280,7 @@ void dma_resv_init(struct dma_resv *obj)
dma_resv_fences_init(&obj->writers);
dma_resv_fences_init(&obj->readers);
+ dma_resv_fences_init(&obj->others);
}
EXPORT_SYMBOL(dma_resv_init);
@@ -295,6 +296,7 @@ void dma_resv_fini(struct dma_resv *obj)
*/
dma_resv_fences_fini(&obj->writers);
dma_resv_fences_fini(&obj->readers);
+ dma_resv_fences_fini(&obj->others);
ww_mutex_destroy(&obj->lock);
}
EXPORT_SYMBOL(dma_resv_fini);
@@ -334,6 +336,10 @@ void dma_resv_prune_fences(struct dma_resv *obj)
fence = dma_resv_fences_deref(obj, &obj->readers);
if (dma_fence_is_signaled(fence))
dma_resv_fences_set(obj, &obj->readers, NULL);
+
+ fence = dma_resv_fences_deref(obj, &obj->others);
+ if (dma_fence_is_signaled(fence))
+ dma_resv_fences_set(obj, &obj->others, NULL);
}
EXPORT_SYMBOL(dma_resv_prune_fences);
@@ -346,17 +352,19 @@ EXPORT_SYMBOL(dma_resv_prune_fences);
*/
int dma_resv_copy_fences(struct dma_resv *dst, struct dma_resv *src)
{
- struct dma_fence *writers, *readers;
+ struct dma_fence *writers, *readers, *others;
dma_resv_assert_held(dst);
rcu_read_lock();
writers = dma_resv_fences_get_rcu(&src->writers);
readers = dma_resv_fences_get_rcu(&src->readers);
+ others = dma_resv_fences_get_rcu(&src->others);
rcu_read_unlock();
dma_resv_fences_set(dst, &dst->writers, writers);
dma_resv_fences_set(dst, &dst->readers, readers);
+ dma_resv_fences_set(dst, &dst->readers, others);
return 0;
}
@@ -440,12 +448,13 @@ long dma_resv_wait_timeout_rcu(struct dma_resv *obj,
bool wait_all, bool intr,
unsigned long timeout)
{
- struct dma_fence *writers, *readers;
+ struct dma_fence *writers, *readers, *others;
long ret = timeout ? timeout : 1;
rcu_read_lock();
writers = dma_resv_fences_get_rcu(&obj->writers);
readers = dma_resv_fences_get_rcu(&obj->readers);
+ others = dma_resv_fences_get_rcu(&obj->others);
rcu_read_unlock();
if (wait_all && readers) {
@@ -454,12 +463,19 @@ long dma_resv_wait_timeout_rcu(struct dma_resv *obj,
goto out;
}
+ if (wait_all && others) {
+ ret = dma_fence_wait_timeout(others, intr, ret);
+ if (ret <= 0)
+ goto out;
+ }
+
if (writers)
ret = dma_fence_wait_timeout(writers, intr, ret);
out:
dma_fence_put(writers);
dma_fence_put(readers);
+ dma_fence_put(others);
return ret;
}
EXPORT_SYMBOL_GPL(dma_resv_wait_timeout_rcu);
@@ -476,12 +492,13 @@ EXPORT_SYMBOL_GPL(dma_resv_wait_timeout_rcu);
*/
bool dma_resv_test_signaled_rcu(struct dma_resv *obj, bool test_all)
{
- struct dma_fence *writers, *readers;
+ struct dma_fence *writers, *readers, *others;
bool ret = true;
rcu_read_lock();
writers = dma_resv_fences_get_rcu(&obj->writers);
readers = dma_resv_fences_get_rcu(&obj->readers);
+ others = dma_resv_fences_get_rcu(&obj->others);
rcu_read_unlock();
if (writers)
@@ -490,8 +507,12 @@ bool dma_resv_test_signaled_rcu(struct dma_resv *obj, bool test_all)
if (test_all && readers)
ret &= dma_fence_is_signaled(readers);
+ if (test_all && others)
+ ret &= dma_fence_is_signaled(others);
+
dma_fence_put(writers);
dma_fence_put(readers);
+ dma_fence_put(others);
return ret;
}
diff --git a/include/linux/dma-resv.h b/include/linux/dma-resv.h
index 72c3c4f99711..bf8d21cc7720 100644
--- a/include/linux/dma-resv.h
+++ b/include/linux/dma-resv.h
@@ -76,12 +76,14 @@ void dma_resv_fences_commit(struct dma_resv *obj,
* @seq: sequence count for managing RCU read-side synchronization
* @writers: array of write operations for implicit sync
* @readers: array of read operations for implicit sync
+ * @others: other operations not participating in implicit sync
*/
struct dma_resv {
struct ww_mutex lock;
struct dma_resv_fences writers;
struct dma_resv_fences readers;
+ struct dma_resv_fences others;
};
#define dma_resv_held(obj) lockdep_is_held(&(obj)->lock.base)
--
2.17.1
next prev parent reply other threads:[~2019-08-21 12:32 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-21 12:31 [RFC] replacing dma_resv API Christian König
2019-08-21 12:31 ` [PATCH 01/10] dma-buf: make to_dma_fence_array NULL safe Christian König
2019-08-21 12:31 ` [PATCH 02/10] dma-buf: add dma_fence_array_alloc/free Christian König
2019-08-21 12:31 ` [PATCH 03/10] dma-buf: add dma_fence_array_recycle Christian König
2019-08-21 16:24 ` Chris Wilson
2019-08-22 8:38 ` Christian König
2019-08-21 12:31 ` [PATCH 04/10] dma-buf: add dma_fence_array_for_each Christian König
2019-08-21 12:31 ` [PATCH 05/10] dma-buf/resv: add dma_resv_prune_fences Christian König
2019-08-21 14:55 ` Chris Wilson
2019-08-21 14:56 ` Chris Wilson
2019-08-21 12:31 ` [PATCH 06/10] dma-buf/resv: stop pruning shared fences when exclusive is added Christian König
2019-08-21 12:31 ` [PATCH 07/10] dma-buf/resv: add new fences container implementation Christian König
2019-08-21 16:04 ` Daniel Vetter
2019-08-22 8:23 ` Christian König
2019-08-22 13:02 ` Daniel Vetter
2019-08-22 13:53 ` Koenig, Christian
2019-08-21 12:31 ` [PATCH 08/10] dma-buf/resv: replace shared fence with new fences container Christian König
2019-08-21 15:24 ` Chris Wilson
2019-08-21 17:35 ` Chris Wilson
2019-08-22 8:37 ` Christian König
2019-08-22 9:16 ` Christian König
2019-08-21 16:21 ` Chris Wilson
2019-08-24 13:22 ` Chris Wilson
2019-08-21 12:31 ` [PATCH 09/10] dma-buf/resv: replace exclusive " Christian König
2019-08-21 12:31 ` Christian König [this message]
2019-08-22 12:28 ` [PATCH 10/10] dma-buf/resv: add other operations Ville Syrjälä
2019-08-21 16:13 ` [RFC] replacing dma_resv API Daniel Vetter
2019-08-21 20:05 ` Daniel Vetter
2019-08-22 9:27 ` Christian König
2019-08-21 20:11 ` Chris Wilson
2019-08-21 20:22 ` Daniel Vetter
2019-08-22 9:14 ` Christian König
2019-08-22 10:00 ` Daniel Vetter
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190821123147.110736-11-christian.koenig@amd.com \
--to=ckoenig.leichtzumerken@gmail.com \
--cc=chris@chris-wilson.co.uk \
--cc=daniel.vetter@ffwll.ch \
--cc=dri-devel@lists.freedesktop.org \
--cc=linaro-mm-sig@lists.linaro.org \
--cc=linux-media@vger.kernel.org \
--cc=sumit.semwal@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).