tree: git://people.freedesktop.org/~airlied/linux.git drm-syncobj
head: 0c2ce5924ab63ae73c49bef9cf369a5e9d50e79d
commit: 3f58246dcd0bf3579af908c8e0a7a6715d3f51e4 [4/6] drm: add initial sync object interfaces
reproduce: make htmldocs
All warnings (new ones prefixed by >>):
include/linux/init.h:1: warning: no structured comments found
kernel/sched/core.c:2085: warning: No description found for parameter 'rf'
kernel/sched/core.c:2085: warning: Excess function parameter 'cookie' description in 'try_to_wake_up_local'
include/linux/kthread.h:26: warning: Excess function parameter '...' description in 'kthread_create'
kernel/sys.c:1: warning: no structured comments found
include/linux/device.h:969: warning: No description found for parameter 'dma_ops'
drivers/dma-buf/seqno-fence.c:1: warning: no structured comments found
include/linux/iio/iio.h:597: warning: No description found for parameter 'trig_readonly'
include/linux/iio/trigger.h:151: warning: No description found for parameter 'indio_dev'
include/linux/iio/trigger.h:151: warning: No description found for parameter 'trig'
include/linux/device.h:970: warning: No description found for parameter 'dma_ops'
drivers/regulator/core.c:1467: warning: Excess function parameter 'ret' description in 'regulator_dev_lookup'
include/drm/drm_drv.h:439: warning: No description found for parameter 'open'
include/drm/drm_drv.h:439: warning: No description found for parameter 'preclose'
include/drm/drm_drv.h:439: warning: No description found for parameter 'postclose'
include/drm/drm_drv.h:439: warning: No description found for parameter 'lastclose'
include/drm/drm_drv.h:439: warning: No description found for parameter 'set_busid'
include/drm/drm_drv.h:439: warning: No description found for parameter 'irq_handler'
include/drm/drm_drv.h:439: warning: No description found for parameter 'irq_preinstall'
include/drm/drm_drv.h:439: warning: No description found for parameter 'irq_postinstall'
include/drm/drm_drv.h:439: warning: No description found for parameter 'irq_uninstall'
include/drm/drm_drv.h:439: warning: No description found for parameter 'debugfs_init'
include/drm/drm_drv.h:439: warning: No description found for parameter 'debugfs_cleanup'
include/drm/drm_drv.h:439: warning: No description found for parameter 'gem_open_object'
include/drm/drm_drv.h:439: warning: No description found for parameter 'gem_close_object'
include/drm/drm_drv.h:439: warning: No description found for parameter 'prime_handle_to_fd'
include/drm/drm_drv.h:439: warning: No description found for parameter 'prime_fd_to_handle'
include/drm/drm_drv.h:439: warning: No description found for parameter 'gem_prime_export'
include/drm/drm_drv.h:439: warning: No description found for parameter 'gem_prime_import'
include/drm/drm_drv.h:439: warning: No description found for parameter 'gem_prime_pin'
include/drm/drm_drv.h:439: warning: No description found for parameter 'gem_prime_unpin'
include/drm/drm_drv.h:439: warning: No description found for parameter 'gem_prime_res_obj'
include/drm/drm_drv.h:439: warning: No description found for parameter 'gem_prime_get_sg_table'
include/drm/drm_drv.h:439: warning: No description found for parameter 'gem_prime_import_sg_table'
include/drm/drm_drv.h:439: warning: No description found for parameter 'gem_prime_vmap'
include/drm/drm_drv.h:439: warning: No description found for parameter 'gem_prime_vunmap'
include/drm/drm_drv.h:439: warning: No description found for parameter 'gem_prime_mmap'
include/drm/drm_drv.h:439: warning: No description found for parameter 'gem_vm_ops'
include/drm/drm_drv.h:439: warning: No description found for parameter 'major'
include/drm/drm_drv.h:439: warning: No description found for parameter 'minor'
include/drm/drm_drv.h:439: warning: No description found for parameter 'patchlevel'
include/drm/drm_drv.h:439: warning: No description found for parameter 'name'
include/drm/drm_drv.h:439: warning: No description found for parameter 'desc'
include/drm/drm_drv.h:439: warning: No description found for parameter 'date'
include/drm/drm_drv.h:439: warning: No description found for parameter 'driver_features'
include/drm/drm_drv.h:439: warning: No description found for parameter 'ioctls'
include/drm/drm_drv.h:439: warning: No description found for parameter 'num_ioctls'
include/drm/drm_drv.h:439: warning: No description found for parameter 'fops'
include/drm/drm_color_mgmt.h:1: warning: no structured comments found
drivers/gpu/drm/drm_fb_cma_helper.c:557: warning: Excess function parameter 'num_crtc' description in 'drm_fbdev_cma_init'
drivers/gpu/drm/drm_fb_cma_helper.c:558: warning: Excess function parameter 'num_crtc' description in 'drm_fbdev_cma_init'
>> drivers/gpu/drm/drm_syncobj.c:75: warning: No description found for parameter 'file_private'
>> drivers/gpu/drm/drm_syncobj.c:75: warning: No description found for parameter 'handle'
>> drivers/gpu/drm/drm_syncobj.c:75: warning: No description found for parameter 'fence'
>> drivers/gpu/drm/drm_syncobj.c:75: warning: No description found for parameter 'old_fence'
drivers/gpu/drm/drm_syncobj.c:101: warning: No description found for parameter 'file_private'
drivers/gpu/drm/drm_syncobj.c:101: warning: No description found for parameter 'handle'
drivers/gpu/drm/drm_syncobj.c:101: warning: No description found for parameter 'fence'
>> drivers/gpu/drm/drm_syncobj.c:195: warning: Excess function parameter 'dev' description in 'drm_syncobj_open'
>> drivers/gpu/drm/drm_syncobj.c:220: warning: Excess function parameter 'dev' description in 'drm_syncobj_release'
drivers/gpu/drm/i915/intel_lpe_audio.c:342: warning: No description found for parameter 'pipe'
drivers/gpu/drm/i915/intel_lpe_audio.c:342: warning: No description found for parameter 'dp_output'
drivers/gpu/drm/i915/intel_lpe_audio.c:342: warning: No description found for parameter 'link_rate'
drivers/gpu/drm/i915/intel_lpe_audio.c:343: warning: No description found for parameter 'pipe'
drivers/gpu/drm/i915/intel_lpe_audio.c:343: warning: No description found for parameter 'dp_output'
drivers/gpu/drm/i915/intel_lpe_audio.c:343: warning: No description found for parameter 'link_rate'
drivers/media/dvb-core/dvb_frontend.h:677: warning: No description found for parameter 'refcount'
Documentation/core-api/assoc_array.rst:13: WARNING: Enumerated list ends without a blank line; unexpected unindent.
Documentation/doc-guide/sphinx.rst:110: ERROR: Unknown target name: "sphinx c domain".
kernel/sched/fair.c:7616: WARNING: Inline emphasis start-string without end-string.
kernel/time/timer.c:1200: ERROR: Unexpected indentation.
kernel/time/timer.c:1202: ERROR: Unexpected indentation.
kernel/time/timer.c:1203: WARNING: Block quote ends without a blank line; unexpected unindent.
include/linux/wait.h:122: WARNING: Block quote ends without a blank line; unexpected unindent.
include/linux/wait.h:125: ERROR: Unexpected indentation.
include/linux/wait.h:127: WARNING: Block quote ends without a blank line; unexpected unindent.
kernel/time/hrtimer.c:990: WARNING: Block quote ends without a blank line; unexpected unindent.
kernel/signal.c:322: WARNING: Inline literal start-string without end-string.
include/linux/iio/iio.h:219: ERROR: Unexpected indentation.
include/linux/iio/iio.h:220: WARNING: Block quote ends without a blank line; unexpected unindent.
include/linux/iio/iio.h:226: WARNING: Definition list ends without a blank line; unexpected unindent.
drivers/iio/industrialio-core.c:639: ERROR: Unknown target name: "iio_val".
drivers/iio/industrialio-core.c:646: ERROR: Unknown target name: "iio_val".
drivers/message/fusion/mptbase.c:5051: WARNING: Definition list ends without a blank line; unexpected unindent.
drivers/tty/serial/serial_core.c:1898: WARNING: Definition list ends without a blank line; unexpected unindent.
include/linux/regulator/driver.h:271: ERROR: Unknown target name: "regulator_regmap_x_voltage".
include/linux/spi/spi.h:369: ERROR: Unexpected indentation.
drivers/usb/core/message.c:478: ERROR: Unexpected indentation.
drivers/usb/core/message.c:479: WARNING: Block quote ends without a blank line; unexpected unindent.
Documentation/driver-api/usb.rst:623: ERROR: Unknown target name: "usb_type".
Documentation/driver-api/usb.rst:623: ERROR: Unknown target name: "usb_dir".
Documentation/driver-api/usb.rst:623: ERROR: Unknown target name: "usb_recip".
Documentation/driver-api/usb.rst:689: ERROR: Unknown target name: "usbdevfs_urb_type".
sound/soc/soc-core.c:2670: ERROR: Unknown target name: "snd_soc_daifmt".
sound/core/jack.c:312: ERROR: Unknown target name: "snd_jack_btn".
WARNING: dvipng command 'dvipng' cannot be run (needed for math display), check the imgmath_dvipng setting
vim +/file_private +75 drivers/gpu/drm/drm_syncobj.c
69 */
70 int drm_syncobj_swap_fences(struct drm_file *file_private,
71 uint32_t handle,
72 struct dma_fence *fence,
73 struct dma_fence **old_fence)
74 {
> 75 struct sync_file *sync_file = drm_syncobj_file_lookup(file_private, handle);
76
77 if (!sync_file)
78 return -EINVAL;
79
80 *old_fence = sync_file_replace_fence(sync_file, fence);
81 if (*old_fence)
82 return -EINVAL;
83 return 0;
84 }
85 EXPORT_SYMBOL(drm_syncobj_swap_fences);
86
87 /**
88 * drm_syncobj_replace_fence - lookup and replace fence in a sync object.
89 * @file_private - drm file private pointer.
90 * @handle - syncobj handle to lookup
91 * @fence - fence to install in sync file.
92 * Returns: 0 on success or -EINVAL on error
93 *
94 * This looks up a sync object and replaces the fence on it, freeing
95 * the old one.
96 */
97 int drm_syncobj_replace_fence(struct drm_file *file_private,
98 u32 handle,
99 struct dma_fence *fence)
100 {
101 struct dma_fence *old_fence;
102 int r;
103
104 r = drm_syncobj_swap_fences(file_private, handle, fence, &old_fence);
105 if (r)
106 return r;
107 dma_fence_put(old_fence);
108 return 0;
109 }
110 EXPORT_SYMBOL(drm_syncobj_replace_fence);
111
112 static int drm_syncobj_create(struct drm_file *file_private,
113 unsigned type,
114 unsigned flags, u32 *handle)
115 {
116 struct sync_file *sync_file = sync_file_alloc();
117 int ret;
118
119 idr_preload(GFP_KERNEL);
120 spin_lock(&file_private->syncobj_table_lock);
121 ret = idr_alloc(&file_private->syncobj_idr, sync_file, 1, 0, GFP_NOWAIT);
122 spin_unlock(&file_private->syncobj_table_lock);
123
124 idr_preload_end();
125
126 if (ret < 0)
127 return ret;
128
129 *handle = ret;
130 return 0;
131 }
132
133 static void drm_syncobj_destroy(struct drm_file *file_private,
134 u32 handle)
135 {
136 struct sync_file *sync_file = drm_syncobj_file_lookup(file_private, handle);
137 if (!sync_file)
138 return;
139
140 spin_lock(&file_private->syncobj_table_lock);
141 idr_remove(&file_private->syncobj_idr, handle);
142 spin_unlock(&file_private->syncobj_table_lock);
143
144 fput(sync_file->file);
145 }
146
147 static int drm_syncobj_handle_to_fd(struct drm_file *file_private,
148 u32 handle, int *fd)
149 {
150 struct sync_file *sync_file = drm_syncobj_file_lookup(file_private, handle);
151 int ret;
152 if (!sync_file)
153 return -EINVAL;
154
155 ret = get_unused_fd_flags(O_CLOEXEC);
156 if (ret < 0)
157 return ret;
158 fd_install(ret, sync_file->file);
159 *fd = ret;
160 return 0;
161 }
162
163 static int drm_syncobj_fd_to_handle(struct drm_file *file_private,
164 int fd, u32 *handle)
165 {
166 struct sync_file *sync_file = sync_file_fdget(fd);
167 int ret;
168 if (!sync_file)
169 return -EINVAL;
170 idr_preload(GFP_KERNEL);
171 spin_lock(&file_private->syncobj_table_lock);
172 ret = idr_alloc(&file_private->syncobj_idr, sync_file, 1, 0, GFP_NOWAIT);
173 spin_unlock(&file_private->syncobj_table_lock);
174 idr_preload_end();
175
176 if (ret < 0) {
177 fput(sync_file->file);
178 return ret;
179 }
180 *handle = ret;
181 return 0;
182 }
183
184 /**
185 * drm_syncobj_open - initalizes syncobj file-private structures at devnode open time
186 * @dev: drm_device which is being opened by userspace
187 * @file_private: drm file-private structure to set up
188 *
189 * Called at device open time, sets up the structure for handling refcounting
190 * of sync objects.
191 */
192 void
193 drm_syncobj_open(struct drm_file *file_private)
194 {
> 195 idr_init(&file_private->syncobj_idr);
196 spin_lock_init(&file_private->syncobj_table_lock);
197 }
198
199 static int
200 drm_syncobj_release_handle(int id, void *ptr, void *data)
201 {
202 struct sync_file *sync_file = ptr;
203
204 fput(sync_file->file);
205 return 0;
206 }
207
208 /**
209 * drm_syncobj_release - release file-private sync object resources
210 * @dev: drm_device which is being closed by userspace
211 * @file_private: drm file-private structure to clean up
212 *
213 * Called at close time when the filp is going away.
214 *
215 * Releases any remaining references on objects by this filp.
216 */
217 void
218 drm_syncobj_release(struct drm_file *file_private)
219 {
> 220 idr_for_each(&file_private->syncobj_idr,
221 &drm_syncobj_release_handle, file_private);
222 idr_destroy(&file_private->syncobj_idr);
223 }
---
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