linux-kernel - Re: [PATCH v4 4/6] infiniband: cxgb4: Eliminate duplicate barriers on weakly-ordered archs

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Message-ID: <201803231138.06xQIU3w%fengguang.wu@intel.com>
Date:   Fri, 23 Mar 2018 12:14:18 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Sinan Kaya <okaya@...eaurora.org>
Cc:     kbuild-all@...org, linux-rdma@...r.kernel.org,
        timur@...eaurora.org, sulrich@...eaurora.org,
        linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Sinan Kaya <okaya@...eaurora.org>,
        Steve Wise <swise@...lsio.com>,
        Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...pe.ca>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 4/6] infiniband: cxgb4: Eliminate duplicate barriers
 on weakly-ordered archs

Hi Sinan,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.16-rc6 next-20180322]
[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/Sinan-Kaya/ib-Eliminate-duplicate-barriers-on-weakly-ordered-archs/20180321-091659
config: i386-allyesconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   In file included from drivers/infiniband/hw/cxgb4/iw_cxgb4.h:73:0,
                    from drivers/infiniband/hw/cxgb4/device.c:40:
   drivers/infiniband/hw/cxgb4/t4.h: In function 'pio_copy':
>> drivers/infiniband/hw/cxgb4/t4.h:460:3: error: implicit declaration of function 'writeq_relaxed'; did you mean 'write_pnet'? [-Werror=implicit-function-declaration]
      writeq_relaxed(*src, dst);
      ^~~~~~~~~~~~~~
      write_pnet
   cc1: some warnings being treated as errors
--
   In file included from drivers/infiniband/hw/cxgb4/iw_cxgb4.h:73:0,
                    from drivers/infiniband/hw/cxgb4/cm.c:53:
   drivers/infiniband/hw/cxgb4/t4.h: In function 'pio_copy':
>> drivers/infiniband/hw/cxgb4/t4.h:460:3: error: implicit declaration of function 'writeq_relaxed'; did you mean 'rt6_release'? [-Werror=implicit-function-declaration]
      writeq_relaxed(*src, dst);
      ^~~~~~~~~~~~~~
      rt6_release
   cc1: some warnings being treated as errors

vim +460 drivers/infiniband/hw/cxgb4/t4.h

   450	
   451	/* This function copies 64 byte coalesced work request to memory
   452	 * mapped BAR2 space. For coalesced WRs, the SGE fetches data
   453	 * from the FIFO instead of from Host.
   454	 */
   455	static inline void pio_copy(u64 __iomem *dst, u64 *src)
   456	{
   457		int count = 8;
   458	
   459		while (count) {
 > 460			writeq_relaxed(*src, dst);
   461			src++;
   462			dst++;
   463			count--;
   464		}
   465	}
   466	

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Download attachment ".config.gz" of type "application/gzip" (62176 bytes)