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sync: add timestamps to sync_pts

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Change-Id: I2ad855072b86873880769a09a3176e85aa1199d7
Signed-off-by: Erik Gilling <konkers@android.com>
This commit is contained in:
Erik Gilling 2012-03-15 14:59:33 -07:00
parent d9259a27e3
commit 2165ebdd42
2 changed files with 10 additions and 0 deletions
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5
drivers/base/sync.c
View File

@ -155,12 +155,17 @@ void sync_pt_free(struct sync_pt *pt)
/* call with pt->parent->active_list_lock held */
static int _sync_pt_has_signaled(struct sync_pt *pt)
{
int old_status = pt->status;
if (!pt->status)
pt->status = pt->parent->ops->has_signaled(pt);
if (!pt->status && pt->parent->destroyed)
pt->status = -ENOENT;
if (pt->status != old_status)
pt->timestamp = ktime_get();
return pt->status;
}

5
include/linux/sync.h
View File

@ -16,6 +16,7 @@
#include <linux/types.h>
#ifdef __KERNEL__
#include <linux/ktime.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/wait.h>
@ -90,6 +91,8 @@ struct sync_timeline {
* @fence: sync_fence to which the sync_pt belongs
* @pt_list: membership in sync_fence.pt_list_head
* @status: 1: signaled, 0:active, <0: error
* @timestamp: time which sync_pt status transitioned from active to
* singaled or error.
*/
struct sync_pt {
struct sync_timeline *parent;
@ -102,6 +105,8 @@ struct sync_pt {
/* protected by parent->active_list_lock */
int status;
ktime_t timestamp;
};
/**