From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from imap.sh.mvista.com (unknown [63.81.120.155]) by ozlabs.org (Postfix) with ESMTP id 669D0DDD0A for ; Mon, 6 Aug 2007 00:10:59 +1000 (EST) Message-ID: <46B5DAE9.9060406@ru.mvista.com> Date: Sun, 05 Aug 2007 18:12:57 +0400 From: Sergei Shtylyov MIME-Version: 1.0 To: benh@kernel.crashing.org Subject: Re: [patch 06/10] 40x decrementer fixes References: <20070803160900.069522000@linux.vnet.ibm.com> > <20070803161710.931656000@linux.vnet.ibm.com> > <46B35C07.4090806@ru.mvista.com> <46B3617B.10509@ru.mvista.com> <1186194537.5733.4.camel@gruick> In-Reply-To: <1186194537.5733.4.camel@gruick> Content-Type: text/plain; charset=us-ascii; format=flowed Cc: linuxppc-dev@ozlabs.org, paulus@samba.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hello. Benjamin Herrenschmidt wrote: >>> Why bother doing this?! This will only warrant you imprecise decrementer >>>interrupts while it should be interrupting at the precise period currently (if >>>you load PIT once)... >> >> I.e. the error will only accumulate. NAK. > No, it won't since the timebase is always used as the reference. I meant the error in the interrupt period itself (I know that this gets accounted for) but that was a thinko anyway... > Ben. WBR, Sergei