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Message-ID: <565439FB.6050800@suse.com> Date: Tue, 24 Nov 2015 11:20:43 +0100 From: Michal Marek <mmarek@...e.com> To: Arnd Bergmann <arnd@...db.de> Cc: linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org, linux-arm-kernel@...ts.infradead.org Subject: Re: [PATCH] Kbuild: disable 'maybe-uninitialized' warning for CONFIG_PROFILE_ALL_BRANCHES On 2015-11-23 17:26, Arnd Bergmann wrote: > These are all false positives that either rob someone's time when trying > to figure out whether they are real, or they get people to send wrong > patches to shut up the warnings. [...] > diff --git a/Makefile b/Makefile > index 5e01a416c6e4..f8b921658f29 100644 > --- a/Makefile > +++ b/Makefile > @@ -626,7 +626,11 @@ KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) > ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE > KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) > else > -KBUILD_CFLAGS += -O2 > +ifdef CONFIG_PROFILE_ALL_BRANCHES > +KBUILD_CFLAGS += -O2 $(call cc-disable-warning,maybe-uninitialized,) > +else > +KBUILD_CFLAGS += -O2 > +endif Does it only happen with -O2? Normally, we would add it outside the ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE. Michal -- 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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