forked from Minki/linux
0268444607
We no longer need to track the active intel_contexts within each engine, allowing us to drop a tricky mutex_lock from inside unpin (which may occur inside fs_reclaim). Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190426163336.15906-8-chris@chris-wilson.co.uk
130 lines
3.0 KiB
C
130 lines
3.0 KiB
C
/*
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* Copyright © 2016 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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*/
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#include "mock_context.h"
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#include "mock_gtt.h"
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struct i915_gem_context *
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mock_context(struct drm_i915_private *i915,
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const char *name)
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{
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struct i915_gem_context *ctx;
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struct i915_gem_engines *e;
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int ret;
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ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
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if (!ctx)
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return NULL;
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kref_init(&ctx->ref);
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INIT_LIST_HEAD(&ctx->link);
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ctx->i915 = i915;
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mutex_init(&ctx->engines_mutex);
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e = default_engines(ctx);
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if (IS_ERR(e))
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goto err_free;
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RCU_INIT_POINTER(ctx->engines, e);
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INIT_RADIX_TREE(&ctx->handles_vma, GFP_KERNEL);
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INIT_LIST_HEAD(&ctx->handles_list);
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INIT_LIST_HEAD(&ctx->hw_id_link);
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mutex_init(&ctx->mutex);
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ret = i915_gem_context_pin_hw_id(ctx);
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if (ret < 0)
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goto err_engines;
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if (name) {
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struct i915_hw_ppgtt *ppgtt;
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ctx->name = kstrdup(name, GFP_KERNEL);
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if (!ctx->name)
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goto err_put;
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ppgtt = mock_ppgtt(i915, name);
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if (!ppgtt)
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goto err_put;
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__set_ppgtt(ctx, ppgtt);
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}
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return ctx;
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err_engines:
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free_engines(rcu_access_pointer(ctx->engines));
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err_free:
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kfree(ctx);
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return NULL;
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err_put:
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i915_gem_context_set_closed(ctx);
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i915_gem_context_put(ctx);
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return NULL;
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}
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void mock_context_close(struct i915_gem_context *ctx)
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{
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context_close(ctx);
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}
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void mock_init_contexts(struct drm_i915_private *i915)
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{
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init_contexts(i915);
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}
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struct i915_gem_context *
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live_context(struct drm_i915_private *i915, struct drm_file *file)
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{
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struct i915_gem_context *ctx;
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int err;
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lockdep_assert_held(&i915->drm.struct_mutex);
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ctx = i915_gem_create_context(i915, 0);
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if (IS_ERR(ctx))
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return ctx;
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err = gem_context_register(ctx, file->driver_priv);
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if (err < 0)
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goto err_ctx;
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return ctx;
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err_ctx:
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context_close(ctx);
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return ERR_PTR(err);
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}
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struct i915_gem_context *
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kernel_context(struct drm_i915_private *i915)
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{
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return i915_gem_context_create_kernel(i915, I915_PRIORITY_NORMAL);
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}
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void kernel_context_close(struct i915_gem_context *ctx)
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{
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context_close(ctx);
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}
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