Hi Yulei, Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on linus/master] [also build test WARNING on v4.20-rc6 next-20181214] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/yulei-kernel-gmail-com/kfifo-add-memory-barrier-in-kfifo-to-prevent-data-loss/20181211-204949 reproduce: make htmldocs All warnings (new ones prefixed by >>): WARNING: convert(1) not found, for SVG to PDF conversion install ImageMagick (https://www.imagemagick.org) >> include/linux/kfifo.h:305: warning: Function parameter or member 'kfifo' not >> described in 'kfifo_read_index_in' include/linux/kfifo.h:305: warning: Excess function parameter 'fifo' description in 'kfifo_read_index_in' >> include/linux/kfifo.h:321: warning: Function parameter or member 'kfifo' not >> described in 'kfifo_write_index_in' >> include/linux/kfifo.h:321: warning: Function parameter or member 'val' not >> described in 'kfifo_write_index_in' include/linux/kfifo.h:321: warning: Excess function parameter 'fifo' description in 'kfifo_write_index_in' >> include/linux/kfifo.h:337: warning: Function parameter or member 'kfifo' not >> described in 'kfifo_read_index_out' include/linux/kfifo.h:337: warning: Excess function parameter 'fifo' description in 'kfifo_read_index_out' >> include/linux/kfifo.h:353: warning: Function parameter or member 'kfifo' not >> described in 'kfifo_write_index_out' >> include/linux/kfifo.h:353: warning: Function parameter or member 'val' not >> described in 'kfifo_write_index_out' include/linux/kfifo.h:353: warning: Excess function parameter 'fifo' description in 'kfifo_write_index_out' include/linux/rcutree.h:1: warning: no structured comments found kernel/rcu/tree.c:684: warning: Excess function parameter 'irq' description in 'rcu_nmi_exit' include/linux/srcu.h:175: warning: Function parameter or member 'p' not described in 'srcu_dereference_notrace' include/linux/srcu.h:175: warning: Function parameter or member 'sp' not described in 'srcu_dereference_notrace' include/linux/gfp.h:1: warning: no structured comments found include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:4439: warning: Function parameter or member 'wext.ibss' not described in 'wireless_dev' include/net/cfg80211.h:4439: warning: Function parameter or member 'wext.connect' not described in 'wireless_dev' include/net/cfg80211.h:4439: warning: Function parameter or member 'wext.keys' not described in 'wireless_dev' include/net/cfg80211.h:4439: warning: Function parameter or member 'wext.ie' not described in 'wireless_dev' include/net/cfg80211.h:4439: warning: Function parameter or member 'wext.ie_len' not described in 'wireless_dev' include/net/cfg80211.h:4439: warning: Function parameter or member 'wext.bssid' not described in 'wireless_dev' include/net/cfg80211.h:4439: warning: Function parameter or member 'wext.ssid' not described in 'wireless_dev' include/net/cfg80211.h:4439: warning: Function parameter or member 'wext.default_key' not described in 'wireless_dev' include/net/cfg80211.h:4439: warning: Function parameter or member 'wext.default_mgmt_key' not described in 'wireless_dev' include/net/cfg80211.h:4439: warning: Function parameter or member 'wext.prev_bssid_valid' not described in 'wireless_dev' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' include/net/cfg80211.h:2838: warning: cannot understand function prototype: 'struct cfg80211_ftm_responder_stats ' vim +305 include/linux/kfifo.h > 305 306 /** 307 * kfifo_write_index_in - updates the in index of the fifo 308 * @fifo: address of the kfifo to be used 309 * 310 * add memory write barrier to make sure the data entry is 311 * updated before increase the fifo->in 312 */ 313 #define kfifo_write_index_in(kfifo, val) \ 314 ({ \ 315 typeof((kfifo) + 1) __tmp = (kfifo); \ 316 struct __kfifo *__kfifo = __tmp; \ 317 unsigned int __val = (val); \ 318 smp_wmb(); \ 319 WRITE_ONCE(__kfifo->in, __val); \ 320 }) > 321 322 /** 323 * kfifo_read_index_out - returns the out index of the fifo 324 * @fifo: address of the kfifo to be used 325 * 326 * add memory barrier to make sure the fifo->out index is 327 * fetched before read data from the fifo, which is paired 328 * with the memory barrier in kfifo_write_index_out 329 */ 330 #define kfifo_read_index_out(kfifo) \ 331 ({ \ 332 typeof((kfifo) + 1) __tmp = (kfifo); \ 333 struct __kfifo *__kfifo = __tmp; \ 334 unsigned int __val = smp_load_acquire(&__kfifo->out); \ 335 __val; \ 336 }) > 337 338 /** 339 * kfifo_write_index_out - updates the out index of the fifo 340 * @fifo: address of the kfifo to be used 341 * 342 * add memory barrier to make sure reading out the entry before 343 * update the fifo->out index to avoid overwitten the entry by 344 * the producer 345 */ 346 #define kfifo_write_index_out(kfifo, val) \ 347 ({ \ 348 typeof((kfifo) + 1) __tmp = (kfifo); \ 349 struct __kfifo *__kfifo = __tmp; \ 350 unsigned int __val = (val); \ 351 smp_store_release(&__kfifo->out, __val); \ 352 }) > 353 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
.config.gz
Description: application/gzip
