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Date:   Fri, 21 Jul 2023 09:31:01 +0800
From:   kernel test robot <lkp@intel.com>
To:     Peng Zhang <zhangpeng362@huawei.com>, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org, willy@infradead.org
Cc:     llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
        hch@infradead.org, sidhartha.kumar@oracle.com,
        akpm@linux-foundation.org, wangkefeng.wang@huawei.com,
        sunnanyong@huawei.com, ZhangPeng <zhangpeng362@huawei.com>
Subject: Re: [PATCH v3 09/10] mm/page_io: convert count_swpout_vm_event() to
 take in a folio
Message-ID: <202307210951.NCdscoSS-lkp@intel.com>
References: <20230720130147.4071649-10-zhangpeng362@huawei.com>
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In-Reply-To: <20230720130147.4071649-10-zhangpeng362@huawei.com>
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Hi Peng,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-everything]
[also build test ERROR on axboe-block/for-next linus/master v6.5-rc2 next-20230720]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Peng-Zhang/mm-page_io-remove-unneeded-ClearPageUptodate/20230720-210515
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20230720130147.4071649-10-zhangpeng362%40huawei.com
patch subject: [PATCH v3 09/10] mm/page_io: convert count_swpout_vm_event() to take in a folio
config: um-randconfig-r003-20230720 (https://download.01.org/0day-ci/archive/20230721/202307210951.NCdscoSS-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce: (https://download.01.org/0day-ci/archive/20230721/202307210951.NCdscoSS-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202307210951.NCdscoSS-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from mm/page_io.c:15:
   In file included from include/linux/kernel_stat.h:9:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from arch/um/include/asm/hardirq.h:5:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/um/include/asm/io.h:24:
   include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     547 |         val = __raw_readb(PCI_IOBASE + addr);
         |                           ~~~~~~~~~~ ^
   include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     560 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
         |                                                         ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
      37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
         |                                                   ^
   In file included from mm/page_io.c:15:
   In file included from include/linux/kernel_stat.h:9:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from arch/um/include/asm/hardirq.h:5:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/um/include/asm/io.h:24:
   include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     573 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
         |                                                         ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
      35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
         |                                                   ^
   In file included from mm/page_io.c:15:
   In file included from include/linux/kernel_stat.h:9:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from arch/um/include/asm/hardirq.h:5:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/um/include/asm/io.h:24:
   include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     584 |         __raw_writeb(value, PCI_IOBASE + addr);
         |                             ~~~~~~~~~~ ^
   include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     594 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
         |                                                       ~~~~~~~~~~ ^
   include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     604 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
         |                                                       ~~~~~~~~~~ ^
   include/asm-generic/io.h:692:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     692 |         readsb(PCI_IOBASE + addr, buffer, count);
         |                ~~~~~~~~~~ ^
   include/asm-generic/io.h:700:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     700 |         readsw(PCI_IOBASE + addr, buffer, count);
         |                ~~~~~~~~~~ ^
   include/asm-generic/io.h:708:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     708 |         readsl(PCI_IOBASE + addr, buffer, count);
         |                ~~~~~~~~~~ ^
   include/asm-generic/io.h:717:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     717 |         writesb(PCI_IOBASE + addr, buffer, count);
         |                 ~~~~~~~~~~ ^
   include/asm-generic/io.h:726:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     726 |         writesw(PCI_IOBASE + addr, buffer, count);
         |                 ~~~~~~~~~~ ^
   include/asm-generic/io.h:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     735 |         writesl(PCI_IOBASE + addr, buffer, count);
         |                 ~~~~~~~~~~ ^
>> mm/page_io.c:211:18: error: use of undeclared identifier 'THP_SWPOUT'; did you mean 'PSWPOUT'?
     211 |                 count_vm_event(THP_SWPOUT);
         |                                ^~~~~~~~~~
         |                                PSWPOUT
   include/linux/vm_event_item.h:32:47: note: 'PSWPOUT' declared here
      32 | enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
         |                                               ^
   12 warnings and 1 error generated.


vim +211 mm/page_io.c

2f772e6cadf8ad Seth Jennings 2013-04-29  207  
c40c44eb86eb74 ZhangPeng     2023-07-20  208  static inline void count_swpout_vm_event(struct folio *folio)
225311a46411c3 Huang Ying    2017-09-06  209  {
c40c44eb86eb74 ZhangPeng     2023-07-20  210  	if (unlikely(folio_test_pmd_mappable(folio)))
225311a46411c3 Huang Ying    2017-09-06 @211  		count_vm_event(THP_SWPOUT);
c40c44eb86eb74 ZhangPeng     2023-07-20  212  	count_vm_events(PSWPOUT, folio_nr_pages(folio));
225311a46411c3 Huang Ying    2017-09-06  213  }
225311a46411c3 Huang Ying    2017-09-06  214  

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