diff mbox series

[2/3] drm/etnaviv: allocate unique ID per drm_file

Message ID 20220908181013.3214205-2-l.stach@pengutronix.de (mailing list archive)
State New, archived
Headers show
Series [1/3] drm/scheduler: track GPU active time per entity | expand

Commit Message

Lucas Stach Sept. 8, 2022, 6:10 p.m. UTC 
Allows to easily track if several fd are pointing to the same
execution context due to being dup'ed.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
---
 drivers/gpu/drm/etnaviv/etnaviv_drv.c | 3 +++
 drivers/gpu/drm/etnaviv/etnaviv_drv.h | 1 +
 2 files changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
index 1d2b4fb4bcf8..b69edb40ae2a 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
@@ -49,6 +49,7 @@  static void load_gpu(struct drm_device *dev)
 static int etnaviv_open(struct drm_device *dev, struct drm_file *file)
 {
 	struct etnaviv_drm_private *priv = dev->dev_private;
+	static atomic_t ident = ATOMIC_INIT(0);
 	struct etnaviv_file_private *ctx;
 	int ret, i;
 
@@ -56,6 +57,8 @@  static int etnaviv_open(struct drm_device *dev, struct drm_file *file)
 	if (!ctx)
 		return -ENOMEM;
 
+	ctx->id = atomic_inc_return(&ident);
+
 	ctx->mmu = etnaviv_iommu_context_init(priv->mmu_global,
 					      priv->cmdbuf_suballoc);
 	if (!ctx->mmu) {
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.h b/drivers/gpu/drm/etnaviv/etnaviv_drv.h
index f32f4771dada..851b4b4ef146 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_drv.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.h
@@ -27,6 +27,7 @@  struct etnaviv_iommu_global;
 #define ETNAVIV_SOFTPIN_START_ADDRESS	SZ_4M /* must be >= SUBALLOC_SIZE */
 
 struct etnaviv_file_private {
+	int id;
 	struct etnaviv_iommu_context	*mmu;
 	struct drm_sched_entity		sched_entity[ETNA_MAX_PIPES];
 };