Re: [PATCH v2 1/1] ALSA: control: Use list_for_each_entry_safe()

29 Aug 2023


      Hi Andy,
kernel test robot noticed the following build warnings:
[auto build test WARNING on tiwai-sound/for-next]
[also build test WARNING on tiwai-sound/for-linus linus/master v6.5 next-20230829]
[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/Andy-Shevchenko/ALSA-control-...
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git for-next
patch link:    https://lore.kernel.org/r/20230829142307.3916823-1-andriy.shevchenko%40linux...
patch subject: [PATCH v2 1/1] ALSA: control: Use list_for_each_entry_safe()
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20230830/202308300312.Uq5j7oU2-lkp@i...)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230830/202308300312.Uq5j7oU2-lkp@i...)
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/202308300312.Uq5j7oU2-lkp@intel.com/
All warnings (new ones prefixed by >>):
include/linux/list.h:520:9: note: in expansion of macro 'container_of'
     520 |         container_of(ptr, type, member)
         |         ^~~~~~~~~~~~
   include/linux/list.h:564:9: note: in expansion of macro 'list_entry'
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |         ^~~~~~~~~~
   include/linux/list.h:779:27: note: in expansion of macro 'list_next_entry'
     779 |              pos = n, n = list_next_entry(n, member))
         |                           ^~~~~~~~~~~~~~~
   sound/core/control_led.c:304:17: note: in expansion of macro 'list_for_each_entry_safe'
     304 |                 list_for_each_entry_safe(lctl, _lctl, &led->controls, list)
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/list.h:564:25: error: invalid type argument of '->' (have 'struct snd_ctl_led_ctl')
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |                         ^~
   include/linux/build_bug.h:78:56: note: in definition of macro '__static_assert'
      78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
         |                                                        ^~~~
   include/linux/container_of.h:20:9: note: in expansion of macro 'static_assert'
      20 |         static_assert(__same_type(*(ptr), ((type *)0)->member) ||       \
         |         ^~~~~~~~~~~~~
   include/linux/container_of.h:21:23: note: in expansion of macro '__same_type'
      21 |                       __same_type(*(ptr), void),                        \
         |                       ^~~~~~~~~~~
   include/linux/list.h:520:9: note: in expansion of macro 'container_of'
     520 |         container_of(ptr, type, member)
         |         ^~~~~~~~~~~~
   include/linux/list.h:564:9: note: in expansion of macro 'list_entry'
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |         ^~~~~~~~~~
   include/linux/list.h:779:27: note: in expansion of macro 'list_next_entry'
     779 |              pos = n, n = list_next_entry(n, member))
         |                           ^~~~~~~~~~~~~~~
   sound/core/control_led.c:304:17: note: in expansion of macro 'list_for_each_entry_safe'
     304 |                 list_for_each_entry_safe(lctl, _lctl, &led->controls, list)
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/compiler_types.h:338:27: error: expression in static assertion is not an integer
     338 | #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
         |                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:78:56: note: in definition of macro '__static_assert'
      78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
         |                                                        ^~~~
   include/linux/container_of.h:20:9: note: in expansion of macro 'static_assert'
      20 |         static_assert(__same_type(*(ptr), ((type *)0)->member) ||       \
         |         ^~~~~~~~~~~~~
   include/linux/container_of.h:20:23: note: in expansion of macro '__same_type'
      20 |         static_assert(__same_type(*(ptr), ((type *)0)->member) ||       \
         |                       ^~~~~~~~~~~
   include/linux/list.h:520:9: note: in expansion of macro 'container_of'
     520 |         container_of(ptr, type, member)
         |         ^~~~~~~~~~~~
   include/linux/list.h:564:9: note: in expansion of macro 'list_entry'
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |         ^~~~~~~~~~
   include/linux/list.h:779:27: note: in expansion of macro 'list_next_entry'
     779 |              pos = n, n = list_next_entry(n, member))
         |                           ^~~~~~~~~~~~~~~
   sound/core/control_led.c:304:17: note: in expansion of macro 'list_for_each_entry_safe'
     304 |                 list_for_each_entry_safe(lctl, _lctl, &led->controls, list)
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/list.h:564:47: error: invalid type argument of unary '*' (have 'struct snd_ctl_led_ctl')
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |                                               ^~~~~~
   include/linux/container_of.h:23:11: note: in definition of macro 'container_of'
      23 |         ((type *)(__mptr - offsetof(type, member))); })
         |           ^~~~
   include/linux/list.h:564:9: note: in expansion of macro 'list_entry'
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |         ^~~~~~~~~~
   include/linux/list.h:779:27: note: in expansion of macro 'list_next_entry'
     779 |              pos = n, n = list_next_entry(n, member))
         |                           ^~~~~~~~~~~~~~~
   sound/core/control_led.c:304:17: note: in expansion of macro 'list_for_each_entry_safe'
     304 |                 list_for_each_entry_safe(lctl, _lctl, &led->controls, list)
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~
   In file included from include/uapi/linux/posix_types.h:5,
                    from include/uapi/linux/types.h:14,
                    from include/linux/types.h:6,
                    from include/uapi/linux/sysinfo.h:5,
                    from include/uapi/linux/kernel.h:5,
                    from include/linux/cache.h:5,
                    from include/linux/slab.h:15:
   include/linux/list.h:564:47: error: invalid type argument of unary '*' (have 'struct snd_ctl_led_ctl')
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |                                               ^~~~~~
   include/linux/stddef.h:16:52: note: in definition of macro 'offsetof'
      16 | #define offsetof(TYPE, MEMBER)  __builtin_offsetof(TYPE, MEMBER)
         |                                                    ^~~~
   include/linux/list.h:520:9: note: in expansion of macro 'container_of'
     520 |         container_of(ptr, type, member)
         |         ^~~~~~~~~~~~
   include/linux/list.h:564:9: note: in expansion of macro 'list_entry'
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |         ^~~~~~~~~~
   include/linux/list.h:779:27: note: in expansion of macro 'list_next_entry'
     779 |              pos = n, n = list_next_entry(n, member))
         |                           ^~~~~~~~~~~~~~~
   sound/core/control_led.c:304:17: note: in expansion of macro 'list_for_each_entry_safe'
     304 |                 list_for_each_entry_safe(lctl, _lctl, &led->controls, list)
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~
...
...
include/linux/list.h:779:21: warning: left-hand operand of comma expression has no effect [-Wunused-value]
779 |              pos = n, n = list_next_entry(n, member))
         |                     ^
   sound/core/control_led.c:304:17: note: in expansion of macro 'list_for_each_entry_safe'
     304 |                 list_for_each_entry_safe(lctl, _lctl, &led->controls, list)
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~
   sound/core/control_led.c: In function 'snd_ctl_led_reset':
   include/linux/container_of.h:18:41: error: incompatible types when assigning to type 'struct snd_ctl_led_ctl' from type 'struct snd_ctl_led_ctl *'
      18 | #define container_of(ptr, type, member) ({                              \
         |                                         ^
   include/linux/list.h:520:9: note: in expansion of macro 'container_of'
     520 |         container_of(ptr, type, member)
         |         ^~~~~~~~~~~~
   include/linux/list.h:564:9: note: in expansion of macro 'list_entry'
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |         ^~~~~~~~~~
   include/linux/list.h:777:21: note: in expansion of macro 'list_next_entry'
     777 |                 n = list_next_entry(pos, member);                       \
         |                     ^~~~~~~~~~~~~~~
   sound/core/control_led.c:329:9: note: in expansion of macro 'list_for_each_entry_safe'
     329 |         list_for_each_entry_safe(lctl, _lctl, &led->controls, list)
         |         ^~~~~~~~~~~~~~~~~~~~~~~~
   sound/core/control_led.c:329:40: error: incompatible types when assigning to type 'struct snd_ctl_led_ctl *' from type 'struct snd_ctl_led_ctl'
     329 |         list_for_each_entry_safe(lctl, _lctl, &led->controls, list)
         |                                        ^~~~~
   include/linux/list.h:779:20: note: in definition of macro 'list_for_each_entry_safe'
     779 |              pos = n, n = list_next_entry(n, member))
         |                    ^
   include/linux/list.h:564:25: error: invalid type argument of '->' (have 'struct snd_ctl_led_ctl')
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |                         ^~
   include/linux/container_of.h:19:33: note: in definition of macro 'container_of'
      19 |         void *__mptr = (void *)(ptr);                                   \
         |                                 ^~~
   include/linux/list.h:564:9: note: in expansion of macro 'list_entry'
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |         ^~~~~~~~~~
   include/linux/list.h:779:27: note: in expansion of macro 'list_next_entry'
     779 |              pos = n, n = list_next_entry(n, member))
         |                           ^~~~~~~~~~~~~~~
   sound/core/control_led.c:329:9: note: in expansion of macro 'list_for_each_entry_safe'
     329 |         list_for_each_entry_safe(lctl, _lctl, &led->controls, list)
         |         ^~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/list.h:564:25: error: invalid type argument of '->' (have 'struct snd_ctl_led_ctl')
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |                         ^~
   include/linux/build_bug.h:78:56: note: in definition of macro '__static_assert'
      78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
         |                                                        ^~~~
   include/linux/container_of.h:20:9: note: in expansion of macro 'static_assert'
      20 |         static_assert(__same_type(*(ptr), ((type *)0)->member) ||       \
         |         ^~~~~~~~~~~~~
   include/linux/container_of.h:20:23: note: in expansion of macro '__same_type'
      20 |         static_assert(__same_type(*(ptr), ((type *)0)->member) ||       \
         |                       ^~~~~~~~~~~
   include/linux/list.h:520:9: note: in expansion of macro 'container_of'
     520 |         container_of(ptr, type, member)
         |         ^~~~~~~~~~~~
   include/linux/list.h:564:9: note: in expansion of macro 'list_entry'
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |         ^~~~~~~~~~
   include/linux/list.h:779:27: note: in expansion of macro 'list_next_entry'
     779 |              pos = n, n = list_next_entry(n, member))
         |                           ^~~~~~~~~~~~~~~
   sound/core/control_led.c:329:9: note: in expansion of macro 'list_for_each_entry_safe'
     329 |         list_for_each_entry_safe(lctl, _lctl, &led->controls, list)
         |         ^~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/list.h:564:47: error: invalid type argument of unary '*' (have 'struct snd_ctl_led_ctl')
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |                                               ^~~~~~
   include/linux/build_bug.h:78:56: note: in definition of macro '__static_assert'
      78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
         |                                                        ^~~~
   include/linux/container_of.h:20:9: note: in expansion of macro 'static_assert'
      20 |         static_assert(__same_type(*(ptr), ((type *)0)->member) ||       \
         |         ^~~~~~~~~~~~~
   include/linux/container_of.h:20:23: note: in expansion of macro '__same_type'
      20 |         static_assert(__same_type(*(ptr), ((type *)0)->member) ||       \
         |                       ^~~~~~~~~~~
   include/linux/list.h:520:9: note: in expansion of macro 'container_of'
     520 |         container_of(ptr, type, member)
         |         ^~~~~~~~~~~~
   include/linux/list.h:564:9: note: in expansion of macro 'list_entry'
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |         ^~~~~~~~~~
   include/linux/list.h:779:27: note: in expansion of macro 'list_next_entry'
     779 |              pos = n, n = list_next_entry(n, member))
         |                           ^~~~~~~~~~~~~~~
   sound/core/control_led.c:329:9: note: in expansion of macro 'list_for_each_entry_safe'
     329 |         list_for_each_entry_safe(lctl, _lctl, &led->controls, list)
         |         ^~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/list.h:564:25: error: invalid type argument of '->' (have 'struct snd_ctl_led_ctl')
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |                         ^~
   include/linux/build_bug.h:78:56: note: in definition of macro '__static_assert'
      78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
         |                                                        ^~~~
   include/linux/container_of.h:20:9: note: in expansion of macro 'static_assert'
      20 |         static_assert(__same_type(*(ptr), ((type *)0)->member) ||       \
         |         ^~~~~~~~~~~~~
   include/linux/container_of.h:21:23: note: in expansion of macro '__same_type'
      21 |                       __same_type(*(ptr), void),                        \
         |                       ^~~~~~~~~~~
   include/linux/list.h:520:9: note: in expansion of macro 'container_of'
     520 |         container_of(ptr, type, member)
         |         ^~~~~~~~~~~~
   include/linux/list.h:564:9: note: in expansion of macro 'list_entry'
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |         ^~~~~~~~~~
   include/linux/list.h:779:27: note: in expansion of macro 'list_next_entry'
     779 |              pos = n, n = list_next_entry(n, member))
         |                           ^~~~~~~~~~~~~~~
   sound/core/control_led.c:329:9: note: in expansion of macro 'list_for_each_entry_safe'
     329 |         list_for_each_entry_safe(lctl, _lctl, &led->controls, list)
         |         ^~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/compiler_types.h:338:27: error: expression in static assertion is not an integer
     338 | #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
         |                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:78:56: note: in definition of macro '__static_assert'
      78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
         |                                                        ^~~~
   include/linux/container_of.h:20:9: note: in expansion of macro 'static_assert'
      20 |         static_assert(__same_type(*(ptr), ((type *)0)->member) ||       \
         |         ^~~~~~~~~~~~~
   include/linux/container_of.h:20:23: note: in expansion of macro '__same_type'
      20 |         static_assert(__same_type(*(ptr), ((type *)0)->member) ||       \
         |                       ^~~~~~~~~~~
   include/linux/list.h:520:9: note: in expansion of macro 'container_of'
     520 |         container_of(ptr, type, member)
         |         ^~~~~~~~~~~~
   include/linux/list.h:564:9: note: in expansion of macro 'list_entry'
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |         ^~~~~~~~~~
   include/linux/list.h:779:27: note: in expansion of macro 'list_next_entry'
     779 |              pos = n, n = list_next_entry(n, member))
         |                           ^~~~~~~~~~~~~~~
   sound/core/control_led.c:329:9: note: in expansion of macro 'list_for_each_entry_safe'
     329 |         list_for_each_entry_safe(lctl, _lctl, &led->controls, list)
         |         ^~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/list.h:564:47: error: invalid type argument of unary '*' (have 'struct snd_ctl_led_ctl')
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |                                               ^~~~~~
   include/linux/container_of.h:23:11: note: in definition of macro 'container_of'
      23 |         ((type *)(__mptr - offsetof(type, member))); })
         |           ^~~~
   include/linux/list.h:564:9: note: in expansion of macro 'list_entry'
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |         ^~~~~~~~~~
   include/linux/list.h:779:27: note: in expansion of macro 'list_next_entry'
     779 |              pos = n, n = list_next_entry(n, member))
         |                           ^~~~~~~~~~~~~~~
   sound/core/control_led.c:329:9: note: in expansion of macro 'list_for_each_entry_safe'
     329 |         list_for_each_entry_safe(lctl, _lctl, &led->controls, list)
         |         ^~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/list.h:564:47: error: invalid type argument of unary '*' (have 'struct snd_ctl_led_ctl')
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |                                               ^~~~~~
   include/linux/stddef.h:16:52: note: in definition of macro 'offsetof'
      16 | #define offsetof(TYPE, MEMBER)  __builtin_offsetof(TYPE, MEMBER)
         |                                                    ^~~~
   include/linux/list.h:520:9: note: in expansion of macro 'container_of'
     520 |         container_of(ptr, type, member)
         |         ^~~~~~~~~~~~
   include/linux/list.h:564:9: note: in expansion of macro 'list_entry'
     564 |         list_entry((pos)->member.next, typeof(*(pos)), member)
         |         ^~~~~~~~~~
   include/linux/list.h:779:27: note: in expansion of macro 'list_next_entry'
     779 |              pos = n, n = list_next_entry(n, member))
         |                           ^~~~~~~~~~~~~~~
   sound/core/control_led.c:329:9: note: in expansion of macro 'list_for_each_entry_safe'
     329 |         list_for_each_entry_safe(lctl, _lctl, &led->controls, list)
         |         ^~~~~~~~~~~~~~~~~~~~~~~~
...
...
include/linux/list.h:779:21: warning: left-hand operand of comma expression has no effect [-Wunused-value]
779 |              pos = n, n = list_next_entry(n, member))
         |                     ^
   sound/core/control_led.c:329:9: note: in expansion of macro 'list_for_each_entry_safe'
     329 |         list_for_each_entry_safe(lctl, _lctl, &led->controls, list)
         |         ^~~~~~~~~~~~~~~~~~~~~~~~
vim +779 include/linux/list.h
4d70c74659d974 Andy Shevchenko e130816164e244 Andy Shevchenko e130816164e244 Andy Shevchenko e130816164e244 Andy Shevchenko e130816164e244 Andy Shevchenko e130816164e244 Andy Shevchenko e130816164e244 Andy Shevchenko e130816164e244 Andy Shevchenko e130816164e244 Andy Shevchenko e130816164e244 Andy Shevchenko ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds 8e3a67a99231f9 Randy Dunlap ^1da177e4c3f41 Linus Torvalds 3943f42c11896c Andrey Utkin ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds 93be3c2eb3371f Oleg Nesterov e130816164e244 Andy Shevchenko 8120e2e5141a42 Oleg Nesterov ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds 8e3a67a99231f9 Randy Dunlap ^1da177e4c3f41 Linus Torvalds 3943f42c11896c Andrey Utkin ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds 93be3c2eb3371f Oleg Nesterov e130816164e244 Andy Shevchenko 8120e2e5141a42 Oleg Nesterov ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds 72fd4a35a82433 Robert P. J. Day ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds 3943f42c11896c Andrey Utkin fe96e57d77481c Randy Dunlap 72fd4a35a82433 Robert P. J. Day ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds fe96e57d77481c Randy Dunlap 8e3a67a99231f9 Randy Dunlap ^1da177e4c3f41 Linus Torvalds 3943f42c11896c Andrey Utkin fe96e57d77481c Randy Dunlap fe96e57d77481c Randy Dunlap fe96e57d77481c Randy Dunlap ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds 8120e2e5141a42 Oleg Nesterov e130816164e244 Andy Shevchenko 8120e2e5141a42 Oleg Nesterov ^1da177e4c3f41 Linus Torvalds 768f3591e2b1cc Pavel Emelyanov 768f3591e2b1cc Pavel Emelyanov 768f3591e2b1cc Pavel Emelyanov 768f3591e2b1cc Pavel Emelyanov 3943f42c11896c Andrey Utkin 768f3591e2b1cc Pavel Emelyanov 768f3591e2b1cc Pavel Emelyanov 768f3591e2b1cc Pavel Emelyanov 768f3591e2b1cc Pavel Emelyanov 768f3591e2b1cc Pavel Emelyanov 8120e2e5141a42 Oleg Nesterov e130816164e244 Andy Shevchenko 8120e2e5141a42 Oleg Nesterov 768f3591e2b1cc Pavel Emelyanov e229c2fb3370a0 Arnaldo fe96e57d77481c Randy Dunlap 8e3a67a99231f9 Randy Dunlap e229c2fb3370a0 Arnaldo 3943f42c11896c Andrey Utkin fe96e57d77481c Randy Dunlap fe96e57d77481c Randy Dunlap e229c2fb3370a0 Arnaldo e229c2fb3370a0 Arnaldo e130816164e244 Andy Shevchenko 8120e2e5141a42 Oleg Nesterov e229c2fb3370a0 Arnaldo b862815c3ee7b4 Jiri Pirko b862815c3ee7b4 Jiri Pirko b862815c3ee7b4 Jiri Pirko b862815c3ee7b4 Jiri Pirko b862815c3ee7b4 Jiri Pirko b862815c3ee7b4 Jiri Pirko b862815c3ee7b4 Jiri Pirko b862815c3ee7b4 Jiri Pirko b862815c3ee7b4 Jiri Pirko b862815c3ee7b4 Jiri Pirko e130816164e244 Andy Shevchenko b862815c3ee7b4 Jiri Pirko b862815c3ee7b4 Jiri Pirko ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds 8e3a67a99231f9 Randy Dunlap ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds 3943f42c11896c Andrey Utkin ^1da177e4c3f41 Linus Torvalds ^1da177e4c3f41 Linus Torvalds 93be3c2eb3371f Oleg Nesterov 8120e2e5141a42 Oleg Nesterov e130816164e244 Andy Shevchenko 8120e2e5141a42 Oleg Nesterov ^1da177e4c3f41 Linus Torvalds

2022-11-30  672 2020-10-15  673  /** 2020-10-15  674   * list_entry_is_head - test if the entry points to the head of the list 2020-10-15  675   * @pos:	the type * to cursor 2020-10-15  676   * @head:	the head for your list. 2020-10-15  677   * @member:	the name of the list_head within the struct. 2020-10-15  678   */ 2020-10-15  679  #define list_entry_is_head(pos, head, member)				\ 2020-10-15  680  	(&pos->member == (head)) 2020-10-15  681 2005-04-16  682  /** 2005-04-16  683   * list_for_each_entry	-	iterate over list of given type 2006-06-25  684   * @pos:	the type * to use as a loop cursor. 2005-04-16  685   * @head:	the head for your list. 2014-11-14  686   * @member:	the name of the list_head within the struct. 2005-04-16  687   */ 2005-04-16  688  #define list_for_each_entry(pos, head, member)				\ 2013-11-12  689  	for (pos = list_first_entry(head, typeof(*pos), member);	\ 2020-10-15  690  	     !list_entry_is_head(pos, head, member);			\ 2013-11-12  691  	     pos = list_next_entry(pos, member)) 2005-04-16  692 2005-04-16  693  /** 2005-04-16  694   * list_for_each_entry_reverse - iterate backwards over list of given type. 2006-06-25  695   * @pos:	the type * to use as a loop cursor. 2005-04-16  696   * @head:	the head for your list. 2014-11-14  697   * @member:	the name of the list_head within the struct. 2005-04-16  698   */ 2005-04-16  699  #define list_for_each_entry_reverse(pos, head, member)			\ 2013-11-12  700  	for (pos = list_last_entry(head, typeof(*pos), member);		\ 2020-10-15  701  	     !list_entry_is_head(pos, head, member); 			\ 2013-11-12  702  	     pos = list_prev_entry(pos, member)) 2005-04-16  703 2005-04-16  704  /** 2007-02-10  705   * list_prepare_entry - prepare a pos entry for use in list_for_each_entry_continue() 2005-04-16  706   * @pos:	the type * to use as a start point 2005-04-16  707   * @head:	the head of the list 2014-11-14  708   * @member:	the name of the list_head within the struct. 2006-06-25  709   * 2007-02-10  710   * Prepares a pos entry for use as a start point in list_for_each_entry_continue(). 2005-04-16  711   */ 2005-04-16  712  #define list_prepare_entry(pos, head, member) \ 2005-04-16  713  	((pos) ? : list_entry(head, typeof(*pos), member)) 2005-04-16  714 2005-04-16  715  /** 2006-06-25  716   * list_for_each_entry_continue - continue iteration over list of given type 2006-06-25  717   * @pos:	the type * to use as a loop cursor. 2005-04-16  718   * @head:	the head for your list. 2014-11-14  719   * @member:	the name of the list_head within the struct. 2006-06-25  720   * 2006-06-25  721   * Continue to iterate over list of given type, continuing after 2006-06-25  722   * the current position. 2005-04-16  723   */ 2005-04-16  724  #define list_for_each_entry_continue(pos, head, member) 		\ 2013-11-12  725  	for (pos = list_next_entry(pos, member);			\ 2020-10-15  726  	     !list_entry_is_head(pos, head, member);			\ 2013-11-12  727  	     pos = list_next_entry(pos, member)) 2005-04-16  728 2007-09-18  729  /** 2007-09-18  730   * list_for_each_entry_continue_reverse - iterate backwards from the given point 2007-09-18  731   * @pos:	the type * to use as a loop cursor. 2007-09-18  732   * @head:	the head for your list. 2014-11-14  733   * @member:	the name of the list_head within the struct. 2007-09-18  734   * 2007-09-18  735   * Start to iterate over list of given type backwards, continuing after 2007-09-18  736   * the current position. 2007-09-18  737   */ 2007-09-18  738  #define list_for_each_entry_continue_reverse(pos, head, member)		\ 2013-11-12  739  	for (pos = list_prev_entry(pos, member);			\ 2020-10-15  740  	     !list_entry_is_head(pos, head, member);			\ 2013-11-12  741  	     pos = list_prev_entry(pos, member)) 2007-09-18  742 Carvalho de Melo 2006-03-20  743  /** 2006-06-25  744   * list_for_each_entry_from - iterate over list of given type from the current point 2006-06-25  745   * @pos:	the type * to use as a loop cursor. Carvalho de Melo 2006-03-20  746   * @head:	the head for your list. 2014-11-14  747   * @member:	the name of the list_head within the struct. 2006-06-25  748   * 2006-06-25  749   * Iterate over list of given type, continuing from current position. Carvalho de Melo 2006-03-20  750   */ Carvalho de Melo 2006-03-20  751  #define list_for_each_entry_from(pos, head, member) 			\ 2020-10-15  752  	for (; !list_entry_is_head(pos, head, member);			\ 2013-11-12  753  	     pos = list_next_entry(pos, member)) Carvalho de Melo 2006-03-20  754 2017-02-03  755  /** 2017-02-03  756   * list_for_each_entry_from_reverse - iterate backwards over list of given type 2017-02-03  757   *                                    from the current point 2017-02-03  758   * @pos:	the type * to use as a loop cursor. 2017-02-03  759   * @head:	the head for your list. 2017-02-03  760   * @member:	the name of the list_head within the struct. 2017-02-03  761   * 2017-02-03  762   * Iterate backwards over list of given type, continuing from current position. 2017-02-03  763   */ 2017-02-03  764  #define list_for_each_entry_from_reverse(pos, head, member)		\ 2020-10-15  765  	for (; !list_entry_is_head(pos, head, member);			\ 2017-02-03  766  	     pos = list_prev_entry(pos, member)) 2017-02-03  767 2005-04-16  768  /** 2005-04-16  769   * list_for_each_entry_safe - iterate over list of given type safe against removal of list entry 2006-06-25  770   * @pos:	the type * to use as a loop cursor. 2005-04-16  771   * @n:		another type * to use as temporary storage 2005-04-16  772   * @head:	the head for your list. 2014-11-14  773   * @member:	the name of the list_head within the struct. 2005-04-16  774   */ 2005-04-16  775  #define list_for_each_entry_safe(pos, n, head, member)			\ 2013-11-12  776  	for (pos = list_first_entry(head, typeof(*pos), member),	\ 2013-11-12  777  		n = list_next_entry(pos, member);			\ 2020-10-15  778  	     !list_entry_is_head(pos, head, member); 			\ 2013-11-12 @779  	     pos = n, n = list_next_entry(n, member)) 2005-04-16  780
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