Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932475AbWHaW4s (ORCPT ); Thu, 31 Aug 2006 18:56:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932476AbWHaW4s (ORCPT ); Thu, 31 Aug 2006 18:56:48 -0400 Received: from e32.co.us.ibm.com ([32.97.110.150]:48553 "EHLO e32.co.us.ibm.com") by vger.kernel.org with ESMTP id S932475AbWHaW4r (ORCPT ); Thu, 31 Aug 2006 18:56:47 -0400 Subject: [PATCH 2/4] rcu: Add rcu_sync torture type to rcutorture From: Josh Triplett To: linux-kernel@vger.kernel.org Cc: Andrew Morton , Paul McKenney , Dipankar Sarma Content-Type: text/plain Date: Thu, 31 Aug 2006 15:56:54 -0700 Message-Id: <1157065014.25808.7.camel@josh-work.beaverton.ibm.com> Mime-Version: 1.0 X-Mailer: Evolution 2.6.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2915 Lines: 78 Use the newly-generic synchronous deferred free function to implement torture testing for RCU using synchronize_rcu rather than the asynchronous call_rcu. Signed-off-by: Josh Triplett --- Documentation/RCU/torture.txt | 7 ++++--- kernel/rcutorture.c | 17 +++++++++++++++-- 2 files changed, 19 insertions(+), 5 deletions(-) diff --git a/Documentation/RCU/torture.txt b/Documentation/RCU/torture.txt index 2180ef9..6714b53 100644 --- a/Documentation/RCU/torture.txt +++ b/Documentation/RCU/torture.txt @@ -53,9 +53,10 @@ test_no_idle_hz Whether or not to test t a kernel that disables the scheduling-clock interrupt to idle CPUs. Boolean parameter, "1" to test, "0" otherwise. -torture_type The type of RCU to test: "rcu" for the rcu_read_lock() - API, "rcu_bh" for the rcu_read_lock_bh() API, and "srcu" - for the "srcu_read_lock()" API. +torture_type The type of RCU to test: "rcu" for the rcu_read_lock() API, + "rcu_sync" for rcu_read_lock() with synchronous reclamation, + "rcu_bh" for the rcu_read_lock_bh() API, and "srcu" for the + "srcu_read_lock()" API. verbose Enable debug printk()s. Default is disabled. diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c index 6e2f0a8..1c329df 100644 --- a/kernel/rcutorture.c +++ b/kernel/rcutorture.c @@ -58,7 +58,7 @@ static int stat_interval; /* Interval be static int verbose; /* Print more debug info. */ static int test_no_idle_hz; /* Test RCU's support for tickless idle CPUs. */ static int shuffle_interval = 5; /* Interval between shuffles (in sec)*/ -static char *torture_type = "rcu"; /* What to torture: rcu, rcu_bh, srcu. */ +static char *torture_type = "rcu"; /* What RCU implementation to torture. */ module_param(nreaders, int, 0); MODULE_PARM_DESC(nreaders, "Number of RCU reader threads"); @@ -297,6 +297,19 @@ static void rcu_sync_torture_init(void) INIT_LIST_HEAD(&rcu_torture_removed); } +static struct rcu_torture_ops rcu_sync_ops = { + .init = rcu_sync_torture_init, + .cleanup = NULL, + .readlock = rcu_torture_read_lock, + .readdelay = rcu_read_delay, + .readunlock = rcu_torture_read_unlock, + .completed = rcu_torture_completed, + .deferredfree = rcu_sync_torture_deferred_free, + .sync = synchronize_rcu, + .stats = NULL, + .name = "rcu_sync" +}; + /* * Definitions for rcu_bh torture testing. */ @@ -439,7 +452,7 @@ static struct rcu_torture_ops srcu_ops = }; static struct rcu_torture_ops *torture_ops[] = - { &rcu_ops, &rcu_bh_ops, &srcu_ops, NULL }; + { &rcu_ops, &rcu_sync_ops, &rcu_bh_ops, &srcu_ops, NULL }; /* * RCU torture writer kthread. Repeatedly substitutes a new structure -- 1.4.1.1 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/