cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/core/event.c

/*
 * Copyright 2013-2014 Red Hat Inc.
 *
 * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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 <core/event.h>
#include <core/notify.h>


void nvkm_event_put(struct nvkm_event *event, u32 types, int index) { assert_spin_locked(&event->refs_lock); while (types) { int type = __ffs(types); types &= ~(1 << type); if (--event->refs[index * event->types_nr + type] == 0) { if (event->func->fini) event->func->fini(event, 1 << type, index); } } }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs8998.89%583.33%
Bruno Prémont11.11%116.67%
Total90100.00%6100.00%


void nvkm_event_get(struct nvkm_event *event, u32 types, int index) { assert_spin_locked(&event->refs_lock); while (types) { int type = __ffs(types); types &= ~(1 << type); if (++event->refs[index * event->types_nr + type] == 1) { if (event->func->init) event->func->init(event, 1 << type, index); } } }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs8998.89%266.67%
Bruno Prémont11.11%133.33%
Total90100.00%3100.00%


void nvkm_event_send(struct nvkm_event *event, u32 types, int index, void *data, u32 size) { struct nvkm_notify *notify; unsigned long flags; if (!event->refs || WARN_ON(index >= event->index_nr)) return; spin_lock_irqsave(&event->list_lock, flags); list_for_each_entry(notify, &event->list, head) { if (notify->index == index && (notify->types & types)) { if (event->func->send) { event->func->send(data, size, notify); continue; } nvkm_notify_send(notify, data, size); } } spin_unlock_irqrestore(&event->list_lock, flags); }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs130100.00%5100.00%
Total130100.00%5100.00%


void nvkm_event_fini(struct nvkm_event *event) { if (event->refs) { kfree(event->refs); event->refs = NULL; } }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs31100.00%2100.00%
Total31100.00%2100.00%


int nvkm_event_init(const struct nvkm_event_func *func, int types_nr, int index_nr, struct nvkm_event *event) { event->refs = kzalloc(sizeof(*event->refs) * index_nr * types_nr, GFP_KERNEL); if (!event->refs) return -ENOMEM; event->func = func; event->types_nr = types_nr; event->index_nr = index_nr; spin_lock_init(&event->refs_lock); spin_lock_init(&event->list_lock); INIT_LIST_HEAD(&event->list); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs99100.00%4100.00%
Total99100.00%4100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs44599.55%685.71%
Bruno Prémont20.45%114.29%
Total447100.00%7100.00%
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