Re: [PATCH v3 4/5] drm/v3d: Decouple stats calculation from printing
On 20/04/2024 22:32, Maíra Canal wrote:
Create a function to decouple the stats calculation from the printing.
This will be useful in the next step when we add a seqcount to protect
the stats.
Signed-off-by: Maíra Canal
---
drivers/gpu/drm/v3d/v3d_drv.c | 18 ++
drivers/gpu/drm/v3d/v3d_drv.h | 4
drivers/gpu/drm/v3d/v3d_sysfs.c | 11 +++
3 files changed, 21 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c
index 52e3ba9df46f..2ec359ed2def 100644
--- a/drivers/gpu/drm/v3d/v3d_drv.c
+++ b/drivers/gpu/drm/v3d/v3d_drv.c
@@ -142,6 +142,15 @@ v3d_postclose(struct drm_device *dev, struct drm_file
*file)
kfree(v3d_priv);
}
+void v3d_get_stats(const struct v3d_stats *stats, u64 timestamp,
+ u64 *active_runtime, u64 *jobs_completed)
+{
+ *active_runtime = stats->enabled_ns;
+ if (stats->start_ns)
+ *active_runtime += timestamp - stats->start_ns;
+ *jobs_completed = stats->jobs_completed;
+}
+
static void v3d_show_fdinfo(struct drm_printer *p, struct drm_file *file)
{
struct v3d_file_priv *file_priv = file->driver_priv;
@@ -150,20 +159,21 @@ static void v3d_show_fdinfo(struct drm_printer *p, struct
drm_file *file)
for (queue = 0; queue < V3D_MAX_QUEUES; queue++) {
struct v3d_stats *stats = &file_priv->stats[queue];
+ u64 active_runtime, jobs_completed;
+
+ v3d_get_stats(stats, timestamp, &active_runtime,
&jobs_completed);
/* Note that, in case of a GPU reset, the time spent during an
* attempt of executing the job is not computed in the runtime.
*/
drm_printf(p, "drm-engine-%s: \t%llu ns\n",
- v3d_queue_to_string(queue),
- stats->start_ns ? stats->enabled_ns + timestamp -
stats->start_ns
- : stats->enabled_ns);
+ v3d_queue_to_string(queue), active_runtime);
/* Note that we only count jobs that completed. Therefore, jobs
* that were resubmitted due to a GPU reset are not computed.
*/
drm_printf(p, "v3d-jobs-%s: \t%llu jobs\n",
- v3d_queue_to_string(queue), stats->jobs_completed);
+ v3d_queue_to_string(queue), jobs_completed);
}
}
diff --git a/drivers/gpu/drm/v3d/v3d_drv.h b/drivers/gpu/drm/v3d/v3d_drv.h
index 5a198924d568..ff06dc1cc078 100644
--- a/drivers/gpu/drm/v3d/v3d_drv.h
+++ b/drivers/gpu/drm/v3d/v3d_drv.h
@@ -510,6 +510,10 @@ struct drm_gem_object *v3d_prime_import_sg_table(struct
drm_device *dev,
/* v3d_debugfs.c */
void v3d_debugfs_init(struct drm_minor *minor);
+/* v3d_drv.c */
+void v3d_get_stats(const struct v3d_stats *stats, u64 timestamp,
+ u64 *active_runtime, u64 *jobs_completed);
+
/* v3d_fence.c */
extern const struct dma_fence_ops v3d_fence_ops;
struct dma_fence *v3d_fence_create(struct v3d_dev *v3d, enum v3d_queue queue);
diff --git a/drivers/gpu/drm/v3d/v3d_sysfs.c b/drivers/gpu/drm/v3d/v3d_sysfs.c
index 6a8e7acc8b82..d610e355964f 100644
--- a/drivers/gpu/drm/v3d/v3d_sysfs.c
+++ b/drivers/gpu/drm/v3d/v3d_sysfs.c
@@ -15,18 +15,15 @@ gpu_stats_show(struct device *dev, struct device_attribute
*attr, char *buf)
struct v3d_dev *v3d = to_v3d_dev(drm);
enum v3d_queue queue;
u64 timestamp = local_clock();
- u64 active_runtime;
ssize_t len = 0;
len += sysfs_emit(buf, "queue\ttimestamp\tjobs\truntime\n");
for (queue = 0; queue < V3D_MAX_QUEUES; queue++) {
struct v3d_stats *stats = &v3d->queue[queue].stats;
+ u64 active_runtime, jobs_completed;
- if (stats->start_ns)
- active_runtime = timestamp - stats->start_ns;
- else
- active_runtime = 0;
+ v3d_get_stats(stats, timestamp, &active_runtime,
&jobs_completed);
/* Each line will display the queue name, timestamp, the number
* of jobs sent to that queue and the runtime, as can be seem
here:
@@ -40,9 +37,7 @@ gpu_stats_show(struct device *dev, struct device_attribute
*attr, char *buf)
*/
len += sysfs_emit_at(buf, len, "%s\t%llu\t%llu\t%llu\n",
v3d_queue_to_string(queue),
-timestamp,
-stats->jobs_completed,
-stats->enabled_ns + active_runtime);
+timestamp, jobs_completed, active_runtime);
}
return len;
Reviewed-by: Tvrtko Ursulin
Regards,
Tvrtko
[PATCH v3 4/5] drm/v3d: Decouple stats calculation from printing
Create a function to decouple the stats calculation from the printing.
This will be useful in the next step when we add a seqcount to protect
the stats.
Signed-off-by: Maíra Canal
---
drivers/gpu/drm/v3d/v3d_drv.c | 18 ++
drivers/gpu/drm/v3d/v3d_drv.h | 4
drivers/gpu/drm/v3d/v3d_sysfs.c | 11 +++
3 files changed, 21 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c
index 52e3ba9df46f..2ec359ed2def 100644
--- a/drivers/gpu/drm/v3d/v3d_drv.c
+++ b/drivers/gpu/drm/v3d/v3d_drv.c
@@ -142,6 +142,15 @@ v3d_postclose(struct drm_device *dev, struct drm_file
*file)
kfree(v3d_priv);
}
+void v3d_get_stats(const struct v3d_stats *stats, u64 timestamp,
+ u64 *active_runtime, u64 *jobs_completed)
+{
+ *active_runtime = stats->enabled_ns;
+ if (stats->start_ns)
+ *active_runtime += timestamp - stats->start_ns;
+ *jobs_completed = stats->jobs_completed;
+}
+
static void v3d_show_fdinfo(struct drm_printer *p, struct drm_file *file)
{
struct v3d_file_priv *file_priv = file->driver_priv;
@@ -150,20 +159,21 @@ static void v3d_show_fdinfo(struct drm_printer *p, struct
drm_file *file)
for (queue = 0; queue < V3D_MAX_QUEUES; queue++) {
struct v3d_stats *stats = &file_priv->stats[queue];
+ u64 active_runtime, jobs_completed;
+
+ v3d_get_stats(stats, timestamp, &active_runtime,
&jobs_completed);
/* Note that, in case of a GPU reset, the time spent during an
* attempt of executing the job is not computed in the runtime.
*/
drm_printf(p, "drm-engine-%s: \t%llu ns\n",
- v3d_queue_to_string(queue),
- stats->start_ns ? stats->enabled_ns + timestamp -
stats->start_ns
- : stats->enabled_ns);
+ v3d_queue_to_string(queue), active_runtime);
/* Note that we only count jobs that completed. Therefore, jobs
* that were resubmitted due to a GPU reset are not computed.
*/
drm_printf(p, "v3d-jobs-%s: \t%llu jobs\n",
- v3d_queue_to_string(queue), stats->jobs_completed);
+ v3d_queue_to_string(queue), jobs_completed);
}
}
diff --git a/drivers/gpu/drm/v3d/v3d_drv.h b/drivers/gpu/drm/v3d/v3d_drv.h
index 5a198924d568..ff06dc1cc078 100644
--- a/drivers/gpu/drm/v3d/v3d_drv.h
+++ b/drivers/gpu/drm/v3d/v3d_drv.h
@@ -510,6 +510,10 @@ struct drm_gem_object *v3d_prime_import_sg_table(struct
drm_device *dev,
/* v3d_debugfs.c */
void v3d_debugfs_init(struct drm_minor *minor);
+/* v3d_drv.c */
+void v3d_get_stats(const struct v3d_stats *stats, u64 timestamp,
+ u64 *active_runtime, u64 *jobs_completed);
+
/* v3d_fence.c */
extern const struct dma_fence_ops v3d_fence_ops;
struct dma_fence *v3d_fence_create(struct v3d_dev *v3d, enum v3d_queue queue);
diff --git a/drivers/gpu/drm/v3d/v3d_sysfs.c b/drivers/gpu/drm/v3d/v3d_sysfs.c
index 6a8e7acc8b82..d610e355964f 100644
--- a/drivers/gpu/drm/v3d/v3d_sysfs.c
+++ b/drivers/gpu/drm/v3d/v3d_sysfs.c
@@ -15,18 +15,15 @@ gpu_stats_show(struct device *dev, struct device_attribute
*attr, char *buf)
struct v3d_dev *v3d = to_v3d_dev(drm);
enum v3d_queue queue;
u64 timestamp = local_clock();
- u64 active_runtime;
ssize_t len = 0;
len += sysfs_emit(buf, "queue\ttimestamp\tjobs\truntime\n");
for (queue = 0; queue < V3D_MAX_QUEUES; queue++) {
struct v3d_stats *stats = &v3d->queue[queue].stats;
+ u64 active_runtime, jobs_completed;
- if (stats->start_ns)
- active_runtime = timestamp - stats->start_ns;
- else
- active_runtime = 0;
+ v3d_get_stats(stats, timestamp, &active_runtime,
&jobs_completed);
/* Each line will display the queue name, timestamp, the number
* of jobs sent to that queue and the runtime, as can be seem
here:
@@ -40,9 +37,7 @@ gpu_stats_show(struct device *dev, struct device_attribute
*attr, char *buf)
*/
len += sysfs_emit_at(buf, len, "%s\t%llu\t%llu\t%llu\n",
v3d_queue_to_string(queue),
-timestamp,
-stats->jobs_completed,
-stats->enabled_ns + active_runtime);
+timestamp, jobs_completed, active_runtime);
}
return len;
--
2.44.0
