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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Mon, 25 Feb 2019 21:12:51 -0000 Received: from b01ledav003.gho.pok.ibm.com (b01ledav003.gho.pok.ibm.com [9.57.199.108]) by b01cxnp23034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x1PLCorj18808996 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 25 Feb 2019 21:12:50 GMT Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6C170B2066; Mon, 25 Feb 2019 21:12:50 +0000 (GMT) Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 48BE4B205F; Mon, 25 Feb 2019 21:12:50 +0000 (GMT) Received: from paulmck-ThinkPad-W541 (unknown [9.70.82.188]) by b01ledav003.gho.pok.ibm.com (Postfix) with ESMTP; Mon, 25 Feb 2019 21:12:50 +0000 (GMT) Received: by paulmck-ThinkPad-W541 (Postfix, from userid 1000) id 6E1DE16C1510; Mon, 25 Feb 2019 13:12:50 -0800 (PST) Date: Mon, 25 Feb 2019 13:12:50 -0800 From: "Paul E. McKenney" To: "Joel Fernandes (Google)" Cc: linux-kernel@vger.kernel.org, Alexei Starovoitov , Christian Brauner , Daniel Borkmann , David Ahern , "David S. Miller" , Ingo Molnar , Jakub Kicinski , Jeff Kirsher , Jesper Dangaard Brouer , John Fastabend , Josh Triplett , keescook@chromium.org, kernel-hardening@lists.openwall.com, kernel-team@android.com, Kirill Tkhai , Lai Jiangshan , Martin KaFai Lau , Mathieu Desnoyers , netdev@vger.kernel.org, Peter Zijlstra , Quentin Perret , rcu@vger.kernel.org, Song Liu , Steven Rostedt , Vincent Guittot , xdp-newbies@vger.kernel.org, Yonghong Song Subject: Re: [PATCH v2 6/6] sched: Annotate perf_domain pointer with __rcu Reply-To: paulmck@linux.ibm.com References: <20190223063434.6793-1-joel@joelfernandes.org> <20190223063434.6793-7-joel@joelfernandes.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190223063434.6793-7-joel@joelfernandes.org> User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-GCONF: 00 x-cbid: 19022521-0072-0000-0000-0000040007A1 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00010663; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000281; SDB=6.01166318; UDB=6.00609217; IPR=6.00946921; MB=3.00025738; MTD=3.00000008; XFM=3.00000015; UTC=2019-02-25 21:12:57 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19022521-0073-0000-0000-00004B4CB56B Message-Id: <20190225211250.GA4072@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-02-25_11:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1902250151 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Sat, Feb 23, 2019 at 01:34:34AM -0500, Joel Fernandes (Google) wrote: > This fixes the following sparse errors in sched/fair.c: > > fair.c:6506:14: error: incompatible types in comparison expression > fair.c:8642:21: error: incompatible types in comparison expression > > Using __rcu will also help sparse catch any future bugs. > > Signed-off-by: Joel Fernandes (Google) >From an RCU perspective: Reviewed-by: Paul E. McKenney > --- > kernel/sched/sched.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h > index ca6a79f57e7a..c8e6514433a9 100644 > --- a/kernel/sched/sched.h > +++ b/kernel/sched/sched.h > @@ -780,7 +780,7 @@ struct root_domain { > * NULL-terminated list of performance domains intersecting with the > * CPUs of the rd. Protected by RCU. > */ > - struct perf_domain *pd; > + struct perf_domain __rcu *pd; > }; > > extern struct root_domain def_root_domain; > -- > 2.21.0.rc0.258.g878e2cd30e-goog >