hi, all
        ok, this patch set depends on
https://patchwork.kernel.org/patch/8953981/ [V4] powerpc: Implement {cmp}xchg 
for u8 and u16

sorry.

On 2016年09月19日 16:58, kbuild test robot wrote:
Hi Pan,

[auto build test ERROR on powerpc/next]
[also build test ERROR on v4.8-rc7 next-20160916]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]
[Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for 
convenience) to record what (public, well-known) commit your patch series was built on]
[Check https://git-scm.com/docs/git-format-patch for more information]

url:    
https://github.com/0day-ci/linux/commits/Pan-Xinhui/Implement-qspinlock-pv-qspinlock-on-ppc/20160919-133130
base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: powerpc-allyesconfig (attached as .config)
compiler: powerpc64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
         wget 
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
 -O ~/bin/make.cross
         chmod +x ~/bin/make.cross
         # save the attached .config to linux build tree
         make.cross ARCH=powerpc

All errors (new ones prefixed by >>):

    include/linux/compiler.h:491:2: note: in expansion of macro 
'_compiletime_assert'
      _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
      ^~~~~~~~~~~~~~~~~~~
    include/linux/bug.h:51:37: note: in expansion of macro 'compiletime_assert'
     #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                         ^~~~~~~~~~~~~~~~~~
    arch/powerpc/include/asm/cmpxchg.h:326:2: note: in expansion of macro 
'BUILD_BUG_ON_MSG'
      BUILD_BUG_ON_MSG(1, "Unsupported size for __cmpxchg");
      ^~~~~~~~~~~~~~~~
    In function '__cmpxchg',
        inlined from 'pv_wait_node' at 
kernel/locking/qspinlock_paravirt.h:328:3,
        inlined from '__pv_queued_spin_lock_slowpath' at 
kernel/locking/qspinlock.c:538:3:
    include/linux/compiler.h:491:38: error: call to '__compiletime_assert_326' 
declared with attribute error: Unsupported size for __cmpxchg
      _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
                                          ^
    include/linux/compiler.h:474:4: note: in definition of macro 
'__compiletime_assert'
        prefix ## suffix();    \
        ^~~~~~
    include/linux/compiler.h:491:2: note: in expansion of macro 
'_compiletime_assert'
      _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
      ^~~~~~~~~~~~~~~~~~~
    include/linux/bug.h:51:37: note: in expansion of macro 'compiletime_assert'
     #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                         ^~~~~~~~~~~~~~~~~~
    arch/powerpc/include/asm/cmpxchg.h:326:2: note: in expansion of macro 
'BUILD_BUG_ON_MSG'
      BUILD_BUG_ON_MSG(1, "Unsupported size for __cmpxchg");
      ^~~~~~~~~~~~~~~~
    In function '__cmpxchg',
        inlined from 'pv_wait_head_or_lock' at 
kernel/locking/qspinlock_paravirt.h:109:10,
        inlined from '__pv_queued_spin_lock_slowpath' at 
kernel/locking/qspinlock.c:573:5:
    include/linux/compiler.h:491:38: error: call to '__compiletime_assert_326' 
declared with attribute error: Unsupported size for __cmpxchg
      _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
                                          ^
    include/linux/compiler.h:474:4: note: in definition of macro 
'__compiletime_assert'
        prefix ## suffix();    \
        ^~~~~~
    include/linux/compiler.h:491:2: note: in expansion of macro 
'_compiletime_assert'
      _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
      ^~~~~~~~~~~~~~~~~~~
    include/linux/bug.h:51:37: note: in expansion of macro 'compiletime_assert'
     #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                         ^~~~~~~~~~~~~~~~~~
    arch/powerpc/include/asm/cmpxchg.h:326:2: note: in expansion of macro 
'BUILD_BUG_ON_MSG'
      BUILD_BUG_ON_MSG(1, "Unsupported size for __cmpxchg");
      ^~~~~~~~~~~~~~~~
    In function '__xchg_relaxed',
        inlined from 'pv_wait_head_or_lock' at 
kernel/locking/qspinlock_paravirt.h:442:8,
        inlined from '__pv_queued_spin_lock_slowpath' at 
kernel/locking/qspinlock.c:573:5:
    include/linux/compiler.h:491:38: error: call to '__compiletime_assert_113' 
declared with attribute error: Unsupported size for __xchg_local
      _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
                                          ^
    include/linux/compiler.h:474:4: note: in definition of macro 
'__compiletime_assert'
        prefix ## suffix();    \
        ^~~~~~
    include/linux/compiler.h:491:2: note: in expansion of macro 
'_compiletime_assert'
      _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
      ^~~~~~~~~~~~~~~~~~~
    include/linux/bug.h:51:37: note: in expansion of macro 'compiletime_assert'
     #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                         ^~~~~~~~~~~~~~~~~~
    arch/powerpc/include/asm/cmpxchg.h:113:2: note: in expansion of macro 
'BUILD_BUG_ON_MSG'
      BUILD_BUG_ON_MSG(1, "Unsupported size for __xchg_local");
      ^~~~~~~~~~~~~~~~
    In function '__cmpxchg',
        inlined from 'pv_kick_node' at 
kernel/locking/qspinlock_paravirt.h:366:6,
        inlined from '__pv_queued_spin_lock_slowpath' at 
kernel/locking/qspinlock.c:616:2:
    include/linux/compiler.h:491:38: error: call to '__compiletime_assert_326' 
declared with attribute error: Unsupported size for __cmpxchg
      _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
                                          ^
    include/linux/compiler.h:474:4: note: in definition of macro 
'__compiletime_assert'
        prefix ## suffix();    \
        ^~~~~~
    include/linux/compiler.h:491:2: note: in expansion of macro 
'_compiletime_assert'
      _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
      ^~~~~~~~~~~~~~~~~~~
    include/linux/bug.h:51:37: note: in expansion of macro 'compiletime_assert'
     #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                         ^~~~~~~~~~~~~~~~~~
    arch/powerpc/include/asm/cmpxchg.h:326:2: note: in expansion of macro 
'BUILD_BUG_ON_MSG'
      BUILD_BUG_ON_MSG(1, "Unsupported size for __cmpxchg");
      ^~~~~~~~~~~~~~~~
    In function '__xchg_relaxed',
        inlined from '__pv_queued_spin_lock_slowpath' at 
kernel/locking/qspinlock.c:184:14:
    include/linux/compiler.h:491:38: error: call to '__compiletime_assert_113' 
declared with attribute error: Unsupported size for __xchg_local
      _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
                                          ^
    include/linux/compiler.h:474:4: note: in definition of macro 
'__compiletime_assert'
        prefix ## suffix();    \
        ^~~~~~
    include/linux/compiler.h:491:2: note: in expansion of macro 
'_compiletime_assert'
      _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
      ^~~~~~~~~~~~~~~~~~~
    include/linux/bug.h:51:37: note: in expansion of macro 'compiletime_assert'
     #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                         ^~~~~~~~~~~~~~~~~~
    arch/powerpc/include/asm/cmpxchg.h:113:2: note: in expansion of macro 
'BUILD_BUG_ON_MSG'
      BUILD_BUG_ON_MSG(1, "Unsupported size for __xchg_local");
      ^~~~~~~~~~~~~~~~
    In function '__cmpxchg_relaxed',
        inlined from '__pv_queued_spin_unlock' at 
kernel/locking/qspinlock_paravirt.h:547:11:
include/linux/compiler.h:491:38: error: call to '__compiletime_assert_358' 
declared with attribute error: Unsupported size for __cmpxchg_relaxed
      _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
                                          ^
    include/linux/compiler.h:474:4: note: in definition of macro 
'__compiletime_assert'
        prefix ## suffix();    \
        ^~~~~~
    include/linux/compiler.h:491:2: note: in expansion of macro 
'_compiletime_assert'
      _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
      ^~~~~~~~~~~~~~~~~~~
    include/linux/bug.h:51:37: note: in expansion of macro 'compiletime_assert'
     #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                         ^~~~~~~~~~~~~~~~~~
    arch/powerpc/include/asm/cmpxchg.h:358:2: note: in expansion of macro 
'BUILD_BUG_ON_MSG'
      BUILD_BUG_ON_MSG(1, "Unsupported size for __cmpxchg_relaxed");
      ^~~~~~~~~~~~~~~~

vim +/__compiletime_assert_358 +491 include/linux/compiler.h

9a8ab1c3 Daniel Santos  2013-02-21  475                 
__compiletime_error_fallback(__cond);                   \
9a8ab1c3 Daniel Santos  2013-02-21  476         } while (0)
9a8ab1c3 Daniel Santos  2013-02-21  477
9a8ab1c3 Daniel Santos  2013-02-21  478  #define _compiletime_assert(condition, 
msg, prefix, suffix) \
9a8ab1c3 Daniel Santos  2013-02-21  479         __compiletime_assert(condition, 
msg, prefix, suffix)
9a8ab1c3 Daniel Santos  2013-02-21  480
9a8ab1c3 Daniel Santos  2013-02-21  481  /**
9a8ab1c3 Daniel Santos  2013-02-21  482   * compiletime_assert - break build 
and emit msg if condition is false
9a8ab1c3 Daniel Santos  2013-02-21  483   * @condition: a compile-time constant 
condition to check
9a8ab1c3 Daniel Santos  2013-02-21  484   * @msg:       a message to emit if 
condition is false
9a8ab1c3 Daniel Santos  2013-02-21  485   *
9a8ab1c3 Daniel Santos  2013-02-21  486   * In tradition of POSIX assert, this 
macro will break the build if the
9a8ab1c3 Daniel Santos  2013-02-21  487   * supplied condition is *false*, 
emitting the supplied error message if the
9a8ab1c3 Daniel Santos  2013-02-21  488   * compiler has support to do so.
9a8ab1c3 Daniel Santos  2013-02-21  489   */
9a8ab1c3 Daniel Santos  2013-02-21  490  #define compiletime_assert(condition, 
msg) \
9a8ab1c3 Daniel Santos  2013-02-21 @491         _compiletime_assert(condition, 
msg, __compiletime_assert_, __LINE__)
9a8ab1c3 Daniel Santos  2013-02-21  492
47933ad4 Peter Zijlstra 2013-11-06  493  #define 
compiletime_assert_atomic_type(t)                              \
47933ad4 Peter Zijlstra 2013-11-06  494         
compiletime_assert(__native_word(t),                            \
47933ad4 Peter Zijlstra 2013-11-06  495                 "Need native word sized 
stores/loads for atomicity.")
47933ad4 Peter Zijlstra 2013-11-06  496
9c3cdc1f Linus Torvalds 2008-05-10  497  /*
9c3cdc1f Linus Torvalds 2008-05-10  498   * Prevent the compiler from merging 
or refetching accesses.  The compiler
9c3cdc1f Linus Torvalds 2008-05-10  499   * is also forbidden from reordering 
successive instances of ACCESS_ONCE(),

:::::: The code at line 491 was first introduced by commit
:::::: 9a8ab1c39970a4938a72d94e6fd13be88a797590 bug.h, compiler.h: introduce 
compiletime_assert & BUILD_BUG_ON_MSG

:::::: TO: Daniel Santos <daniel.san...@pobox.com>
:::::: CC: Linus Torvalds <torva...@linux-foundation.org>

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


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