From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mathieu Desnoyers Subject: Re: [RFC PATCH 1/9] powerpc: allocate sys_membarrier system call number Date: Mon, 31 Aug 2015 15:32:54 +0000 (UTC) Message-ID: <131898944.32688.1441035174419.JavaMail.zimbra@efficios.com> References: <1440698215-8355-1-git-send-email-mathieu.desnoyers@efficios.com> <1440698215-8355-2-git-send-email-mathieu.desnoyers@efficios.com> <1441004045.5735.8.camel@ellerman.id.au> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1441004045.5735.8.camel@ellerman.id.au> Sender: linux-kernel-owner@vger.kernel.org To: Michael Ellerman Cc: Andrew Morton , linux-api , linux-kernel@vger.kernel.org, Benjamin Herrenschmidt , Paul Mackerras , linuxppc-dev@lists.ozlabs.org List-Id: linux-api@vger.kernel.org ----- On Aug 31, 2015, at 2:54 AM, Michael Ellerman mpe@ellerman.id.au wrote: > On Thu, 2015-08-27 at 13:56 -0400, Mathieu Desnoyers wrote: >> Allow it to be used from SPU, since it should not have unwanted >> side-effects. >> >> [ Untested on this architecture. To try it out: fetch linux-next/akpm, >> apply this patch, build/run a membarrier-enabled kernel, and do make >> kselftest. ] >> >> Signed-off-by: Mathieu Desnoyers >> CC: Andrew Morton >> CC: linux-api@vger.kernel.org >> CC: Benjamin Herrenschmidt >> CC: Paul Mackerras >> CC: Michael Ellerman >> CC: linuxppc-dev@lists.ozlabs.org > > Thanks. > > I get: > > $ ./membarrier_test > membarrier MEMBARRIER_CMD_QUERY syscall available. > membarrier: MEMBARRIER_CMD_SHARED success. > membarrier: tests done! > > Which looks good. > > Assuming the membarrier support hits 4.3, I'll take this via my tree for 4.3 > also. Great! I'll take care of your comments about self-tests, Thanks, Mathieu -- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com