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Date: Thu, 07 Jan 2010 11:22:44 -0800 From: "Justin P. Mattock" <justinmattock@...il.com> To: Andi Kleen <andi@...stfloor.org> CC: Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: [bisected] sys_paccept: disable paccept() causes my macbook pro to have an annoying whining sound On 01/07/10 08:02, Andi Kleen wrote: o.k. so using the boot param with the latest kernel takes care of the noise. Now as a test I did git reset --hard origin 2d4c8266 to where the bisect was pointing too. then once booting the noise was there. Then reverting that commit, caused the system to be noiseless.. My guess since this might be power related it could be anything(sys_paccept hit it just right) i.g. whatever sys_paccept does(when turned on) generates enough wakeups(if this is correct term), to keep the system from generating this noise at the certain C level or however/whatever it's doing. At this point I'm not sure what to really do. if using the boot param(max_cstate) is a safe option then I'll just use that and/or look at paccept/accept4 to see what really generates enough wakeups or keeps the processor at a level to keep the noise from generating. Justin P. Mattock -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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