Re: [PATCH] kernel-doc: rename the kernel-doc directive 'functions' to 'specific'

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Hi Changbin,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[cannot apply to v5.4-rc2 next-20191010]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Changbin-Du/kernel-doc-rename-the-kernel-doc-directive-functions-to-specific/20191014-013215
reproduce: make htmldocs

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

   Warning: The Sphinx 'sphinx_rtd_theme' HTML theme was not found. Make sure you have the theme installed to produce pretty HTML output. Falling back to the default theme.
   WARNING: dot(1) not found, for better output quality install graphviz from http://www.graphviz.org
   WARNING: convert(1) not found, for SVG to PDF conversion install ImageMagick (https://www.imagemagick.org)
   Error: Cannot open file drivers/dma-buf/reservation.c
   Error: Cannot open file drivers/dma-buf/reservation.c
   Error: Cannot open file drivers/dma-buf/reservation.c
   Error: Cannot open file include/linux/reservation.h
   Error: Cannot open file include/linux/reservation.h
>> include/linux/regulator/machine.h:196: warning: struct member 'max_uV_step' not described in 'regulation_constraints'
>> include/linux/regulator/driver.h:223: warning: struct member 'resume' not described in 'regulator_ops'
>> include/linux/i2c.h:337: warning: struct member 'init_irq' not described in 'i2c_client'
   drivers/gpio/gpiolib-of.c:92: warning: Excess function parameter 'dev' description in 'of_gpio_need_valid_mask'
>> include/linux/spi/spi.h:190: warning: struct member 'driver_override' not described in 'spi_device'
   mm/util.c:1: warning: 'get_user_pages_fast' not found
>> mm/slab.c:4215: warning: function parameter 'objp' not described in '__ksize'
   drivers/usb/typec/bus.c:1: warning: 'typec_altmode_register_driver' not found
   drivers/usb/typec/bus.c:1: warning: 'typec_altmode_unregister_driver' not found
   drivers/usb/typec/class.c:1: warning: 'typec_altmode_unregister_notifier' not found
   drivers/usb/typec/class.c:1: warning: 'typec_altmode_register_notifier' not found
>> include/linux/w1.h:277: warning: struct member 'of_match_table' not described in 'w1_family'
   drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c:335: warning: Excess function parameter 'dev' description in 'amdgpu_gem_prime_export'
   drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c:336: warning: Excess function parameter 'dev' description in 'amdgpu_gem_prime_export'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c:142: warning: function parameter 'blockable' not described in 'amdgpu_mn_read_lock'
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:347: warning: cannot understand function prototype: 'struct amdgpu_vm_pt_cursor '
   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:348: warning: cannot understand function prototype: 'struct amdgpu_vm_pt_cursor '
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:494: warning: function parameter 'start' not described in 'amdgpu_vm_pt_first_dfs'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:546: warning: function parameter 'adev' not described in 'for_each_amdgpu_vm_pt_dfs_safe'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:546: warning: function parameter 'vm' not described in 'for_each_amdgpu_vm_pt_dfs_safe'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:546: warning: function parameter 'start' not described in 'for_each_amdgpu_vm_pt_dfs_safe'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:546: warning: function parameter 'cursor' not described in 'for_each_amdgpu_vm_pt_dfs_safe'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:546: warning: function parameter 'entry' not described in 'for_each_amdgpu_vm_pt_dfs_safe'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:821: warning: function parameter 'level' not described in 'amdgpu_vm_bo_param'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1283: warning: function parameter 'params' not described in 'amdgpu_vm_update_flags'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1283: warning: function parameter 'bo' not described in 'amdgpu_vm_update_flags'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1283: warning: function parameter 'level' not described in 'amdgpu_vm_update_flags'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1283: warning: function parameter 'pe' not described in 'amdgpu_vm_update_flags'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1283: warning: function parameter 'addr' not described in 'amdgpu_vm_update_flags'
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1283: warning: function parameter 'count' not described in 'amdgpu_vm_update_flags'

vim +1207 drivers/gpu/drm/i915/i915_drv.h

eec688e1420da5 Robert Bragg          2016-11-07  1069  
16d98b31f80775 Robert Bragg          2016-12-07  1070  /**
16d98b31f80775 Robert Bragg          2016-12-07  1071   * struct i915_perf_stream - state for a single open stream FD
16d98b31f80775 Robert Bragg          2016-12-07  1072   */
eec688e1420da5 Robert Bragg          2016-11-07  1073  struct i915_perf_stream {
16d98b31f80775 Robert Bragg          2016-12-07  1074  	/**
16d98b31f80775 Robert Bragg          2016-12-07  1075  	 * @dev_priv: i915 drm device
16d98b31f80775 Robert Bragg          2016-12-07  1076  	 */
eec688e1420da5 Robert Bragg          2016-11-07  1077  	struct drm_i915_private *dev_priv;
eec688e1420da5 Robert Bragg          2016-11-07  1078  
16d98b31f80775 Robert Bragg          2016-12-07  1079  	/**
16d98b31f80775 Robert Bragg          2016-12-07  1080  	 * @link: Links the stream into ``&drm_i915_private->streams``
16d98b31f80775 Robert Bragg          2016-12-07  1081  	 */
eec688e1420da5 Robert Bragg          2016-11-07  1082  	struct list_head link;
eec688e1420da5 Robert Bragg          2016-11-07  1083  
6d2438c8233bd0 Chris Wilson          2019-01-15  1084  	/**
6d2438c8233bd0 Chris Wilson          2019-01-15  1085  	 * @wakeref: As we keep the device awake while the perf stream is
6d2438c8233bd0 Chris Wilson          2019-01-15  1086  	 * active, we track our runtime pm reference for later release.
6d2438c8233bd0 Chris Wilson          2019-01-15  1087  	 */
6619c0075f784d Chris Wilson          2019-01-14  1088  	intel_wakeref_t wakeref;
6619c0075f784d Chris Wilson          2019-01-14  1089  
16d98b31f80775 Robert Bragg          2016-12-07  1090  	/**
16d98b31f80775 Robert Bragg          2016-12-07  1091  	 * @sample_flags: Flags representing the `DRM_I915_PERF_PROP_SAMPLE_*`
16d98b31f80775 Robert Bragg          2016-12-07  1092  	 * properties given when opening a stream, representing the contents
16d98b31f80775 Robert Bragg          2016-12-07  1093  	 * of a single sample as read() by userspace.
16d98b31f80775 Robert Bragg          2016-12-07  1094  	 */
eec688e1420da5 Robert Bragg          2016-11-07  1095  	u32 sample_flags;
16d98b31f80775 Robert Bragg          2016-12-07  1096  
16d98b31f80775 Robert Bragg          2016-12-07  1097  	/**
16d98b31f80775 Robert Bragg          2016-12-07  1098  	 * @sample_size: Considering the configured contents of a sample
16d98b31f80775 Robert Bragg          2016-12-07  1099  	 * combined with the required header size, this is the total size
16d98b31f80775 Robert Bragg          2016-12-07  1100  	 * of a single sample record.
16d98b31f80775 Robert Bragg          2016-12-07  1101  	 */
d79651522e89c4 Robert Bragg          2016-11-07  1102  	int sample_size;
eec688e1420da5 Robert Bragg          2016-11-07  1103  
16d98b31f80775 Robert Bragg          2016-12-07  1104  	/**
16d98b31f80775 Robert Bragg          2016-12-07  1105  	 * @ctx: %NULL if measuring system-wide across all contexts or a
16d98b31f80775 Robert Bragg          2016-12-07  1106  	 * specific context that is being monitored.
16d98b31f80775 Robert Bragg          2016-12-07  1107  	 */
eec688e1420da5 Robert Bragg          2016-11-07  1108  	struct i915_gem_context *ctx;
16d98b31f80775 Robert Bragg          2016-12-07  1109  
16d98b31f80775 Robert Bragg          2016-12-07  1110  	/**
16d98b31f80775 Robert Bragg          2016-12-07  1111  	 * @enabled: Whether the stream is currently enabled, considering
16d98b31f80775 Robert Bragg          2016-12-07  1112  	 * whether the stream was opened in a disabled state and based
16d98b31f80775 Robert Bragg          2016-12-07  1113  	 * on `I915_PERF_IOCTL_ENABLE` and `I915_PERF_IOCTL_DISABLE` calls.
16d98b31f80775 Robert Bragg          2016-12-07  1114  	 */
eec688e1420da5 Robert Bragg          2016-11-07  1115  	bool enabled;
eec688e1420da5 Robert Bragg          2016-11-07  1116  
16d98b31f80775 Robert Bragg          2016-12-07  1117  	/**
16d98b31f80775 Robert Bragg          2016-12-07  1118  	 * @ops: The callbacks providing the implementation of this specific
16d98b31f80775 Robert Bragg          2016-12-07  1119  	 * type of configured stream.
16d98b31f80775 Robert Bragg          2016-12-07  1120  	 */
d79651522e89c4 Robert Bragg          2016-11-07  1121  	const struct i915_perf_stream_ops *ops;
701f8231a2fe17 Lionel Landwerlin     2017-08-03  1122  
701f8231a2fe17 Lionel Landwerlin     2017-08-03  1123  	/**
701f8231a2fe17 Lionel Landwerlin     2017-08-03  1124  	 * @oa_config: The OA configuration used by the stream.
701f8231a2fe17 Lionel Landwerlin     2017-08-03  1125  	 */
701f8231a2fe17 Lionel Landwerlin     2017-08-03  1126  	struct i915_oa_config *oa_config;
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1127  
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1128  	/**
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06 @1129  	 * The OA context specific information.
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1130  	 */
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1131  	struct intel_context *pinned_ctx;
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1132  	u32 specific_ctx_id;
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1133  	u32 specific_ctx_id_mask;
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1134  
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1135  	struct hrtimer poll_check_timer;
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1136  	wait_queue_head_t poll_wq;
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1137  	bool pollin;
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1138  
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1139  	bool periodic;
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1140  	int period_exponent;
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1141  
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1142  	/**
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06 @1143  	 * State of the OA buffer.
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1144  	 */
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1145  	struct {
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1146  		struct i915_vma *vma;
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1147  		u8 *vaddr;
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1148  		u32 last_ctx_id;
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1149  		int format;
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1150  		int format_size;
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1151  		int size_exponent;
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1152  
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1153  		/**
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06 @1154  		 * Locks reads and writes to all head/tail state
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1155  		 *
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1156  		 * Consider: the head and tail pointer state needs to be read
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1157  		 * consistently from a hrtimer callback (atomic context) and
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1158  		 * read() fop (user context) with tail pointer updates happening
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1159  		 * in atomic context and head updates in user context and the
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1160  		 * (unlikely) possibility of read() errors needing to reset all
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1161  		 * head/tail state.
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1162  		 *
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1163  		 * Note: Contention/performance aren't currently a significant
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1164  		 * concern here considering the relatively low frequency of
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1165  		 * hrtimer callbacks (5ms period) and that reads typically only
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1166  		 * happen in response to a hrtimer event and likely complete
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1167  		 * before the next callback.
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1168  		 *
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1169  		 * Note: This lock is not held *while* reading and copying data
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1170  		 * to userspace so the value of head observed in htrimer
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1171  		 * callbacks won't represent any partial consumption of data.
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1172  		 */
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1173  		spinlock_t ptr_lock;
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1174  
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1175  		/**
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06 @1176  		 * One 'aging' tail pointer and one 'aged' tail pointer ready to
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1177  		 * used for reading.
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1178  		 *
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1179  		 * Initial values of 0xffffffff are invalid and imply that an
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1180  		 * update is required (and should be ignored by an attempted
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1181  		 * read)
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1182  		 */
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1183  		struct {
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1184  			u32 offset;
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1185  		} tails[2];
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1186  
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1187  		/**
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06 @1188  		 * Index for the aged tail ready to read() data up to.
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1189  		 */
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1190  		unsigned int aged_tail_idx;
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1191  
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1192  		/**
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06 @1193  		 * A monotonic timestamp for when the current aging tail pointer
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1194  		 * was read; used to determine when it is old enough to trust.
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1195  		 */
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1196  		u64 aging_timestamp;
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1197  
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1198  		/**
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06 @1199  		 * Although we can always read back the head pointer register,
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1200  		 * we prefer to avoid trusting the HW state, just to avoid any
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1201  		 * risk that some hardware condition could * somehow bump the
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1202  		 * head pointer unpredictably and cause us to forward the wrong
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1203  		 * OA buffer data to userspace.
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1204  		 */
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1205  		u32 head;
a37f08a882b01a Umesh Nerlige Ramappa 2019-08-06  1206  	} oa_buffer;
d79651522e89c4 Robert Bragg          2016-11-07 @1207  };
d79651522e89c4 Robert Bragg          2016-11-07  1208  

:::::: The code at line 1207 was first introduced by commit
:::::: d79651522e89c4ffa8992b48dfe449f0c583f809 drm/i915: Enable i915 perf stream for Haswell OA unit

:::::: TO: Robert Bragg <robert@xxxxxxxxxxxxx>
:::::: CC: Daniel Vetter <daniel.vetter@xxxxxxxx>

---
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