From: Christian Kujau <lists@nerdbynature.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: linuxppc-dev@lists.ozlabs.org, benh@kernel.crashing.org
Subject: Re: error: 'cpus_in_crash' defined but not used
Date: Fri, 20 Jan 2012 16:45:38 -0800 (PST) [thread overview]
Message-ID: <alpine.DEB.2.01.1201201642580.2895@trent.utfs.org> (raw)
In-Reply-To: <alpine.DEB.2.01.1201172104410.2895@trent.utfs.org>
> On Tue, 17 Jan 2012 at 20:13, Christian Kujau wrote:
> >
> > compiling today's git (mainline, a25a2b8) on powerpc32 gives:
> >
> > CC arch/powerpc/kernel/crash.o
> > cc1: warnings being treated as errors
> > /usr/local/src/linux-2.6-git/arch/powerpc/kernel/crash.c:49: error:
> > ‘cpus_in_crash’ defined but not used
> > make[2]: *** [arch/powerpc/kernel/crash.o] Error 1
> > make[1]: *** [arch/powerpc/kernel] Error 2
> > make: *** [sub-make] Error 2
This still happens in 3.3.0-rc1 and is fixed by the patch below.
.config is here: http://nerdbynature.de/bits/3.2.0/
Thoughts?
Thanks,
Christian.
> I could not find cpus_in_crash anywhere in the sourcetree, except for
> arch/powerpc/kernel/crash.c. Moving the definition into the CONFIG_SMP
> ifdef helps on my UP system, of course - not sure about other machines
> though:
>
> diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c
> index 28be345..abef751 100644
> --- a/arch/powerpc/kernel/crash.c
> +++ b/arch/powerpc/kernel/crash.c
> @@ -46,7 +46,6 @@
>
> /* This keeps a track of which one is the crashing cpu. */
> int crashing_cpu = -1;
> -static atomic_t cpus_in_crash;
> static int time_to_dump;
>
> #define CRASH_HANDLER_MAX 3
> @@ -66,6 +65,7 @@ static int handle_fault(struct pt_regs *regs)
>
> #ifdef CONFIG_SMP
>
> +static atomic_t cpus_in_crash;
> void crash_ipi_callback(struct pt_regs *regs)
> {
> static cpumask_t cpus_state_saved = CPU_MASK_NONE;
>
>
> Christian.
> --
> BOFH excuse #272:
>
> Netscape has crashed
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>
--
BOFH excuse #51:
Cosmic ray particles crashed through the hard disk platter
next prev parent reply other threads:[~2012-01-21 0:45 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-18 4:13 error: ‘cpus_in_crash’ defined but not used Christian Kujau
2012-01-18 5:13 ` error: 'cpus_in_crash' " Christian Kujau
2012-01-21 0:45 ` Christian Kujau [this message]
2012-01-24 23:18 ` Benjamin Herrenschmidt
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