From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35467) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WRHmK-0003n0-3v for qemu-devel@nongnu.org; Sat, 22 Mar 2014 04:59:49 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WRHmE-0002LX-Ut for qemu-devel@nongnu.org; Sat, 22 Mar 2014 04:59:44 -0400 Received: from mail-ee0-x233.google.com ([2a00:1450:4013:c00::233]:60498) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WRHmE-0002LM-NY for qemu-devel@nongnu.org; Sat, 22 Mar 2014 04:59:38 -0400 Received: by mail-ee0-f51.google.com with SMTP id c13so2591599eek.10 for ; Sat, 22 Mar 2014 01:59:37 -0700 (PDT) Sender: Paolo Bonzini Message-ID: <532D50F6.4040407@redhat.com> Date: Sat, 22 Mar 2014 09:59:34 +0100 From: Paolo Bonzini MIME-Version: 1.0 References: <1395429454-24690-1-git-send-email-fred.konrad@greensocs.com> <1395429454-24690-5-git-send-email-fred.konrad@greensocs.com> In-Reply-To: <1395429454-24690-5-git-send-email-fred.konrad@greensocs.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [RFC PATCH 04/12] icount: introduce icount timer. List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: fred.konrad@greensocs.com, qemu-devel@nongnu.org Cc: mark.burton@greensocs.com Il 21/03/2014 20:17, fred.konrad@greensocs.com ha scritto: > @@ -154,7 +159,20 @@ int64_t cpu_get_icount(void) > > do { > start = seqlock_read_begin(&timers_state.vm_clock_seqlock); > - icount = cpu_get_icount_locked(); > + icount = cpu_get_icount_locked(true); > + } while (seqlock_read_retry(&timers_state.vm_clock_seqlock, start)); > + > + return icount; > +} > + > +int64_t cpu_get_icount_wo_bias(void) > +{ > + int64_t icount; > + unsigned start; > + > + do { > + start = seqlock_read_begin(&timers_state.vm_clock_seqlock); > + icount = cpu_get_icount_locked(false); > } while (seqlock_read_retry(&timers_state.vm_clock_seqlock, start)); Why not add an argument to cpu_get_icount() as well? Paolo