A CPU job is a type of job that performs operations that requires CPU
intervention. A reset performance query job is a job that resets the
performance queries by resetting the values of the perfmons. Moreover,
we also reset the syncobjs related to the availability of the query.
So, create a user extension for the CPU job that enables the creation
of a reset performance job. This user extension will allow the creation of
a CPU job that resets the perfmons values and resets the availability syncobj.
Signed-off-by: Maíra Canal <mcanal@xxxxxxxxxx>
---
drivers/gpu/drm/v3d/v3d_drv.h | 31 ++++++++++++++
drivers/gpu/drm/v3d/v3d_sched.c | 36 ++++++++++++++++
drivers/gpu/drm/v3d/v3d_submit.c | 73 ++++++++++++++++++++++++++++++++
include/uapi/drm/v3d_drm.h | 27 ++++++++++++
4 files changed, 167 insertions(+)
diff --git a/drivers/gpu/drm/v3d/v3d_drv.h b/drivers/gpu/drm/v3d/v3d_drv.h
index 0cb629b116f1..0da88dcea01a 100644
--- a/drivers/gpu/drm/v3d/v3d_drv.h
+++ b/drivers/gpu/drm/v3d/v3d_drv.h
@@ -241,6 +241,9 @@ struct v3d_job {
*/
struct v3d_perfmon *perfmon;
+ /* File descriptor of the process that submitted the job */
+ struct drm_file *file;
+
/* Callback for the freeing of the job on refcount going to 0. */
void (*free)(struct kref *ref);
};
@@ -293,6 +296,7 @@ enum v3d_cpu_job_type {
V3D_CPU_JOB_TYPE_TIMESTAMP_QUERY,
V3D_CPU_JOB_TYPE_RESET_TIMESTAMP_QUERY,
V3D_CPU_JOB_TYPE_COPY_TIMESTAMP_QUERY,
+ V3D_CPU_JOB_TYPE_RESET_PERFORMANCE_QUERY,
};
struct v3d_timestamp_query {
@@ -303,6 +307,18 @@ struct v3d_timestamp_query {
struct drm_syncobj *syncobj;
};
+/* Number of perfmons required to handle all supported performance counters */
+#define V3D_MAX_PERFMONS DIV_ROUND_UP(V3D_PERFCNT_NUM, \
+ DRM_V3D_MAX_PERF_COUNTERS)
+
+struct v3d_performance_query {
+ /* Performance monitor IDs for this query */
+ u32 kperfmon_ids[V3D_MAX_PERFMONS];
+
+ /* Syncobj that indicates the query availability */
+ struct drm_syncobj *syncobj;
+};
+
struct v3d_indirect_csd_info {
/* Indirect CSD */
struct v3d_csd_job *job;
@@ -334,6 +350,19 @@ struct v3d_timestamp_query_info {
u32 count;
};
+struct v3d_performance_query_info {
+ struct v3d_performance_query *queries;
+
+ /* Number of performance queries */
+ u32 count;
+
+ /* Number of performance monitors related to that query pool */
+ u32 nperfmons;
+
+ /* Number of performance counters related to that query pool */
+ u32 ncounters;
+};
+
struct v3d_copy_query_results_info {
/* Define if should write to buffer using 64 or 32 bits */
bool do_64bit;
@@ -361,6 +390,8 @@ struct v3d_cpu_job {
struct v3d_timestamp_query_info timestamp_query;
struct v3d_copy_query_results_info copy;
+
+ struct v3d_performance_query_info performance_query;
};
struct v3d_submit_outsync {
diff --git a/drivers/gpu/drm/v3d/v3d_sched.c b/drivers/gpu/drm/v3d/v3d_sched.c
index b3664fb5aeef..b1964bc75d02 100644
--- a/drivers/gpu/drm/v3d/v3d_sched.c
+++ b/drivers/gpu/drm/v3d/v3d_sched.c
@@ -76,6 +76,7 @@ v3d_cpu_job_free(struct drm_sched_job *sched_job)
{
struct v3d_cpu_job *job = to_cpu_job(sched_job);
struct v3d_timestamp_query_info *timestamp_query = &job->timestamp_query;
+ struct v3d_performance_query_info *performance_query = &job->performance_query;
if (timestamp_query->queries) {
for (int i = 0; i < timestamp_query->count; i++)
@@ -83,6 +84,12 @@ v3d_cpu_job_free(struct drm_sched_job *sched_job)
kvfree(timestamp_query->queries);
}
+ if (performance_query->queries) {
+ for (int i = 0; i < performance_query->count; i++)
+ drm_syncobj_put(performance_query->queries[i].syncobj);
+ kvfree(performance_query->queries);
+ }
+
v3d_job_cleanup(&job->base);
}
@@ -393,6 +400,34 @@ v3d_copy_query_results(struct v3d_cpu_job *job)
v3d_put_bo_vaddr(bo);
}
+static void
+v3d_reset_performance_queries(struct v3d_cpu_job *job)
+{
+ struct v3d_performance_query_info *performance_query = &job->performance_query;
+ struct v3d_file_priv *v3d_priv = job->base.file->driver_priv;
+ struct v3d_dev *v3d = job->base.v3d;
+ struct v3d_perfmon *perfmon;
+
+ for (int i = 0; i < performance_query->count; i++) {
+ for (int j = 0; j < performance_query->nperfmons; j++) {
+ perfmon = v3d_perfmon_find(v3d_priv,
+ performance_query->queries[i].kperfmon_ids[j]);
+ if (!perfmon) {
+ DRM_DEBUG("Failed to find perfmon.");
+ continue;
+ }
+
+ v3d_perfmon_stop(v3d, perfmon, false);
+
+ memset(perfmon->values, 0, perfmon->ncounters * sizeof(u64));
+
+ v3d_perfmon_put(perfmon);
+ }
+
+ drm_syncobj_replace_fence(performance_query->queries[i].syncobj, NULL);
+ }
+}
+
static struct dma_fence *
v3d_cpu_job_run(struct drm_sched_job *sched_job)
{
@@ -404,6 +439,7 @@ v3d_cpu_job_run(struct drm_sched_job *sched_job)
[V3D_CPU_JOB_TYPE_TIMESTAMP_QUERY] = v3d_timestamp_query,
[V3D_CPU_JOB_TYPE_RESET_TIMESTAMP_QUERY] = v3d_reset_timestamp_queries,
[V3D_CPU_JOB_TYPE_COPY_TIMESTAMP_QUERY] = v3d_copy_query_results,
+ [V3D_CPU_JOB_TYPE_RESET_PERFORMANCE_QUERY] = v3d_reset_performance_queries,
};
v3d->cpu_job = job;
diff --git a/drivers/gpu/drm/v3d/v3d_submit.c b/drivers/gpu/drm/v3d/v3d_submit.c
index 9a41e8044011..fb4c68352f4f 100644
--- a/drivers/gpu/drm/v3d/v3d_submit.c
+++ b/drivers/gpu/drm/v3d/v3d_submit.c
@@ -167,6 +167,7 @@ v3d_job_init(struct v3d_dev *v3d, struct drm_file *file_priv,
job = *container;
job->v3d = v3d;
job->free = free;
+ job->file = file_priv;
ret = drm_sched_job_init(&job->base, &v3d_priv->sched_entity[queue],
v3d_priv);
@@ -608,6 +609,74 @@ v3d_get_cpu_copy_query_results_params(struct drm_file *file_priv,
return 0;
}
+static int
+v3d_get_cpu_reset_performance_params(struct drm_file *file_priv,
+ struct drm_v3d_extension __user *ext,
+ struct v3d_cpu_job *job)
+{
+ u32 __user *syncs;
+ u64 __user *kperfmon_ids;
+ struct drm_v3d_reset_performance_query reset;
+
+ if (!job) {
+ DRM_DEBUG("CPU job extension was attached to a GPU job.\n");
+ return -EINVAL;
+ }
+
+ if (job->job_type) {
+ DRM_DEBUG("Two CPU job extensions were added to the same CPU job.\n");
+ return -EINVAL;
+ }
+
+ if (copy_from_user(&reset, ext, sizeof(reset)))
+ return -EFAULT;
+
+ job->job_type = V3D_CPU_JOB_TYPE_RESET_PERFORMANCE_QUERY;
+
+ job->performance_query.queries = kvmalloc_array(reset.count,
+ sizeof(struct v3d_performance_query),
+ GFP_KERNEL);
+ if (!job->performance_query.queries)
+ return -ENOMEM;
+
+ syncs = u64_to_user_ptr(reset.syncs);
+ kperfmon_ids = u64_to_user_ptr(reset.kperfmon_ids);
+
+ for (int i = 0; i < reset.count; i++) {
+ u32 sync;
+ u64 ids;
+ u32 __user *ids_pointer;
+ u32 id;
+
+ if (copy_from_user(&sync, syncs++, sizeof(sync))) {
+ kvfree(job->performance_query.queries);
+ return -EFAULT;
+ }
+
+ job->performance_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync);
+
+ if (copy_from_user(&ids, kperfmon_ids++, sizeof(ids))) {
+ kvfree(job->performance_query.queries);
+ return -EFAULT;
+ }
+
+ ids_pointer = u64_to_user_ptr(ids);
+
+ for (int j = 0; j < reset.nperfmons; j++) {
+ if (copy_from_user(&id, ids_pointer++, sizeof(id))) {
+ kvfree(job->performance_query.queries);
+ return -EFAULT;
+ }
+
+ job->performance_query.queries[i].kperfmon_ids[j] = id;
+ }
+ }
+ job->performance_query.count = reset.count;
+ job->performance_query.nperfmons = reset.nperfmons;
+
+ return 0;
+}
+
/* Whenever userspace sets ioctl extensions, v3d_get_extensions parses data
* according to the extension id (name).
*/
@@ -645,6 +714,9 @@ v3d_get_extensions(struct drm_file *file_priv,
case DRM_V3D_EXT_ID_CPU_COPY_TIMESTAMP_QUERY:
ret = v3d_get_cpu_copy_query_results_params(file_priv, user_ext, job);
break;
+ case DRM_V3D_EXT_ID_CPU_RESET_PERFORMANCE_QUERY:
+ ret = v3d_get_cpu_reset_performance_params(file_priv, user_ext, job);
+ break;
default:
DRM_DEBUG_DRIVER("Unknown extension id: %d\n", ext.id);
return -EINVAL;
@@ -1134,6 +1206,7 @@ v3d_submit_cpu_ioctl(struct drm_device *dev, void *data,
v3d_job_cleanup(clean_job);
v3d_put_multisync_post_deps(&se);
kvfree(cpu_job->timestamp_query.queries);
+ kvfree(cpu_job->performance_query.queries);
return ret;
}
diff --git a/include/uapi/drm/v3d_drm.h b/include/uapi/drm/v3d_drm.h
index c6b5a2549302..6d5303413758 100644
--- a/include/uapi/drm/v3d_drm.h
+++ b/include/uapi/drm/v3d_drm.h
@@ -76,6 +76,7 @@ struct drm_v3d_extension {
#define DRM_V3D_EXT_ID_CPU_TIMESTAMP_QUERY 0x03
#define DRM_V3D_EXT_ID_CPU_RESET_TIMESTAMP_QUERY 0x04
#define DRM_V3D_EXT_ID_CPU_COPY_TIMESTAMP_QUERY 0x05
+#define DRM_V3D_EXT_ID_CPU_RESET_PERFORMANCE_QUERY 0x06
__u32 flags; /* mbz */
};
@@ -487,6 +488,32 @@ struct drm_v3d_copy_timestamp_query {
__u64 syncs;
};
+/**
+ * struct drm_v3d_reset_performance_query - ioctl extension for the CPU job to
+ * reset performance queries
+ *
+ * When an extension DRM_V3D_EXT_ID_CPU_RESET_PERFORMANCE_QUERY is defined, it
+ * points to this extension to define a reset performance submission. This CPU
+ * job will reset the performance queries by resetting the values of the
+ * performance monitors. Moreover, it will reset the syncobj to reset query
+ * availability.
+ */
+struct drm_v3d_reset_performance_query {
+ struct drm_v3d_extension base;
+
+ /* Array of performance queries's syncobjs to indicate its availability */
+ __u64 syncs;
+
+ /* Number of queries */
+ __u32 count;
+
+ /* Number of performance monitors */
+ __u32 nperfmons;
+
+ /* Array of u64 user-pointers that point to an array of kperfmon_ids */
+ __u64 kperfmon_ids;
+};
+
struct drm_v3d_submit_cpu {
/* Pointer to a u32 array of the BOs that are referenced by the job. */
__u64 bo_handles;
--
2.41.0
