Re: [PATCH v3 21/23] device-dax: Add an 'align' attribute

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Hi Dan,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on 01830e6c042e8eb6eb202e05d7df8057135b4c26]

url:    https://github.com/0day-ci/linux/commits/Dan-Williams/device-dax-Support-sub-dividing-soft-reserved-ranges/20200801-114823
base:    01830e6c042e8eb6eb202e05d7df8057135b4c26
config: m68k-randconfig-r034-20200731 (attached as .config)
compiler: m68k-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k 

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

All errors (new ones prefixed by >>):

                    from include/linux/irqflags.h:16,
                    from arch/m68k/include/asm/atomic.h:6,
                    from include/linux/atomic.h:7,
                    from include/linux/percpu-refcount.h:53,
                    from include/linux/memremap.h:6,
                    from drivers/dax/bus.c:3:
   drivers/dax/bus.c: In function 'dev_dax_shrink':
   include/linux/kernel.h:850:29: warning: comparison of distinct pointer types lacks a cast
     850 |   (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
         |                             ^~
   include/linux/kernel.h:864:4: note: in expansion of macro '__typecheck'
     864 |   (__typecheck(x, y) && __no_side_effects(x, y))
         |    ^~~~~~~~~~~
   include/linux/kernel.h:874:24: note: in expansion of macro '__safe_cmp'
     874 |  __builtin_choose_expr(__safe_cmp(x, y), \
         |                        ^~~~~~~~~~
   include/linux/kernel.h:883:19: note: in expansion of macro '__careful_cmp'
     883 | #define min(x, y) __careful_cmp(x, y, <)
         |                   ^~~~~~~~~~~~~
   drivers/dax/bus.c:881:12: note: in expansion of macro 'min'
     881 |   shrink = min(to_shrink, range_len(range));
         |            ^~~
   In file included from include/linux/printk.h:405,
                    from include/linux/kernel.h:15,
                    from include/linux/list.h:9,
                    from include/linux/preempt.h:11,
                    from arch/m68k/include/asm/irqflags.h:6,
                    from include/linux/irqflags.h:16,
                    from arch/m68k/include/asm/atomic.h:6,
                    from include/linux/atomic.h:7,
                    from include/linux/percpu-refcount.h:53,
                    from include/linux/memremap.h:6,
                    from drivers/dax/bus.c:3:
   drivers/dax/bus.c: In function 'dev_dax_validate_align':
   drivers/dax/bus.c:1062:16: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 6 has type 'resource_size_t' {aka 'unsigned int'} [-Wformat=]
    1062 |   dev_dbg(dev, "%s: align %u invalid for size %llu\n",
         |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/dynamic_debug.h:125:15: note: in definition of macro '__dynamic_func_call'
     125 |   func(&id, ##__VA_ARGS__);  \
         |               ^~~~~~~~~~~
   include/linux/dynamic_debug.h:157:2: note: in expansion of macro '_dynamic_func_call'
     157 |  _dynamic_func_call(fmt,__dynamic_dev_dbg,   \
         |  ^~~~~~~~~~~~~~~~~~
   include/linux/dev_printk.h:115:2: note: in expansion of macro 'dynamic_dev_dbg'
     115 |  dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
         |  ^~~~~~~~~~~~~~~
   include/linux/dev_printk.h:115:23: note: in expansion of macro 'dev_fmt'
     115 |  dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
         |                       ^~~~~~~
   drivers/dax/bus.c:1062:3: note: in expansion of macro 'dev_dbg'
    1062 |   dev_dbg(dev, "%s: align %u invalid for size %llu\n",
         |   ^~~~~~~
   drivers/dax/bus.c:1062:50: note: format string is defined here
    1062 |   dev_dbg(dev, "%s: align %u invalid for size %llu\n",
         |                                               ~~~^
         |                                                  |
         |                                                  long long unsigned int
         |                                               %u
   In file included from include/linux/printk.h:405,
                    from include/linux/kernel.h:15,
                    from include/linux/list.h:9,
                    from include/linux/preempt.h:11,
                    from arch/m68k/include/asm/irqflags.h:6,
                    from include/linux/irqflags.h:16,
                    from arch/m68k/include/asm/atomic.h:6,
                    from include/linux/atomic.h:7,
                    from include/linux/percpu-refcount.h:53,
                    from include/linux/memremap.h:6,
                    from drivers/dax/bus.c:3:
   drivers/dax/bus.c:1071:17: warning: format '%ld' expects argument of type 'long int', but argument 6 has type 'ssize_t' {aka 'int'} [-Wformat=]
    1071 |    dev_dbg(dev, "%s: align %u invalid for range %ld\n",
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/dynamic_debug.h:125:15: note: in definition of macro '__dynamic_func_call'
     125 |   func(&id, ##__VA_ARGS__);  \
         |               ^~~~~~~~~~~
   include/linux/dynamic_debug.h:157:2: note: in expansion of macro '_dynamic_func_call'
     157 |  _dynamic_func_call(fmt,__dynamic_dev_dbg,   \
         |  ^~~~~~~~~~~~~~~~~~
   include/linux/dev_printk.h:115:2: note: in expansion of macro 'dynamic_dev_dbg'
     115 |  dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
         |  ^~~~~~~~~~~~~~~
   include/linux/dev_printk.h:115:23: note: in expansion of macro 'dev_fmt'
     115 |  dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
         |                       ^~~~~~~
   drivers/dax/bus.c:1071:4: note: in expansion of macro 'dev_dbg'
    1071 |    dev_dbg(dev, "%s: align %u invalid for range %ld\n",
         |    ^~~~~~~
   drivers/dax/bus.c:1071:51: note: format string is defined here
    1071 |    dev_dbg(dev, "%s: align %u invalid for range %ld\n",
         |                                                 ~~^
         |                                                   |
         |                                                   long int
         |                                                 %d
   In file included from include/asm-generic/pgtable-nopud.h:7,
                    from arch/m68k/include/asm/pgtable_no.h:5,
                    from arch/m68k/include/asm/pgtable.h:3,
                    from include/linux/pgtable.h:6,
                    from include/linux/mm.h:33,
                    from include/linux/dax.h:6,
                    from drivers/dax/bus.c:8:
>> include/asm-generic/pgtable-nop4d.h:11:20: error: 'PGDIR_SHIFT' undeclared (first use in this function); did you mean 'PUD_SHIFT'?
      11 | #define P4D_SHIFT  PGDIR_SHIFT
         |                    ^~~~~~~~~~~
   include/asm-generic/pgtable-nopud.h:18:19: note: in expansion of macro 'P4D_SHIFT'
      18 | #define PUD_SHIFT P4D_SHIFT
         |                   ^~~~~~~~~
   include/asm-generic/pgtable-nopud.h:20:28: note: in expansion of macro 'PUD_SHIFT'
      20 | #define PUD_SIZE   (1UL << PUD_SHIFT)
         |                            ^~~~~~~~~
   drivers/dax/bus.c:1078:7: note: in expansion of macro 'PUD_SIZE'
    1078 |  case PUD_SIZE:
         |       ^~~~~~~~
   include/asm-generic/pgtable-nop4d.h:11:20: note: each undeclared identifier is reported only once for each function it appears in
      11 | #define P4D_SHIFT  PGDIR_SHIFT
         |                    ^~~~~~~~~~~
   include/asm-generic/pgtable-nopud.h:18:19: note: in expansion of macro 'P4D_SHIFT'
      18 | #define PUD_SHIFT P4D_SHIFT
         |                   ^~~~~~~~~
   include/asm-generic/pgtable-nopud.h:20:28: note: in expansion of macro 'PUD_SHIFT'
      20 | #define PUD_SIZE   (1UL << PUD_SHIFT)
         |                            ^~~~~~~~~
   drivers/dax/bus.c:1078:7: note: in expansion of macro 'PUD_SIZE'
    1078 |  case PUD_SIZE:
         |       ^~~~~~~~
>> drivers/dax/bus.c:1082:7: error: 'PMD_SIZE' undeclared (first use in this function); did you mean 'P4D_SIZE'?
    1082 |  case PMD_SIZE:
         |       ^~~~~~~~
         |       P4D_SIZE

vim +1082 drivers/dax/bus.c

  1050	
  1051	static ssize_t dev_dax_validate_align(struct dev_dax *dev_dax)
  1052	{
  1053		resource_size_t dev_size = dev_dax_size(dev_dax);
  1054		struct device *dev = &dev_dax->dev;
  1055		ssize_t rc, i;
  1056	
  1057		if (dev->driver)
  1058			return -EBUSY;
  1059	
  1060		rc = -EINVAL;
  1061		if (dev_size > 0 && !alloc_is_aligned(dev_dax, dev_size)) {
  1062			dev_dbg(dev, "%s: align %u invalid for size %llu\n",
  1063				__func__, dev_dax->align, dev_size);
  1064			return rc;
  1065		}
  1066	
  1067		for (i = 0; i < dev_dax->nr_range; i++) {
  1068			size_t len = range_len(&dev_dax->ranges[i].range);
  1069	
  1070			if (!alloc_is_aligned(dev_dax, len)) {
  1071				dev_dbg(dev, "%s: align %u invalid for range %ld\n",
  1072					__func__, dev_dax->align, i);
  1073				return rc;
  1074			}
  1075		}
  1076	
  1077		switch (dev_dax->align) {
  1078		case PUD_SIZE:
  1079			if (!IS_ENABLED(CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD))
  1080				break;
  1081			fallthrough;
> 1082		case PMD_SIZE:
  1083			if (!has_transparent_hugepage())
  1084				break;
  1085			fallthrough;
  1086		case PAGE_SIZE:
  1087			rc = 0;
  1088			break;
  1089		}
  1090	
  1091		return rc;
  1092	}
  1093	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

Attachment: .config.gz
Description: application/gzip


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