From: Ingo Molnar <mingo@kernel.org>
To: Ido Yariv <ido@wizery.com>
Cc: hpa@zytor.com, linux-kernel@vger.kernel.org, shai@scalemp.com,
tglx@linutronix.de, linux-tip-commits@vger.kernel.org
Subject: Re: [tip:x86/platform] vsmp: Fix number of CPUs when vsmp is disabled
Date: Wed, 9 May 2012 11:12:12 +0200 [thread overview]
Message-ID: <20120509091212.GA8585@gmail.com> (raw)
In-Reply-To: <20120509080335.GA5556@NoteStation.colubris.lan>
* Ido Yariv <ido@wizery.com> wrote:
> Hi Ingo,
>
> On Tue, May 08, 2012 at 02:25:49PM +0200, Ingo Molnar wrote:
> >
> > On !CONFIG_SMP this produces the following build failure:
> >
> > arch/x86/kernel/vsmp_64.c:171:6: error: ‘setup_max_cpus’ undeclared (first use in this function)
> >
> > Do you want to keep vSMP on UP? If not then you could add a
> > 'depends on SMP' to the vSMP Kconfig entry, avoiding the whole
> > UP problem space.
>
> Oops, sorry for that.
>
> vsmp_64.c is built even if CONFIG_X86_VSMP is not set, so even
> if we set this dependency, it will not fix this issue.
Well, then fix the Makefile rule as well. Is there any point to
using vSMP specific glue on UP kernels?
> How about the following CONFIG_SMP check instead?
Looks pretty ugly, because it just increases the config jungle
instead of reducing it.
Thanks,
Ingo
next prev parent reply other threads:[~2012-05-09 9:12 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-06 12:39 [PATCH 1/2] vsmp: Fix number of CPUs when vsmp is disabled Ido Yariv
2012-04-06 12:39 ` [PATCH 2/2] vsmp: Ignore IOAPIC IRQ affinity if possible Ido Yariv
2012-04-16 7:39 ` [PATCH v2 1/2] vsmp: Fix number of CPUs when vsmp is disabled Ido Yariv
2012-04-16 7:39 ` [PATCH v2 2/2] vsmp: Ignore IOAPIC IRQ affinity if possible Ido Yariv
2012-05-07 13:19 ` Ingo Molnar
2012-05-08 0:53 ` Shai Fultheim (Shai@ScaleMP.com)
2012-05-09 9:18 ` Ingo Molnar
2012-05-09 21:21 ` Ido Yariv
2012-06-02 22:11 ` [PATCH 1/2] x86: Introduce apic post-initialization callback Ido Yariv
2012-06-02 22:11 ` [PATCH v3 2/2] vsmp: Ignore IOAPIC IRQ affinity if possible Ido Yariv
2012-06-06 15:02 ` [tip:x86/platform] x86/vsmp: " tip-bot for Ravikiran Thirumalai
2012-06-08 8:52 ` Ingo Molnar
2012-06-08 15:43 ` Ido Yariv
2012-06-11 8:58 ` Ingo Molnar
2012-06-11 19:41 ` Ido Yariv
2012-06-14 10:51 ` Ingo Molnar
2012-06-14 15:43 ` [PATCH] x86/vsmp: Fix linker error when CONFIG_PROC_FS is not set Ido Yariv
2012-06-15 14:22 ` [tip:x86/platform] " tip-bot for Ido Yariv
2012-06-06 15:01 ` [tip:x86/platform] x86/platform: Introduce APIC post-initialization callback tip-bot for Ido Yariv
2012-06-14 17:34 ` H. Peter Anvin
2012-06-15 14:33 ` Ido Yariv
2012-04-28 21:33 ` [PATCH v2 1/2] vsmp: Fix number of CPUs when vsmp is disabled Ido Yariv
2012-04-29 3:05 ` Shai Fultheim (Shai@ScaleMP.com)
2012-05-07 13:24 ` Ingo Molnar
2012-05-08 7:34 ` [PATCH v3] " Ido Yariv
2012-05-08 10:05 ` [tip:x86/platform] " tip-bot for Shai Fultheim
2012-05-08 12:25 ` Ingo Molnar
2012-05-09 8:03 ` Ido Yariv
2012-05-09 8:22 ` Ido Yariv
2012-05-09 8:28 ` [PATCH v4] " Ido Yariv
2012-05-09 15:44 ` Ingo Molnar
2012-05-09 15:55 ` H. Peter Anvin
2012-05-11 19:26 ` Ido Yariv
2012-05-12 1:20 ` Shai Fultheim (Shai@ScaleMP.com)
2012-05-09 9:12 ` Ingo Molnar [this message]
2012-05-09 15:27 ` [tip:x86/platform] " Shai Fultheim (Shai@ScaleMP.com)
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