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Date: Mon, 28 Jul 2014 10:11:37 -0400 From: "Frank Ch. Eigler" <fche@...hat.com> To: "Theodore Ts'o" <tytso@....edu>, Linus Torvalds <torvalds@...ux-foundation.org>, Markus Trippelsdorf <markus@...ppelsdorf.de>, Steven Rostedt <rostedt@...dmis.org>, Alexei Starovoitov <ast@...nel.org>, =?UTF-8?Q?Michel_D=C3=A4nzer?= <michel@...nzer.net>, Jakub Jelinek <jakub@...hat.com>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Debian GCC Maintainers <debian-gcc@...ts.debian.org>, Debian Kernel Team <debian-kernel@...ts.debian.org> Subject: Re: Random panic in load_balance() with 3.16-rc Hi - On Mon, Jul 28, 2014 at 09:10:04AM -0400, Theodore Ts'o wrote: > [...] > I thought Markus told us that -fno-var-tracking-assignments makes > absolutely no difference for non-debug kernels? It does affect CONFIG_DEBUG_INFO kernels, and that config option is set for all Red Hat kernels (-debug or plain). > [...] Is there some equivalent signalling system that gcc could use > [...] I'm not aware of anything trivial like a gcc --report-fixed-PRs kind of thing. But, kbuild could conceivably have a run-time test involving test-running gcc with in that compare-debug mode with a suitable test case. We use the latter technique in systemtap for auto-configuring to kernel versions/features; we got the $(CHECK_BUILD) trick from vmware module makefiles. It could be recast as a variant of $(cc-option ...). - FChE -- 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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