Re: [PATCH 07/11] blktrace: export cgroup info in trace

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Hi Shaohua,

[auto build test WARNING on driver-core/driver-core-testing]
[also build test WARNING on v4.12-rc3 next-20170602]
[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/Shaohua-Li/kernfs-implement-i_generation/20170603-083132
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)
   arch/x86/include/asm/uaccess_32.h:1: warning: no structured comments found
>> kernel/trace/blktrace.c:750: warning: No description found for parameter 'cgid'
   kernel/trace/blktrace.c:807: warning: No description found for parameter 'cgid'
   include/linux/init.h:1: warning: no structured comments found
   include/linux/mod_devicetable.h:686: warning: Excess struct/union/enum/typedef member 'ver_major' description in 'fsl_mc_device_id'
   include/linux/mod_devicetable.h:686: warning: Excess struct/union/enum/typedef member 'ver_minor' description in 'fsl_mc_device_id'
   kernel/sched/core.c:2088: warning: No description found for parameter 'rf'
   kernel/sched/core.c:2088: 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'
   include/linux/usb/gadget.h:230: warning: No description found for parameter 'claimed'
   include/linux/usb/gadget.h:230: warning: No description found for parameter 'enabled'
   include/linux/usb/gadget.h:408: warning: No description found for parameter 'quirk_altset_not_supp'
   include/linux/usb/gadget.h:408: warning: No description found for parameter 'quirk_stall_not_supp'
   include/linux/usb/gadget.h:408: warning: No description found for parameter 'quirk_zlp_not_supp'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'set_busid'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'irq_handler'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'irq_preinstall'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'irq_postinstall'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'irq_uninstall'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'debugfs_init'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'gem_open_object'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'gem_close_object'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'prime_handle_to_fd'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'prime_fd_to_handle'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'gem_prime_export'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'gem_prime_import'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'gem_prime_pin'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'gem_prime_unpin'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'gem_prime_res_obj'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'gem_prime_get_sg_table'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'gem_prime_import_sg_table'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'gem_prime_vmap'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'gem_prime_vunmap'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'gem_prime_mmap'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'gem_vm_ops'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'major'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'minor'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'patchlevel'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'name'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'desc'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'date'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'driver_features'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'ioctls'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'num_ioctls'
   include/drm/drm_drv.h:524: warning: No description found for parameter 'fops'
   include/drm/drm_color_mgmt.h:1: warning: no structured comments found
   drivers/gpu/drm/drm_plane_helper.c:403: warning: No description found for parameter 'ctx'
   drivers/gpu/drm/drm_plane_helper.c:404: warning: No description found for parameter 'ctx'
   drivers/gpu/drm/i915/intel_lpe_audio.c:355: warning: No description found for parameter 'dp_output'
   drivers/gpu/drm/i915/intel_lpe_audio.c:355: warning: No description found for parameter 'link_rate'
   drivers/gpu/drm/i915/intel_lpe_audio.c:356: warning: No description found for parameter 'dp_output'
   drivers/gpu/drm/i915/intel_lpe_audio.c:356: warning: No description found for parameter 'link_rate'
   Documentation/core-api/assoc_array.rst:13: WARNING: Enumerated list ends without a blank line; unexpected unindent.
   Documentation/doc-guide/sphinx.rst:126: ERROR: Unknown target name: "sphinx c domain".
   kernel/sched/fair.c:7650: 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:638: ERROR: Unknown target name: "iio_val".
   drivers/iio/industrialio-core.c:645: 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.
   drivers/pci/pci.c:3456: ERROR: Unexpected indentation.
   include/linux/regulator/driver.h:271: ERROR: Unknown target name: "regulator_regmap_x_voltage".
   include/linux/spi/spi.h:370: ERROR: Unexpected indentation.
   drivers/gpu/drm/drm_scdc_helper.c:203: ERROR: Unexpected indentation.
   drivers/gpu/drm/drm_scdc_helper.c:204: WARNING: Block quote ends without a blank line; unexpected unindent.
   drivers/gpu/drm/drm_ioctl.c:690: WARNING: Definition list ends without a blank line; unexpected unindent.
   Documentation/gpu/todo.rst:111: ERROR: Unknown target name: "drm_fb".
   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".
   Documentation/userspace-api/unshare.rst:108: WARNING: Inline emphasis start-string without end-string.
   Documentation/usb/typec.rst:: WARNING: document isn't included in any toctree
   Documentation/usb/usb3-debug-port.rst:: WARNING: document isn't included in any toctree
   Fontconfig warning: "/home/kbuild/.config/fontconfig/fonts.conf", line 43: Having multiple values in <test> isn't supported and may not work as expected
   Fontconfig warning: "/home/kbuild/.config/fontconfig/fonts.conf", line 56: Having multiple values in <test> isn't supported and may not work as expected
   Fontconfig warning: "/home/kbuild/.config/fontconfig/fonts.conf", line 69: Having multiple values in <test> isn't supported and may not work as expected
   Fontconfig warning: "/home/kbuild/.config/fontconfig/fonts.conf", line 82: Having multiple values in <test> isn't supported and may not work as expected
   Fontconfig warning: "/home/kbuild/.config/fontconfig/fonts.conf", line 96: Having multiple values in <test> isn't supported and may not work as expected
   Fontconfig warning: "/home/kbuild/.config/fontconfig/fonts.conf", line 109: Having multiple values in <test> isn't supported and may not work as expected
   Fontconfig warning: "/home/kbuild/.config/fontconfig/fonts.conf", line 122: Having multiple values in <test> isn't supported and may not work as expected
   Fontconfig warning: "/home/kbuild/.config/fontconfig/fonts.conf", line 133: Having multiple values in <test> isn't supported and may not work as expected
   Fontconfig warning: "/home/kbuild/.config/fontconfig/fonts.conf", line 164: Having multiple values in <test> isn't supported and may not work as expected
   Fontconfig warning: "/home/kbuild/.config/fontconfig/fonts.conf", line 193: Having multiple values in <test> isn't supported and may not work as expected
   Fontconfig warning: "~/.fonts.conf", line 43: Having multiple values in <test> isn't supported and may not work as expected
   Fontconfig warning: "~/.fonts.conf", line 56: Having multiple values in <test> isn't supported and may not work as expected
   Fontconfig warning: "~/.fonts.conf", line 69: Having multiple values in <test> isn't supported and may not work as expected

vim +/cgid +750 kernel/trace/blktrace.c

5f3ea37c block/blktrace.c        Arnaldo Carvalho de Melo 2008-10-30  734  
5f3ea37c block/blktrace.c        Arnaldo Carvalho de Melo 2008-10-30  735  /**
5f3ea37c block/blktrace.c        Arnaldo Carvalho de Melo 2008-10-30  736   * blk_add_trace_rq - Add a trace for a request oriented action
5f3ea37c block/blktrace.c        Arnaldo Carvalho de Melo 2008-10-30  737   * @rq:		the source request
caf7df12 kernel/trace/blktrace.c Christoph Hellwig        2017-04-20  738   * @error:	return status to log
af5040da kernel/trace/blktrace.c Roman Pen                2014-03-04  739   * @nr_bytes:	number of completed bytes
5f3ea37c block/blktrace.c        Arnaldo Carvalho de Melo 2008-10-30  740   * @what:	the action
5f3ea37c block/blktrace.c        Arnaldo Carvalho de Melo 2008-10-30  741   *
5f3ea37c block/blktrace.c        Arnaldo Carvalho de Melo 2008-10-30  742   * Description:
5f3ea37c block/blktrace.c        Arnaldo Carvalho de Melo 2008-10-30  743   *     Records an action against a request. Will log the bio offset + size.
5f3ea37c block/blktrace.c        Arnaldo Carvalho de Melo 2008-10-30  744   *
5f3ea37c block/blktrace.c        Arnaldo Carvalho de Melo 2008-10-30  745   **/
caf7df12 kernel/trace/blktrace.c Christoph Hellwig        2017-04-20  746  static void blk_add_trace_rq(struct request *rq, int error,
f46b1436 kernel/trace/blktrace.c Shaohua Li               2017-06-02  747  			     unsigned int nr_bytes, u32 what,
f46b1436 kernel/trace/blktrace.c Shaohua Li               2017-06-02  748  			     struct kernfs_node_id *cgid)
5f3ea37c block/blktrace.c        Arnaldo Carvalho de Melo 2008-10-30  749  {
caf7df12 kernel/trace/blktrace.c Christoph Hellwig        2017-04-20 @750  	struct blk_trace *bt = rq->q->blk_trace;
5f3ea37c block/blktrace.c        Arnaldo Carvalho de Melo 2008-10-30  751  
5f3ea37c block/blktrace.c        Arnaldo Carvalho de Melo 2008-10-30  752  	if (likely(!bt))
5f3ea37c block/blktrace.c        Arnaldo Carvalho de Melo 2008-10-30  753  		return;
5f3ea37c block/blktrace.c        Arnaldo Carvalho de Melo 2008-10-30  754  
57292b58 kernel/trace/blktrace.c Christoph Hellwig        2017-01-31  755  	if (blk_rq_is_passthrough(rq))
5f3ea37c block/blktrace.c        Arnaldo Carvalho de Melo 2008-10-30  756  		what |= BLK_TC_ACT(BLK_TC_PC);
48b77ad6 kernel/trace/blktrace.c Christoph Hellwig        2017-01-27  757  	else
5f3ea37c block/blktrace.c        Arnaldo Carvalho de Melo 2008-10-30  758  		what |= BLK_TC_ACT(BLK_TC_FS);

:::::: The code at line 750 was first introduced by commit
:::::: caf7df12272118e0274c8353bcfeaf60c7743a47 block: remove the errors field from struct request

:::::: TO: Christoph Hellwig <hch@xxxxxx>
:::::: CC: Jens Axboe <axboe@xxxxxx>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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