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.santos@xxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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