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Message-Id: <1462202601-6742-10-git-send-email-gustavo@padovan.org>
Date: Mon, 2 May 2016 12:23:17 -0300
From: Gustavo Padovan <gustavo@...ovan.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
dri-devel@...ts.freedesktop.org,
Daniel Stone <daniels@...labora.com>,
Arve Hjønnevåg <arve@...roid.com>,
Riley Andrews <riandrews@...roid.com>,
Daniel Vetter <daniel.vetter@...ll.ch>,
Rob Clark <robdclark@...il.com>,
Greg Hackmann <ghackmann@...gle.com>,
John Harrison <John.C.Harrison@...el.com>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Sumit Semwal <sumit.semwal@...aro.org>,
Gustavo Padovan <gustavo.padovan@...labora.co.uk>
Subject: [PATCH 09/13] staging/android: bring struct sync_pt back
From: Gustavo Padovan <gustavo.padovan@...labora.co.uk>
Move the list_head members from sync_pt to struct fence was a mistake,
they will not be used by struct fence as planned before, so here we create
sync_pt again to bring the list heads back.
Signed-off-by: Gustavo Padovan <gustavo.padovan@...labora.co.uk>
---
drivers/staging/android/sync.c | 40 ++++++++++++++++++------------------
drivers/staging/android/sync.h | 29 ++++++++++++++++++++++----
drivers/staging/android/sync_debug.c | 16 +++++++--------
include/linux/fence.h | 2 --
4 files changed, 53 insertions(+), 34 deletions(-)
diff --git a/drivers/staging/android/sync.c b/drivers/staging/android/sync.c
index c83a599..aab80ec 100644
--- a/drivers/staging/android/sync.c
+++ b/drivers/staging/android/sync.c
@@ -28,8 +28,6 @@
#define CREATE_TRACE_POINTS
#include "trace/sync.h"
-static const struct fence_ops timeline_fence_ops;
-
struct sync_timeline *sync_timeline_create(const char *drv_name,
const char *name)
{
@@ -90,7 +88,7 @@ EXPORT_SYMBOL(sync_timeline_destroy);
void sync_timeline_signal(struct sync_timeline *obj, unsigned int inc)
{
unsigned long flags;
- struct fence *fence, *next;
+ struct sync_pt *pt, *next;
trace_sync_timeline(obj);
@@ -98,37 +96,37 @@ void sync_timeline_signal(struct sync_timeline *obj, unsigned int inc)
obj->value += inc;
- list_for_each_entry_safe(fence, next, &obj->active_list_head,
+ list_for_each_entry_safe(pt, next, &obj->active_list_head,
active_list) {
- if (fence_is_signaled_locked(fence))
- list_del_init(&fence->active_list);
+ if (fence_is_signaled_locked(&pt->base))
+ list_del_init(&pt->active_list);
}
spin_unlock_irqrestore(&obj->child_list_lock, flags);
}
EXPORT_SYMBOL(sync_timeline_signal);
-struct fence *sync_pt_create(struct sync_timeline *obj, int size,
+struct sync_pt *sync_pt_create(struct sync_timeline *obj, int size,
unsigned int value)
{
unsigned long flags;
- struct fence *fence;
+ struct sync_pt *pt;
- if (size < sizeof(*fence))
+ if (size < sizeof(*pt))
return NULL;
- fence = kzalloc(size, GFP_KERNEL);
- if (!fence)
+ pt = kzalloc(size, GFP_KERNEL);
+ if (!pt)
return NULL;
spin_lock_irqsave(&obj->child_list_lock, flags);
sync_timeline_get(obj);
- fence_init(fence, &timeline_fence_ops, &obj->child_list_lock,
+ fence_init(&pt->base, &timeline_fence_ops, &obj->child_list_lock,
obj->context, value);
- list_add_tail(&fence->child_list, &obj->child_list_head);
- INIT_LIST_HEAD(&fence->active_list);
+ list_add_tail(&pt->child_list, &obj->child_list_head);
+ INIT_LIST_HEAD(&pt->active_list);
spin_unlock_irqrestore(&obj->child_list_lock, flags);
- return fence;
+ return pt;
}
EXPORT_SYMBOL(sync_pt_create);
@@ -148,13 +146,14 @@ static const char *timeline_fence_get_timeline_name(struct fence *fence)
static void timeline_fence_release(struct fence *fence)
{
+ struct sync_pt *pt = fence_to_sync_pt(fence);
struct sync_timeline *parent = fence_parent(fence);
unsigned long flags;
spin_lock_irqsave(fence->lock, flags);
- list_del(&fence->child_list);
- if (WARN_ON_ONCE(!list_empty(&fence->active_list)))
- list_del(&fence->active_list);
+ list_del(&pt->child_list);
+ if (WARN_ON_ONCE(!list_empty(&pt->active_list)))
+ list_del(&pt->active_list);
spin_unlock_irqrestore(fence->lock, flags);
sync_timeline_put(parent);
@@ -170,12 +169,13 @@ static bool timeline_fence_signaled(struct fence *fence)
static bool timeline_fence_enable_signaling(struct fence *fence)
{
+ struct sync_pt *pt = fence_to_sync_pt(fence);
struct sync_timeline *parent = fence_parent(fence);
if (timeline_fence_signaled(fence))
return false;
- list_add_tail(&fence->active_list, &parent->active_list_head);
+ list_add_tail(&pt->active_list, &parent->active_list_head);
return true;
}
@@ -193,7 +193,7 @@ static void timeline_fence_timeline_value_str(struct fence *fence,
snprintf(str, size, "%d", parent->value);
}
-static const struct fence_ops timeline_fence_ops = {
+const struct fence_ops timeline_fence_ops = {
.get_driver_name = timeline_fence_get_driver_name,
.get_timeline_name = timeline_fence_get_timeline_name,
.enable_signaling = timeline_fence_enable_signaling,
diff --git a/drivers/staging/android/sync.h b/drivers/staging/android/sync.h
index f2fbf98..14b61cb 100644
--- a/drivers/staging/android/sync.h
+++ b/drivers/staging/android/sync.h
@@ -60,6 +60,27 @@ static inline struct sync_timeline *fence_parent(struct fence *fence)
child_list_lock);
}
+/**
+ * struct sync_pt - sync_pt object
+ * @base: base fence object
+ * @child_list: sync timeline child's list
+ * @active_list: sync timeline active child's list
+ */
+struct sync_pt {
+ struct fence base;
+ struct list_head child_list;
+ struct list_head active_list;
+};
+
+extern const struct fence_ops timeline_fence_ops;
+
+static inline struct sync_pt *fence_to_sync_pt(struct fence *fence)
+{
+ if (fence->ops != &timeline_fence_ops)
+ return NULL;
+ return container_of(fence, struct sync_pt, base);
+}
+
/*
* API for sync_timeline implementers
*/
@@ -101,13 +122,13 @@ void sync_timeline_signal(struct sync_timeline *obj, unsigned int inc);
* @size: size to allocate for this pt
* @inc: value of the fence
*
- * Creates a new fence as a child of @parent. @size bytes will be
+ * Creates a new sync_pt as a child of @parent. @size bytes will be
* allocated allowing for implementation specific data to be kept after
- * the generic sync_timeline struct. Returns the fence object or
+ * the generic sync_timeline struct. Returns the sync_pt object or
* NULL in case of error.
*/
-struct fence *sync_pt_create(struct sync_timeline *parent, int size,
- unsigned int inc);
+struct sync_pt *sync_pt_create(struct sync_timeline *parent, int size,
+ unsigned int inc);
#ifdef CONFIG_DEBUG_FS
diff --git a/drivers/staging/android/sync_debug.c b/drivers/staging/android/sync_debug.c
index cb0f888..703f198 100644
--- a/drivers/staging/android/sync_debug.c
+++ b/drivers/staging/android/sync_debug.c
@@ -140,9 +140,9 @@ static void sync_print_obj(struct seq_file *s, struct sync_timeline *obj)
spin_lock_irqsave(&obj->child_list_lock, flags);
list_for_each(pos, &obj->child_list_head) {
- struct fence *fence =
- container_of(pos, struct fence, child_list);
- sync_print_fence(s, fence, false);
+ struct sync_pt *pt =
+ container_of(pos, struct sync_pt, child_list);
+ sync_print_fence(s, &pt->base, false);
}
spin_unlock_irqrestore(&obj->child_list_lock, flags);
}
@@ -240,7 +240,7 @@ static long sw_sync_ioctl_create_fence(struct sync_timeline *obj,
{
int fd = get_unused_fd_flags(O_CLOEXEC);
int err;
- struct fence *fence;
+ struct sync_pt *pt;
struct sync_file *sync_file;
struct sw_sync_create_fence_data data;
@@ -252,15 +252,15 @@ static long sw_sync_ioctl_create_fence(struct sync_timeline *obj,
goto err;
}
- fence = sync_pt_create(obj, sizeof(*fence), data.value);
- if (!fence) {
+ pt = sync_pt_create(obj, sizeof(*pt), data.value);
+ if (!pt) {
err = -ENOMEM;
goto err;
}
- sync_file = sync_file_create(fence);
+ sync_file = sync_file_create(&pt->base);
if (!sync_file) {
- fence_put(fence);
+ fence_put(&pt->base);
err = -ENOMEM;
goto err;
}
diff --git a/include/linux/fence.h b/include/linux/fence.h
index 2b17698..5aa95eb 100644
--- a/include/linux/fence.h
+++ b/include/linux/fence.h
@@ -79,8 +79,6 @@ struct fence {
unsigned long flags;
ktime_t timestamp;
int status;
- struct list_head child_list;
- struct list_head active_list;
};
enum fence_flag_bits {
--
2.5.5
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