lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Message-ID: <20151007120337.GL11639@twins.programming.kicks-ass.net> Date: Wed, 7 Oct 2015 14:03:37 +0200 From: Peter Zijlstra <peterz@...radead.org> To: Mathieu Desnoyers <mathieu.desnoyers@...icios.com> Cc: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>, linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>, Lai Jiangshan <jiangshanlai@...il.com>, dipankar@...ibm.com, Andrew Morton <akpm@...ux-foundation.org>, josh@...htriplett.org, Thomas Gleixner <tglx@...utronix.de>, rostedt <rostedt@...dmis.org>, dhowells@...hat.com, edumazet@...gle.com, dvhart@...ux.intel.com, fweisbec@...il.com, oleg@...hat.com, bobby prani <bobby.prani@...il.com> Subject: Re: [PATCH tip/core/rcu 02/18] rcu: Move rcu_report_exp_rnp() to allow consolidation On Wed, Oct 07, 2015 at 01:50:46PM +0200, Peter Zijlstra wrote: > @@ -1512,10 +1554,8 @@ rcu_start_future_gp(struct rcu_node *rnp, struct rcu_data *rdp, > * hold it, acquire the root rcu_node structure's lock in order to > * start one (if needed). > */ > - if (rnp != rnp_root) { > - raw_spin_lock(&rnp_root->lock); > - smp_mb__after_unlock_lock(); > - } > + if (rnp != rnp_root) > + raw_spin_lock_rcu_node(rnp); rnp_root > @@ -2312,8 +2343,7 @@ static void rcu_report_unblock_qs_rnp(struct rcu_state *rsp, > gps = rnp->gpnum; > mask = rnp->grpmask; > raw_spin_unlock(&rnp->lock); /* irqs remain disabled. */ > - raw_spin_lock(&rnp_p->lock); /* irqs already disabled. */ > - smp_mb__after_unlock_lock(); > + raw_spin_lock_rcu_node(rnp); /* irqs already disabled. */ rnp_p -- 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/
Powered by blists - more mailing lists