diff mbox series

[v3,1/5] drm/v3d: Create two functions to update all GPU stats variables

Message ID 20240420213632.339941-3-mcanal@igalia.com (mailing list archive)
State New, archived
Headers show
Series drm/v3d: Fix GPU stats inconsistencies and race-condition | expand

Commit Message

Maíra Canal April 20, 2024, 9:32 p.m. UTC 
Currently, we manually perform all operations to update the GPU stats
variables. Apart from the code repetition, this is very prone to errors,
as we can see on commit 35f4f8c9fc97 ("drm/v3d: Don't increment
`enabled_ns` twice").

Therefore, create two functions to manage updating all GPU stats
variables. Now, the jobs only need to call for `v3d_job_update_stats()`
when the job is done and `v3d_job_start_stats()` when starting the job.

Co-developed-by: Tvrtko Ursulin <tursulin@igalia.com>
Signed-off-by: Tvrtko Ursulin <tursulin@igalia.com>
Signed-off-by: Maíra Canal <mcanal@igalia.com>
Reviewed-by: Jose Maria Casanova Crespo <jmcasanova@igalia.com>
---
 drivers/gpu/drm/v3d/v3d_drv.h   |  1 +
 drivers/gpu/drm/v3d/v3d_irq.c   | 48 ++------------------
 drivers/gpu/drm/v3d/v3d_sched.c | 80 +++++++++++++++------------------
 3 files changed, 40 insertions(+), 89 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/v3d/v3d_drv.h b/drivers/gpu/drm/v3d/v3d_drv.h
index 1950c723dde1..ee3545226d7f 100644
--- a/drivers/gpu/drm/v3d/v3d_drv.h
+++ b/drivers/gpu/drm/v3d/v3d_drv.h
@@ -543,6 +543,7 @@  void v3d_mmu_insert_ptes(struct v3d_bo *bo);
 void v3d_mmu_remove_ptes(struct v3d_bo *bo);
 
 /* v3d_sched.c */
+void v3d_job_update_stats(struct v3d_job *job, enum v3d_queue queue);
 int v3d_sched_init(struct v3d_dev *v3d);
 void v3d_sched_fini(struct v3d_dev *v3d);
 
diff --git a/drivers/gpu/drm/v3d/v3d_irq.c b/drivers/gpu/drm/v3d/v3d_irq.c
index ce6b2fb341d1..d469bda52c1a 100644
--- a/drivers/gpu/drm/v3d/v3d_irq.c
+++ b/drivers/gpu/drm/v3d/v3d_irq.c
@@ -102,18 +102,8 @@  v3d_irq(int irq, void *arg)
 	if (intsts & V3D_INT_FLDONE) {
 		struct v3d_fence *fence =
 			to_v3d_fence(v3d->bin_job->base.irq_fence);
-		struct v3d_file_priv *file = v3d->bin_job->base.file->driver_priv;
-		u64 runtime = local_clock() - file->start_ns[V3D_BIN];
-
-		file->jobs_sent[V3D_BIN]++;
-		v3d->queue[V3D_BIN].jobs_sent++;
-
-		file->start_ns[V3D_BIN] = 0;
-		v3d->queue[V3D_BIN].start_ns = 0;
-
-		file->enabled_ns[V3D_BIN] += runtime;
-		v3d->queue[V3D_BIN].enabled_ns += runtime;
 
+		v3d_job_update_stats(&v3d->bin_job->base, V3D_BIN);
 		trace_v3d_bcl_irq(&v3d->drm, fence->seqno);
 		dma_fence_signal(&fence->base);
 		status = IRQ_HANDLED;
@@ -122,18 +112,8 @@  v3d_irq(int irq, void *arg)
 	if (intsts & V3D_INT_FRDONE) {
 		struct v3d_fence *fence =
 			to_v3d_fence(v3d->render_job->base.irq_fence);
-		struct v3d_file_priv *file = v3d->render_job->base.file->driver_priv;
-		u64 runtime = local_clock() - file->start_ns[V3D_RENDER];
-
-		file->jobs_sent[V3D_RENDER]++;
-		v3d->queue[V3D_RENDER].jobs_sent++;
-
-		file->start_ns[V3D_RENDER] = 0;
-		v3d->queue[V3D_RENDER].start_ns = 0;
-
-		file->enabled_ns[V3D_RENDER] += runtime;
-		v3d->queue[V3D_RENDER].enabled_ns += runtime;
 
+		v3d_job_update_stats(&v3d->render_job->base, V3D_RENDER);
 		trace_v3d_rcl_irq(&v3d->drm, fence->seqno);
 		dma_fence_signal(&fence->base);
 		status = IRQ_HANDLED;
@@ -142,18 +122,8 @@  v3d_irq(int irq, void *arg)
 	if (intsts & V3D_INT_CSDDONE(v3d->ver)) {
 		struct v3d_fence *fence =
 			to_v3d_fence(v3d->csd_job->base.irq_fence);
-		struct v3d_file_priv *file = v3d->csd_job->base.file->driver_priv;
-		u64 runtime = local_clock() - file->start_ns[V3D_CSD];
-
-		file->jobs_sent[V3D_CSD]++;
-		v3d->queue[V3D_CSD].jobs_sent++;
-
-		file->start_ns[V3D_CSD] = 0;
-		v3d->queue[V3D_CSD].start_ns = 0;
-
-		file->enabled_ns[V3D_CSD] += runtime;
-		v3d->queue[V3D_CSD].enabled_ns += runtime;
 
+		v3d_job_update_stats(&v3d->csd_job->base, V3D_CSD);
 		trace_v3d_csd_irq(&v3d->drm, fence->seqno);
 		dma_fence_signal(&fence->base);
 		status = IRQ_HANDLED;
@@ -189,18 +159,8 @@  v3d_hub_irq(int irq, void *arg)
 	if (intsts & V3D_HUB_INT_TFUC) {
 		struct v3d_fence *fence =
 			to_v3d_fence(v3d->tfu_job->base.irq_fence);
-		struct v3d_file_priv *file = v3d->tfu_job->base.file->driver_priv;
-		u64 runtime = local_clock() - file->start_ns[V3D_TFU];
-
-		file->jobs_sent[V3D_TFU]++;
-		v3d->queue[V3D_TFU].jobs_sent++;
-
-		file->start_ns[V3D_TFU] = 0;
-		v3d->queue[V3D_TFU].start_ns = 0;
-
-		file->enabled_ns[V3D_TFU] += runtime;
-		v3d->queue[V3D_TFU].enabled_ns += runtime;
 
+		v3d_job_update_stats(&v3d->tfu_job->base, V3D_TFU);
 		trace_v3d_tfu_irq(&v3d->drm, fence->seqno);
 		dma_fence_signal(&fence->base);
 		status = IRQ_HANDLED;
diff --git a/drivers/gpu/drm/v3d/v3d_sched.c b/drivers/gpu/drm/v3d/v3d_sched.c
index 54015ad765c7..8ca61bcd4b1c 100644
--- a/drivers/gpu/drm/v3d/v3d_sched.c
+++ b/drivers/gpu/drm/v3d/v3d_sched.c
@@ -105,11 +105,37 @@  v3d_switch_perfmon(struct v3d_dev *v3d, struct v3d_job *job)
 		v3d_perfmon_start(v3d, job->perfmon);
 }
 
+static void
+v3d_job_start_stats(struct v3d_job *job, enum v3d_queue queue)
+{
+	struct v3d_dev *v3d = job->v3d;
+	struct v3d_file_priv *file = job->file->driver_priv;
+	u64 now = local_clock();
+
+	file->start_ns[queue] = now;
+	v3d->queue[queue].start_ns = now;
+}
+
+void
+v3d_job_update_stats(struct v3d_job *job, enum v3d_queue queue)
+{
+	struct v3d_dev *v3d = job->v3d;
+	struct v3d_file_priv *file = job->file->driver_priv;
+	u64 now = local_clock();
+
+	file->enabled_ns[queue] += now - file->start_ns[queue];
+	file->jobs_sent[queue]++;
+	file->start_ns[queue] = 0;
+
+	v3d->queue[queue].enabled_ns += now - v3d->queue[queue].start_ns;
+	v3d->queue[queue].jobs_sent++;
+	v3d->queue[queue].start_ns = 0;
+}
+
 static struct dma_fence *v3d_bin_job_run(struct drm_sched_job *sched_job)
 {
 	struct v3d_bin_job *job = to_bin_job(sched_job);
 	struct v3d_dev *v3d = job->base.v3d;
-	struct v3d_file_priv *file = job->base.file->driver_priv;
 	struct drm_device *dev = &v3d->drm;
 	struct dma_fence *fence;
 	unsigned long irqflags;
@@ -141,9 +167,7 @@  static struct dma_fence *v3d_bin_job_run(struct drm_sched_job *sched_job)
 	trace_v3d_submit_cl(dev, false, to_v3d_fence(fence)->seqno,
 			    job->start, job->end);
 
-	file->start_ns[V3D_BIN] = local_clock();
-	v3d->queue[V3D_BIN].start_ns = file->start_ns[V3D_BIN];
-
+	v3d_job_start_stats(&job->base, V3D_BIN);
 	v3d_switch_perfmon(v3d, &job->base);
 
 	/* Set the current and end address of the control list.
@@ -168,7 +192,6 @@  static struct dma_fence *v3d_render_job_run(struct drm_sched_job *sched_job)
 {
 	struct v3d_render_job *job = to_render_job(sched_job);
 	struct v3d_dev *v3d = job->base.v3d;
-	struct v3d_file_priv *file = job->base.file->driver_priv;
 	struct drm_device *dev = &v3d->drm;
 	struct dma_fence *fence;
 
@@ -196,9 +219,7 @@  static struct dma_fence *v3d_render_job_run(struct drm_sched_job *sched_job)
 	trace_v3d_submit_cl(dev, true, to_v3d_fence(fence)->seqno,
 			    job->start, job->end);
 
-	file->start_ns[V3D_RENDER] = local_clock();
-	v3d->queue[V3D_RENDER].start_ns = file->start_ns[V3D_RENDER];
-
+	v3d_job_start_stats(&job->base, V3D_RENDER);
 	v3d_switch_perfmon(v3d, &job->base);
 
 	/* XXX: Set the QCFG */
@@ -217,7 +238,6 @@  v3d_tfu_job_run(struct drm_sched_job *sched_job)
 {
 	struct v3d_tfu_job *job = to_tfu_job(sched_job);
 	struct v3d_dev *v3d = job->base.v3d;
-	struct v3d_file_priv *file = job->base.file->driver_priv;
 	struct drm_device *dev = &v3d->drm;
 	struct dma_fence *fence;
 
@@ -232,8 +252,7 @@  v3d_tfu_job_run(struct drm_sched_job *sched_job)
 
 	trace_v3d_submit_tfu(dev, to_v3d_fence(fence)->seqno);
 
-	file->start_ns[V3D_TFU] = local_clock();
-	v3d->queue[V3D_TFU].start_ns = file->start_ns[V3D_TFU];
+	v3d_job_start_stats(&job->base, V3D_TFU);
 
 	V3D_WRITE(V3D_TFU_IIA(v3d->ver), job->args.iia);
 	V3D_WRITE(V3D_TFU_IIS(v3d->ver), job->args.iis);
@@ -260,7 +279,6 @@  v3d_csd_job_run(struct drm_sched_job *sched_job)
 {
 	struct v3d_csd_job *job = to_csd_job(sched_job);
 	struct v3d_dev *v3d = job->base.v3d;
-	struct v3d_file_priv *file = job->base.file->driver_priv;
 	struct drm_device *dev = &v3d->drm;
 	struct dma_fence *fence;
 	int i, csd_cfg0_reg, csd_cfg_reg_count;
@@ -279,9 +297,7 @@  v3d_csd_job_run(struct drm_sched_job *sched_job)
 
 	trace_v3d_submit_csd(dev, to_v3d_fence(fence)->seqno);
 
-	file->start_ns[V3D_CSD] = local_clock();
-	v3d->queue[V3D_CSD].start_ns = file->start_ns[V3D_CSD];
-
+	v3d_job_start_stats(&job->base, V3D_CSD);
 	v3d_switch_perfmon(v3d, &job->base);
 
 	csd_cfg0_reg = V3D_CSD_QUEUED_CFG0(v3d->ver);
@@ -530,8 +546,6 @@  v3d_cpu_job_run(struct drm_sched_job *sched_job)
 {
 	struct v3d_cpu_job *job = to_cpu_job(sched_job);
 	struct v3d_dev *v3d = job->base.v3d;
-	struct v3d_file_priv *file = job->base.file->driver_priv;
-	u64 runtime;
 
 	v3d->cpu_job = job;
 
@@ -540,25 +554,13 @@  v3d_cpu_job_run(struct drm_sched_job *sched_job)
 		return NULL;
 	}
 
-	file->start_ns[V3D_CPU] = local_clock();
-	v3d->queue[V3D_CPU].start_ns = file->start_ns[V3D_CPU];
-
+	v3d_job_start_stats(&job->base, V3D_CPU);
 	trace_v3d_cpu_job_begin(&v3d->drm, job->job_type);
 
 	cpu_job_function[job->job_type](job);
 
 	trace_v3d_cpu_job_end(&v3d->drm, job->job_type);
-
-	runtime = local_clock() - file->start_ns[V3D_CPU];
-
-	file->enabled_ns[V3D_CPU] += runtime;
-	v3d->queue[V3D_CPU].enabled_ns += runtime;
-
-	file->jobs_sent[V3D_CPU]++;
-	v3d->queue[V3D_CPU].jobs_sent++;
-
-	file->start_ns[V3D_CPU] = 0;
-	v3d->queue[V3D_CPU].start_ns = 0;
+	v3d_job_update_stats(&job->base, V3D_CPU);
 
 	return NULL;
 }
@@ -568,24 +570,12 @@  v3d_cache_clean_job_run(struct drm_sched_job *sched_job)
 {
 	struct v3d_job *job = to_v3d_job(sched_job);
 	struct v3d_dev *v3d = job->v3d;
-	struct v3d_file_priv *file = job->file->driver_priv;
-	u64 runtime;
 
-	file->start_ns[V3D_CACHE_CLEAN] = local_clock();
-	v3d->queue[V3D_CACHE_CLEAN].start_ns = file->start_ns[V3D_CACHE_CLEAN];
+	v3d_job_start_stats(job, V3D_CACHE_CLEAN);
 
 	v3d_clean_caches(v3d);
 
-	runtime = local_clock() - file->start_ns[V3D_CACHE_CLEAN];
-
-	file->enabled_ns[V3D_CACHE_CLEAN] += runtime;
-	v3d->queue[V3D_CACHE_CLEAN].enabled_ns += runtime;
-
-	file->jobs_sent[V3D_CACHE_CLEAN]++;
-	v3d->queue[V3D_CACHE_CLEAN].jobs_sent++;
-
-	file->start_ns[V3D_CACHE_CLEAN] = 0;
-	v3d->queue[V3D_CACHE_CLEAN].start_ns = 0;
+	v3d_job_update_stats(job, V3D_CACHE_CLEAN);
 
 	return NULL;
 }