cregit-Linux how code gets into the kernel

Release 4.17 drivers/gpu/drm/i915/selftests/lib_sw_fence.c

/*
 * Copyright © 2017 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 *
 */

#include "lib_sw_fence.h"

/* Small library of different fence types useful for writing tests */


static int __i915_sw_fence_call nop_fence_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state) { return NOTIFY_DONE; }

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Chris Wilson19100.00%1100.00%
Total19100.00%1100.00%


void __onstack_fence_init(struct i915_sw_fence *fence, const char *name, struct lock_class_key *key) { debug_fence_init_onstack(fence); __init_waitqueue_head(&fence->wait, name, key); atomic_set(&fence->pending, 1); fence->flags = (unsigned long)nop_fence_notify; }

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PersonTokensPropCommitsCommitProp
Chris Wilson57100.00%1100.00%
Total57100.00%1100.00%


void onstack_fence_fini(struct i915_sw_fence *fence) { i915_sw_fence_commit(fence); i915_sw_fence_fini(fence); }

Contributors

PersonTokensPropCommitsCommitProp
Chris Wilson20100.00%1100.00%
Total20100.00%1100.00%


static void timed_fence_wake(struct timer_list *t) { struct timed_fence *tf = from_timer(tf, t, timer); i915_sw_fence_commit(&tf->fence); }

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PersonTokensPropCommitsCommitProp
Chris Wilson2163.64%150.00%
Kees Cook1236.36%150.00%
Total33100.00%2100.00%


void timed_fence_init(struct timed_fence *tf, unsigned long expires) { onstack_fence_init(&tf->fence); timer_setup_on_stack(&tf->timer, timed_fence_wake, 0); if (time_after(expires, jiffies)) mod_timer(&tf->timer, expires); else i915_sw_fence_commit(&tf->fence); }

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PersonTokensPropCommitsCommitProp
Chris Wilson6096.77%150.00%
Kees Cook23.23%150.00%
Total62100.00%2100.00%


void timed_fence_fini(struct timed_fence *tf) { if (del_timer_sync(&tf->timer)) i915_sw_fence_commit(&tf->fence); destroy_timer_on_stack(&tf->timer); i915_sw_fence_fini(&tf->fence); }

Contributors

PersonTokensPropCommitsCommitProp
Chris Wilson44100.00%1100.00%
Total44100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Chris Wilson22694.17%150.00%
Kees Cook145.83%150.00%
Total240100.00%2100.00%
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