Messages in this thread | | | Date | Wed, 19 Sep 2012 12:52:27 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH] x86: Dump family, model, stepping of the BSP |
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On Fri, Sep 14, 2012 at 06:37:46PM +0200, Borislav Petkov wrote: > From: Borislav Petkov <borislav.petkov@amd.com> > > When acting on a user bug report, we find ourselves constantly asking > for /proc/cpuinfo in order to know the exact family, model, stepping of > the CPU in question. Instead of having to ask this, add this to dmesg > so that it is visible and no ambiguities can ensue from looking at the > official name string of the CPU coming from CPUID and trying to map it > to f/m/s. > > Output then looks like this: > > [ 0.146041] smpboot: CPU0: AMD FX(tm)-8100 Eight-Core Processor (fam: 15 model: 01 stepping: 02)
Guys, any comments on this one? I think dumping the f/m/s is very helpful.
Thanks.
> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> > --- > arch/x86/kernel/cpu/common.c | 8 +++++--- > 1 file changed, 5 insertions(+), 3 deletions(-) > > diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c > index 2ea24da6f7fb..90f7f8f9212f 100644 > --- a/arch/x86/kernel/cpu/common.c > +++ b/arch/x86/kernel/cpu/common.c > @@ -1022,14 +1022,16 @@ void __cpuinit print_cpu_info(struct cpuinfo_x86 *c) > printk(KERN_CONT "%s ", vendor); > > if (c->x86_model_id[0]) > - printk(KERN_CONT "%s", c->x86_model_id); > + printk(KERN_CONT "%s", strim(c->x86_model_id)); > else > printk(KERN_CONT "%d86", c->x86); > > + printk(KERN_CONT " (fam: %02x model: %02x", c->x86, c->x86_model); > + > if (c->x86_mask || c->cpuid_level >= 0) > - printk(KERN_CONT " stepping %02x\n", c->x86_mask); > + printk(KERN_CONT " stepping: %02x)\n", c->x86_mask); > else > - printk(KERN_CONT "\n"); > + printk(KERN_CONT ")\n"); > > print_cpu_msr(c); > } > -- > 1.7.11.rc1 > >
-- Regards/Gruss, Boris.
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