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From: Jason Ekstrand <jason@jlekstrand.net>
To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>,
	Jason Ekstrand <jason@jlekstrand.net>
Subject: [PATCH 18/25] drm/i915/gem: Return an error ptr from context_lookup
Date: Thu, 29 Apr 2021 14:03:33 -0500	[thread overview]
Message-ID: <20210429190340.1555632-19-jason@jlekstrand.net> (raw)
In-Reply-To: <20210429190340.1555632-1-jason@jlekstrand.net>

We're about to start doing lazy context creation which means contexts
get created in i915_gem_context_lookup and we may start having more
errors than -ENOENT.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 drivers/gpu/drm/i915/gem/i915_gem_context.c    | 12 ++++++------
 drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c |  4 ++--
 drivers/gpu/drm/i915/i915_drv.h                |  2 +-
 drivers/gpu/drm/i915/i915_perf.c               |  4 ++--
 4 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index 189ab7e5a6fee..f1cfeab7c9346 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -2546,8 +2546,8 @@ int i915_gem_context_getparam_ioctl(struct drm_device *dev, void *data,
 	int ret = 0;
 
 	ctx = i915_gem_context_lookup(file_priv, args->ctx_id);
-	if (!ctx)
-		return -ENOENT;
+	if (IS_ERR(ctx))
+		return PTR_ERR(ctx);
 
 	switch (args->param) {
 	case I915_CONTEXT_PARAM_GTT_SIZE:
@@ -2615,8 +2615,8 @@ int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data,
 	int ret;
 
 	ctx = i915_gem_context_lookup(file_priv, args->ctx_id);
-	if (!ctx)
-		return -ENOENT;
+	if (IS_ERR(ctx))
+		return PTR_ERR(ctx);
 
 	ret = ctx_setparam(file_priv, ctx, args);
 
@@ -2635,8 +2635,8 @@ int i915_gem_context_reset_stats_ioctl(struct drm_device *dev,
 		return -EINVAL;
 
 	ctx = i915_gem_context_lookup(file->driver_priv, args->ctx_id);
-	if (!ctx)
-		return -ENOENT;
+	if (IS_ERR(ctx))
+		return PTR_ERR(ctx);
 
 	/*
 	 * We opt for unserialised reads here. This may result in tearing
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
index 7024adcd5cf15..de14b26f3b2d5 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
@@ -739,8 +739,8 @@ static int eb_select_context(struct i915_execbuffer *eb)
 	struct i915_gem_context *ctx;
 
 	ctx = i915_gem_context_lookup(eb->file->driver_priv, eb->args->rsvd1);
-	if (unlikely(!ctx))
-		return -ENOENT;
+	if (unlikely(IS_ERR(ctx)))
+		return PTR_ERR(ctx);
 
 	eb->gem_context = ctx;
 	if (rcu_access_pointer(ctx->vm))
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 8571c5c1509a7..004ed0e59c999 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1851,7 +1851,7 @@ i915_gem_context_lookup(struct drm_i915_file_private *file_priv, u32 id)
 		ctx = NULL;
 	rcu_read_unlock();
 
-	return ctx;
+	return ctx ? ctx : ERR_PTR(-ENOENT);
 }
 
 /* i915_gem_evict.c */
diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index 85ad62dbabfab..b86ed03f6a705 100644
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -3414,10 +3414,10 @@ i915_perf_open_ioctl_locked(struct i915_perf *perf,
 		struct drm_i915_file_private *file_priv = file->driver_priv;
 
 		specific_ctx = i915_gem_context_lookup(file_priv, ctx_handle);
-		if (!specific_ctx) {
+		if (IS_ERR(specific_ctx)) {
 			DRM_DEBUG("Failed to look up context with ID %u for opening perf stream\n",
 				  ctx_handle);
-			ret = -ENOENT;
+			ret = PTR_ERR(specific_ctx);
 			goto err;
 		}
 	}
-- 
2.31.1

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  parent reply	other threads:[~2021-04-29 19:04 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-29 19:03 [PATCH 00/25] drm/i915/gem: ioctl clean-ups (v4) Jason Ekstrand
2021-04-29 19:03 ` [PATCH 01/25] drm/i915: Drop I915_CONTEXT_PARAM_RINGSIZE Jason Ekstrand
2021-04-29 19:03 ` [PATCH 02/25] drm/i915: Stop storing the ring size in the ring pointer Jason Ekstrand
2021-04-29 19:03 ` [PATCH 03/25] drm/i915: Drop I915_CONTEXT_PARAM_NO_ZEROMAP Jason Ekstrand
2021-04-29 19:03 ` [PATCH 04/25] drm/i915/gem: Set the watchdog timeout directly in intel_context_set_gem (v2) Jason Ekstrand
2021-04-29 19:03 ` [PATCH 05/25] drm/i915/gem: Return void from context_apply_all Jason Ekstrand
2021-04-29 19:03 ` [PATCH 06/25] drm/i915: Drop the CONTEXT_CLONE API Jason Ekstrand
2021-04-29 19:03 ` [PATCH 07/25] drm/i915: Implement SINGLE_TIMELINE with a syncobj (v4) Jason Ekstrand
2021-04-29 19:03 ` [PATCH 08/25] drm/i915: Drop getparam support for I915_CONTEXT_PARAM_ENGINES Jason Ekstrand
2021-04-29 19:03 ` [PATCH 09/25] drm/i915/gem: Disallow bonding of virtual engines (v3) Jason Ekstrand
2021-04-29 19:03 ` [PATCH 10/25] drm/i915/gem: Remove engine auto-magic with FENCE_SUBMIT Jason Ekstrand
2021-04-29 19:03 ` [PATCH 11/25] drm/i915/request: Remove the hook from await_execution Jason Ekstrand
2021-04-29 19:03 ` [PATCH 12/25] drm/i915/gem: Disallow creating contexts with too many engines Jason Ekstrand
2021-04-29 19:03 ` [PATCH 13/25] drm/i915: Stop manually RCU banging in reset_stats_ioctl (v2) Jason Ekstrand
2021-04-29 19:03 ` [PATCH 14/25] drm/i915/gem: Add a separate validate_priority helper Jason Ekstrand
2021-04-29 19:03 ` [PATCH 15/25] drm/i915: Add gem/i915_gem_context.h to the docs Jason Ekstrand
2021-04-29 19:03 ` [PATCH 16/25] drm/i915/gem: Add an intermediate proto_context struct Jason Ekstrand
2021-04-29 19:03 ` [PATCH 17/25] drm/i915/gem: Use the proto-context to handle create parameters Jason Ekstrand
2021-04-29 19:03 ` Jason Ekstrand [this message]
2021-04-29 19:03 ` [PATCH 19/25] drm/i915/gt: Drop i915_address_space::file (v2) Jason Ekstrand
2021-04-29 19:03 ` [PATCH 20/25] drm/i915/gem: Delay context creation Jason Ekstrand
2021-04-29 19:03 ` [PATCH 21/25] drm/i915/gem: Don't allow changing the VM on running contexts Jason Ekstrand
2021-04-29 19:03 ` [PATCH 22/25] drm/i915/gem: Don't allow changing the engine set " Jason Ekstrand
2021-04-29 19:03 ` [PATCH 23/25] drm/i915/selftests: Take a VM in kernel_context() Jason Ekstrand
2021-04-29 19:03 ` [PATCH 24/25] i915/gem/selftests: Assign the VM at context creation in igt_shared_ctx_exec Jason Ekstrand
2021-04-29 19:03 ` [PATCH 25/25] drm/i915/gem: Roll all of context creation together Jason Ekstrand

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