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Message-Id: <1452869739-3304-19-git-send-email-gustavo@padovan.org>
Date: Fri, 15 Jan 2016 12:55:28 -0200
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, 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@...onical.com>,
Gustavo Padovan <gustavo.padovan@...labora.co.uk>
Subject: [RFC 18/29] dma-buf/fence: create default .fence_value_str() and .timeline_value_str()
From: Gustavo Padovan <gustavo.padovan@...labora.co.uk>
Provide simple default functions to help users retrieve the values of the
fence and the timeline.
Signed-off-by: Gustavo Padovan <gustavo.padovan@...labora.co.uk>
---
drivers/dma-buf/fence.c | 31 +++++++++++++++++++++++++++++++
drivers/staging/android/sw_sync.c | 18 ------------------
drivers/staging/android/sync.c | 30 ++----------------------------
drivers/staging/android/sync_debug.c | 11 +----------
include/linux/fence.h | 10 ++--------
include/trace/events/fence.h | 12 +++---------
6 files changed, 39 insertions(+), 73 deletions(-)
diff --git a/drivers/dma-buf/fence.c b/drivers/dma-buf/fence.c
index 786c987..9fdeae8 100644
--- a/drivers/dma-buf/fence.c
+++ b/drivers/dma-buf/fence.c
@@ -620,6 +620,37 @@ void fence_default_release(struct fence *fence)
}
EXPORT_SYMBOL(fence_default_release);
+/**
+ * fence_default_value_str - default .fence_value_str fence ops
+ * @fence: [in] the fence to get the value from
+ * @str: [out] the string pointer to write the value
+ * @size: [in] the size of the allocated string
+ *
+ * This functions returns a string containing the value of the fence.
+ */
+void fence_default_value_str(struct fence *fence, char *str, int size)
+{
+ snprintf(str, size, "%d", fence->seqno);
+}
+EXPORT_SYMBOL(fence_default_value_str);
+
+/**
+ * fence_default_timeline_value_str - default .timeline_value_str fence ops
+ * @fence: [in] the timeline child fence
+ * @str: [out] the string pointer to write the value
+ * @size: [in] the size of the allocated string
+ *
+ * This functions returns a string containing the value of the last signaled
+ * fence in this timeline.
+ */
+void fence_default_timeline_value_str(struct fence *fence, char *str, int size)
+{
+ struct fence_timeline *timeline = fence_parent(fence);
+
+ snprintf(str, size, "%d", timeline->value);
+}
+EXPORT_SYMBOL(fence_default_timeline_value_str);
+
static bool
fence_test_signaled_any(struct fence **fences, uint32_t count)
{
diff --git a/drivers/staging/android/sw_sync.c b/drivers/staging/android/sw_sync.c
index bed6801..cfd7a18 100644
--- a/drivers/staging/android/sw_sync.c
+++ b/drivers/staging/android/sw_sync.c
@@ -51,26 +51,8 @@ static int sw_sync_fill_driver_data(struct fence *fence,
return sizeof(pt->value);
}
-static void sw_sync_timeline_value_str(struct fence_timeline *fence_timeline,
- char *str, int size)
-{
- struct sw_sync_timeline *timeline =
- (struct sw_sync_timeline *)fence_timeline;
- snprintf(str, size, "%d", timeline->value);
-}
-
-static void sw_sync_fence_value_str(struct fence *fence,
- char *str, int size)
-{
- struct sw_sync_pt *pt = (struct sw_sync_pt *)fence;
-
- snprintf(str, size, "%d", pt->value);
-}
-
static struct fence_timeline_ops sw_sync_timeline_ops = {
.fill_driver_data = sw_sync_fill_driver_data,
- .timeline_value_str = sw_sync_timeline_value_str,
- .fence_value_str = sw_sync_fence_value_str,
};
struct sw_sync_timeline *sw_sync_timeline_create(const char *name)
diff --git a/drivers/staging/android/sync.c b/drivers/staging/android/sync.c
index 8216635..147a494 100644
--- a/drivers/staging/android/sync.c
+++ b/drivers/staging/android/sync.c
@@ -331,32 +331,6 @@ static int sync_fence_fill_driver_data(struct fence *fence,
return parent->ops->fill_driver_data(fence, data, size);
}
-static void sync_fence_value_str(struct fence *fence,
- char *str, int size)
-{
- struct fence_timeline *parent = fence_parent(fence);
-
- if (!parent->ops->fence_value_str) {
- if (size)
- *str = 0;
- return;
- }
- parent->ops->fence_value_str(fence, str, size);
-}
-
-static void sync_fence_timeline_value_str(struct fence *fence,
- char *str, int size)
-{
- struct fence_timeline *parent = fence_parent(fence);
-
- if (!parent->ops->timeline_value_str) {
- if (size)
- *str = 0;
- return;
- }
- parent->ops->timeline_value_str(parent, str, size);
-}
-
static const struct fence_ops sync_fence_ops = {
.get_driver_name = fence_default_get_driver_name,
.get_timeline_name = fence_default_get_timeline_name,
@@ -365,8 +339,8 @@ static const struct fence_ops sync_fence_ops = {
.wait = fence_default_wait,
.release = fence_default_release,
.fill_driver_data = sync_fence_fill_driver_data,
- .fence_value_str = sync_fence_value_str,
- .timeline_value_str = sync_fence_timeline_value_str,
+ .fence_value_str = fence_default_value_str,
+ .timeline_value_str = fence_default_timeline_value_str,
};
static void sync_fence_free(struct kref *kref)
diff --git a/drivers/staging/android/sync_debug.c b/drivers/staging/android/sync_debug.c
index db618ca..89b334c 100644
--- a/drivers/staging/android/sync_debug.c
+++ b/drivers/staging/android/sync_debug.c
@@ -133,16 +133,7 @@ static void sync_print_obj(struct seq_file *s, struct fence_timeline *obj)
struct list_head *pos;
unsigned long flags;
- seq_printf(s, "%s %s", obj->name, obj->drv_name);
-
- if (obj->ops->timeline_value_str) {
- char value[64];
-
- obj->ops->timeline_value_str(obj, value, sizeof(value));
- seq_printf(s, ": %s", value);
- }
-
- seq_puts(s, "\n");
+ seq_printf(s, "%s %s: %d\n", obj->name, obj->drv_name, obj->value);
spin_lock_irqsave(&obj->lock, flags);
list_for_each(pos, &obj->child_list_head) {
diff --git a/include/linux/fence.h b/include/linux/fence.h
index e71545e..5371beb 100644
--- a/include/linux/fence.h
+++ b/include/linux/fence.h
@@ -40,19 +40,11 @@ struct fence_cb;
* should return an error if there is not enough room
* as specified by size. This information is returned
* to userspace by SYNC_IOC_FENCE_INFO.
- * @timeline_value_str: fill str with the value of the sync_timeline's counter
* @pt_value_str: fill str with the value of the sync_pt
*/
struct fence_timeline_ops {
/* optional */
int (*fill_driver_data)(struct fence *fence, void *data, int size);
-
- /* optional */
- void (*timeline_value_str)(struct fence_timeline *timeline, char *str,
- int size);
-
- /* optional */
- void (*fence_value_str)(struct fence *fence, char *str, int size);
};
/**
@@ -293,6 +285,8 @@ bool fence_default_signaled(struct fence *fence);
bool fence_default_enable_signaling(struct fence *fence);
signed long fence_default_wait(struct fence *fence, bool intr, signed long timeout);
void fence_default_release(struct fence *fence);
+void fence_default_value_str(struct fence *fence, char *str, int size);
+void fence_default_timeline_value_str(struct fence *fence, char *str, int size);
int fence_add_callback(struct fence *fence, struct fence_cb *cb,
fence_func_t func);
bool fence_remove_callback(struct fence *fence, struct fence_cb *cb);
diff --git a/include/trace/events/fence.h b/include/trace/events/fence.h
index c4d01de..e1ca808 100644
--- a/include/trace/events/fence.h
+++ b/include/trace/events/fence.h
@@ -55,21 +55,15 @@ TRACE_EVENT(fence_timeline,
TP_STRUCT__entry(
__string(name, timeline->name)
- __array(char, value, 32)
+ __field(unsigned int, value)
),
TP_fast_assign(
__assign_str(name, timeline->name);
- if (timeline->ops->timeline_value_str) {
- timeline->ops->timeline_value_str(timeline,
- __entry->value,
- sizeof(__entry->value));
- } else {
- __entry->value[0] = '\0';
- }
+ __entry->value = timeline->value;
),
- TP_printk("name=%s value=%s", __get_str(name), __entry->value)
+ TP_printk("name=%s value=%u", __get_str(name), __entry->value)
);
DECLARE_EVENT_CLASS(fence,
--
2.5.0
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