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Date: Tue, 12 May 2015 10:53:03 +0200 From: Ingo Molnar <mingo@...nel.org> To: Linus Torvalds <torvalds@...ux-foundation.org>, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Waiman Long <Waiman.Long@...com> Cc: Peter Anvin <hpa@...or.com>, Brian Gerst <brgerst@...il.com>, Thomas Gleixner <tglx@...utronix.de>, Borislav Petkov <bp@...en8.de>, Peter Zijlstra <peterz@...radead.org>, Andy Lutomirski <luto@...capital.net>, Louis Langholtz <lou_langholtz@...com>, Denys Vlasenko <dvlasenk@...hat.com>, linux-kernel@...r.kernel.org Subject: Re: [tip:x86/build] x86/build: Remove -Wno-sign-compare * Ingo Molnar <mingo@...nel.org> wrote: > Here's the full list of warnings for allmod64: > > make bzImage: > > include/linux/blkdev.h:624:26: warning: switch condition has boolean value [-Wswitch-bool] > ./arch/x86/include/asm/qspinlock.h:28:2: warning: implicit declaration of function ?pv_queued_spin_lock_slowpath? [-Wimplicit-function-declaration] > ./arch/x86/include/asm/qspinlock.h:33:2: warning: implicit declaration of function ?pv_queued_spin_unlock? [-Wimplicit-function-declaration] > ./arch/x86/include/asm/qspinlock.h:28:2: warning: implicit declaration of function ?pv_queued_spin_lock_slowpath? [-Wimplicit-function-declaration] > ./arch/x86/include/asm/qspinlock.h:33:2: warning: implicit declaration of function ?pv_queued_spin_unlock? [-Wimplicit-function-declaration] > ./arch/x86/include/asm/qspinlock.h:28:2: warning: implicit declaration of function ?pv_queued_spin_lock_slowpath? [-Wimplicit-function-declaration] > ./arch/x86/include/asm/qspinlock.h:33:2: warning: implicit declaration of function ?pv_queued_spin_unlock? [-Wimplicit-function-declaration] > ./arch/x86/include/asm/qspinlock.h:28:2: warning: implicit declaration of function ?pv_queued_spin_lock_slowpath? [-Wimplicit-function-declaration] > ./arch/x86/include/asm/qspinlock.h:33:2: warning: implicit declaration of function ?pv_queued_spin_unlock? [-Wimplicit-function-declaration] And that comes from tip:locking/core, but those warnings do not show up with GCC 4.9.2: so it's either a GCC 5.0.1 bug, or we missed something with the WIP queued pv spinlocks changes that newer GCC is able to notice. Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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