Messages in this thread | | | From | Linus Torvalds <> | Date | Wed, 13 Jul 2011 13:49:06 -0700 | Subject | Re: [PATCH] x86 intel power: Initialize MSR_IA32_ENERGY_PERF_BIAS |
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Ack. Let's just do this. Ingo?
Linus
On Wed, Jul 13, 2011 at 1:44 PM, Len Brown <lenb@kernel.org> wrote: > >> So how about informing users, how about making it non-silent? An informative >> printk that also mentions the power configuration tool, etc. This solves the >> concerns i mentioned. > > Something like this? > > rdmsrl(MSR_IA32_ENERGY_PERF_BIAS, epb); > if ((epb & 0xF) == 0) { > printk_once(KERN_WARN, "x86: updated energy_perf_bias" > " to 'normal' from 'performance'\n" > "You can view and update epb via utility," > " such as x86_energy_perf_policy(8)\n"); > epb = (epb & ~0xF) | ENERGY_PERF_BIAS_NORMAL; > wrmsrl(MSR_IA32_ENERGY_PERF_BIAS, epb); > } > > -- 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/
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