Re: [PATCH] x86_64: print processor number in show_regs

From: Zwane Mwaikambo
Date: Fri Jul 15 2005 - 06:10:46 EST


On Fri, 15 Jul 2005, Zwane Mwaikambo wrote:

> Up to date i've been using the GS value to determine the processor number
> in dumps from show_regs, however this can be cumbersome to do if you don't
> have the vmlinux to verify with the address of cpu_pda, how about the
> following? I considered using hard_smp_processor_id for robustness but we
> already dereference current so we're already relying on MSR_GS_BASE being
> sane.
>
> Signed-off-by: Zwane Mwaikambo <zwane@xxxxxxxxxxxxxxxx>

Sorry, i sent off an older patch, here is the correct one;

Index: linux-2.6.13-rc2-mm1/arch/x86_64/kernel/process.c
===================================================================
RCS file: /home/cvsroot/linux-2.6.13-rc2-mm1/arch/x86_64/kernel/process.c,v
retrieving revision 1.1.1.1
diff -u -p -B -r1.1.1.1 process.c
--- linux-2.6.13-rc2-mm1/arch/x86_64/kernel/process.c 10 Jul 2005 04:38:46 -0000 1.1.1.1
+++ linux-2.6.13-rc2-mm1/arch/x86_64/kernel/process.c 15 Jul 2005 11:00:28 -0000
@@ -311,6 +311,7 @@ void __show_regs(struct pt_regs * regs)

void show_regs(struct pt_regs *regs)
{
+ printk("CPU %d:", smp_processor_id());
__show_regs(regs);
show_trace(&regs->rsp);
}
-
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