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Message-Id: <1157065012.25808.5.camel@josh-work.beaverton.ibm.com>
Date: Thu, 31 Aug 2006 15:56:52 -0700
From: Josh Triplett <josht@...ibm.com>
To: linux-kernel@...r.kernel.org
Cc: Andrew Morton <akpm@...l.org>, Paul McKenney <paulmck@...ibm.com>,
Dipankar Sarma <dipankar@...ibm.com>
Subject: [PATCH 1/4] rcu: Refactor srcu_torture_deferred_free to work for
any implementation
Make srcu_torture_deferred_free use cur_ops->sync() so it will work for any
implementation. Move and rename it in preparation for use in the ops of other
implementations.
Signed-off-by: Josh Triplett <josh@...edesktop.org>
---
kernel/rcutorture.c | 53 ++++++++++++++++++++++++++++-----------------------
1 files changed, 29 insertions(+), 24 deletions(-)
diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c
index e045021..6e2f0a8 100644
--- a/kernel/rcutorture.c
+++ b/kernel/rcutorture.c
@@ -117,6 +117,7 @@ static atomic_t n_rcu_torture_alloc_fail
static atomic_t n_rcu_torture_free;
static atomic_t n_rcu_torture_mberror;
static atomic_t n_rcu_torture_error;
+static struct list_head rcu_torture_removed;
/*
* Allocate an element from the rcu_tortures pool.
@@ -270,6 +271,32 @@ static struct rcu_torture_ops rcu_ops =
.name = "rcu"
};
+static void rcu_sync_torture_deferred_free(struct rcu_torture *p)
+{
+ int i;
+ struct rcu_torture *rp;
+ struct rcu_torture *rp1;
+
+ cur_ops->sync();
+ list_add(&p->rtort_free, &rcu_torture_removed);
+ list_for_each_entry_safe(rp, rp1, &rcu_torture_removed, rtort_free) {
+ i = rp->rtort_pipe_count;
+ if (i > RCU_TORTURE_PIPE_LEN)
+ i = RCU_TORTURE_PIPE_LEN;
+ atomic_inc(&rcu_torture_wcount[i]);
+ if (++rp->rtort_pipe_count >= RCU_TORTURE_PIPE_LEN) {
+ rp->rtort_mbtest = 0;
+ list_del(&rp->rtort_free);
+ rcu_torture_free(rp);
+ }
+ }
+}
+
+static void rcu_sync_torture_init(void)
+{
+ INIT_LIST_HEAD(&rcu_torture_removed);
+}
+
/*
* Definitions for rcu_bh torture testing.
*/
@@ -335,12 +362,11 @@ static struct rcu_torture_ops rcu_bh_ops
*/
static struct srcu_struct srcu_ctl;
-static struct list_head srcu_removed;
static void srcu_torture_init(void)
{
init_srcu_struct(&srcu_ctl);
- INIT_LIST_HEAD(&srcu_removed);
+ rcu_sync_torture_init();
}
static void srcu_torture_cleanup(void)
@@ -377,27 +403,6 @@ static int srcu_torture_completed(void)
return srcu_batches_completed(&srcu_ctl);
}
-static void srcu_torture_deferred_free(struct rcu_torture *p)
-{
- int i;
- struct rcu_torture *rp;
- struct rcu_torture *rp1;
-
- synchronize_srcu(&srcu_ctl);
- list_add(&p->rtort_free, &srcu_removed);
- list_for_each_entry_safe(rp, rp1, &srcu_removed, rtort_free) {
- i = rp->rtort_pipe_count;
- if (i > RCU_TORTURE_PIPE_LEN)
- i = RCU_TORTURE_PIPE_LEN;
- atomic_inc(&rcu_torture_wcount[i]);
- if (++rp->rtort_pipe_count >= RCU_TORTURE_PIPE_LEN) {
- rp->rtort_mbtest = 0;
- list_del(&rp->rtort_free);
- rcu_torture_free(rp);
- }
- }
-}
-
static void srcu_torture_synchronize(void)
{
synchronize_srcu(&srcu_ctl);
@@ -427,7 +432,7 @@ static struct rcu_torture_ops srcu_ops =
.readdelay = srcu_read_delay,
.readunlock = srcu_torture_read_unlock,
.completed = srcu_torture_completed,
- .deferredfree = srcu_torture_deferred_free,
+ .deferredfree = rcu_sync_torture_deferred_free,
.sync = srcu_torture_synchronize,
.stats = srcu_torture_stats,
.name = "srcu"
--
1.4.1.1
-
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