linux-kernel - Re: build issue #380 for v2.6.26-rc1-279-g28a4acb : mach-voyager: multiple definition of `phys_cpu_present

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Date:	Fri, 09 May 2008 09:22:26 -0500
From:	James Bottomley <James.Bottomley@...senPartnership.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	WANG Cong <xiyou.wangcong@...il.com>, toralf.foerster@....de,
	linux-kernel@...r.kernel.org, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Mike Travis <travis@....com>
Subject: Re: build issue #380 for v2.6.26-rc1-279-g28a4acb : mach-voyager:
	multiple definition of `phys_cpu_present_map'

On Fri, 2008-05-09 at 11:58 +0200, Ingo Molnar wrote:
> * WANG Cong <xiyou.wangcong@...il.com> wrote:
> 
> > Sorry. Ignore previous one. This one should be correct, I think.
> > 
> > ---
> > 
> > diff --git a/arch/x86/mach-voyager/voyager_smp.c b/arch/x86/mach-voyager/voyager_smp.c
> > index 8acbf0c..2e8388b 100644
> > --- a/arch/x86/mach-voyager/voyager_smp.c
> > +++ b/arch/x86/mach-voyager/voyager_smp.c
> > @@ -74,7 +74,7 @@ EXPORT_SYMBOL(cpu_online_map);
> >  
> >  /* Bitmask of CPUs present in the system - exported by i386_syms.c, used
> >   * by scheduler but indexed physically */
> > -cpumask_t phys_cpu_present_map = CPU_MASK_NONE;
> > +static cpumask_t phys_cpu_present_map = CPU_MASK_NONE;
> 
> i've got the one below queued up but it's stalled as it could easily be 
> wrong and there's no ack from James yet and there's been discussion back 
> and forth. James, what do you suggest?
> 
> 	Ingo
> 
> -------------------->
> Subject: x86, voyager: build fix
> From: Ingo Molnar <mingo@...e.hu>
> Date: Sun May 04 23:56:30 CEST 2008
> 
> Signed-off-by: Ingo Molnar <mingo@...e.hu>
> ---
>  arch/x86/mach-voyager/voyager_smp.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> Index: linux-x86.q/arch/x86/mach-voyager/voyager_smp.c
> ===================================================================
> --- linux-x86.q.orig/arch/x86/mach-voyager/voyager_smp.c
> +++ linux-x86.q/arch/x86/mach-voyager/voyager_smp.c
> @@ -74,7 +74,7 @@ EXPORT_SYMBOL(cpu_online_map);
>  
>  /* Bitmask of CPUs present in the system - exported by i386_syms.c, used
>   * by scheduler but indexed physically */
> -cpumask_t phys_cpu_present_map = CPU_MASK_NONE;
> +extern cpumask_t phys_cpu_present_map;
>  
>  /* The internal functions */
>  static void send_CPI(__u32 cpuset, __u8 cpi)

I already told you that this was incorrect.  This is what I sent as the
replacement on 28 April and I didn't hear back from you.

http://marc.info/?l=linux-kernel&m=120941111400620

James

---

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index c0c68c1..808daf1 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -12,6 +12,7 @@
 #include <asm/mpspec.h>
 #include <asm/apicdef.h>
 
+#ifdef CONFIG_X86_MPPARSE
 unsigned int num_processors;
 unsigned disabled_cpus __cpuinitdata;
 /* Processor that is doing the boot up */
@@ -23,8 +24,9 @@ EXPORT_PER_CPU_SYMBOL(x86_cpu_to_apicid);
 
 /* Bitmask of physically existing CPUs */
 physid_mask_t phys_cpu_present_map;
+#endif
 
-#if defined(CONFIG_HAVE_SETUP_PER_CPU_AREA) && defined(CONFIG_SMP)
+#if defined(CONFIG_HAVE_SETUP_PER_CPU_AREA) && defined(CONFIG_X86_SMP)
 /*
  * Copy data used in early init routines from the initial arrays to the
  * per cpu data areas.  These arrays then become expendable and the



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