From: kbuild test robot <lkp@intel.com>
To: Pan Xinhui <xinhui.pan@linux.vnet.ibm.com>
Cc: kbuild-all@01.org, linux-kernel@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, benh@kernel.crashing.org,
paulus@samba.org, mpe@ellerman.id.au, peterz@infradead.org,
mingo@redhat.com, paulmck@linux.vnet.ibm.com,
waiman.long@hpe.com, xinhui.pan@linux.vnet.ibm.com,
virtualization@lists.linux-foundation.org
Subject: Re: [PATCH v7 6/6] powerpc: pSeries: Add pv-qspinlock build config/make
Date: Mon, 19 Sep 2016 16:58:35 +0800 [thread overview]
Message-ID: <201609191651.3BF51xRa%fengguang.wu@intel.com> (raw)
In-Reply-To: <1474277037-15200-7-git-send-email-xinhui.pan@linux.vnet.ibm.com>
[-- Attachment #1: Type: text/plain, Size: 10966 bytes --]
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@pobox.com>
:::::: CC: Linus Torvalds <torvalds@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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WARNING: multiple messages have this Message-ID (diff)
From: kbuild test robot <lkp@intel.com>
Cc: xinhui.pan@linux.vnet.ibm.com, peterz@infradead.org,
mpe@ellerman.id.au, linux-kernel@vger.kernel.org,
waiman.long@hpe.com, virtualization@lists.linux-foundation.org,
mingo@redhat.com, paulus@samba.org, kbuild-all@01.org,
benh@kernel.crashing.org, paulmck@linux.vnet.ibm.com,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v7 6/6] powerpc: pSeries: Add pv-qspinlock build config/make
Date: Mon, 19 Sep 2016 16:58:35 +0800 [thread overview]
Message-ID: <201609191651.3BF51xRa%fengguang.wu@intel.com> (raw)
In-Reply-To: <1474277037-15200-7-git-send-email-xinhui.pan@linux.vnet.ibm.com>
[-- Attachment #1: Type: text/plain, Size: 10966 bytes --]
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@pobox.com>
:::::: CC: Linus Torvalds <torvalds@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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next prev parent reply other threads:[~2016-09-19 8:59 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-19 9:23 [PATCH v7 0/6] Implement qspinlock/pv-qspinlock on ppc Pan Xinhui
2016-09-19 9:23 ` Pan Xinhui
2016-09-19 9:23 ` [PATCH v7 1/6] pv-qspinlock: use cmpxchg_release in __pv_queued_spin_unlock Pan Xinhui
2016-09-19 9:23 ` Pan Xinhui
2016-09-22 14:02 ` [tip:locking/core] locking/pv-qspinlock: Use cmpxchg_release() in __pv_queued_spin_unlock() tip-bot for Pan Xinhui
2016-09-19 9:23 ` [PATCH v7 2/6] powerpc/qspinlock: powerpc support qspinlock Pan Xinhui
2016-09-19 9:23 ` Pan Xinhui
2016-09-19 9:23 ` [PATCH v7 3/6] powerpc: pseries/Kconfig: Add qspinlock build config Pan Xinhui
2016-09-19 9:23 ` Pan Xinhui
2016-09-19 8:40 ` kbuild test robot
2016-09-19 8:40 ` kbuild test robot
2016-09-19 9:23 ` [PATCH v7 4/6] powerpc: lib/locks.c: Add cpu yield/wake helper function Pan Xinhui
2016-09-22 15:17 ` Boqun Feng
2016-09-22 15:17 ` Boqun Feng
2016-09-19 9:23 ` Pan Xinhui
2016-09-19 9:23 ` [PATCH v7 5/6] powerpc/pv-qspinlock: powerpc support pv-qspinlock Pan Xinhui
2016-09-19 9:23 ` Pan Xinhui
2016-09-19 9:23 ` [PATCH v7 6/6] powerpc: pSeries: Add pv-qspinlock build config/make Pan Xinhui
2016-09-19 8:58 ` kbuild test robot [this message]
2016-09-19 8:58 ` kbuild test robot
2016-09-22 5:54 ` xinhui
2016-09-22 5:54 ` xinhui
2016-09-22 10:31 ` Michael Ellerman
2016-09-22 10:31 ` Michael Ellerman
2016-09-19 9:23 ` Pan Xinhui
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