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[PATCH] rcu: add rcu_bh_sync torture type to rcutorture 

Use the newly-generic synchronous deferred free function to implement torture
testing for rcu_bh using synchronize_rcu_bh rather than the asynchronous
call_rcu_bh.

Signed-off-by: Josh Triplett <josh@freedesktop.org>
Acked-by: Paul E. McKenney <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Josh Triplett 2006-10-04 02:17:16 -07:00 committed by Linus Torvalds
parent 20d2e4283a
commit 11a147013e
2 changed files with 18 additions and 3 deletions
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5
Documentation/RCU/torture.txt
View File

@ -55,8 +55,9 @@ test_no_idle_hz Whether or not to test the ability of RCU to operate in
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.
"rcu_bh" for the rcu_read_lock_bh() API, "rcu_bh_sync" for
rcu_read_lock_bh() with synchronous reclamation, and "srcu"
for the "srcu_read_lock()" API.
verbose Enable debug printk()s. Default is disabled.

16
kernel/rcutorture.c
View File

@ -370,6 +370,19 @@ static struct rcu_torture_ops rcu_bh_ops = {
.name = "rcu_bh"
};
static struct rcu_torture_ops rcu_bh_sync_ops = {
.init = rcu_sync_torture_init,
.cleanup = NULL,
.readlock = rcu_bh_torture_read_lock,
.readdelay = rcu_read_delay, /* just reuse rcu's version. */
.readunlock = rcu_bh_torture_read_unlock,
.completed = rcu_bh_torture_completed,
.deferredfree = rcu_sync_torture_deferred_free,
.sync = rcu_bh_torture_synchronize,
.stats = NULL,
.name = "rcu_bh_sync"
};
/*
* Definitions for srcu torture testing.
*/
@ -452,7 +465,8 @@ static struct rcu_torture_ops srcu_ops = {
};
static struct rcu_torture_ops *torture_ops[] =
{ &rcu_ops, &rcu_sync_ops, &rcu_bh_ops, &srcu_ops, NULL };
{ &rcu_ops, &rcu_sync_ops, &rcu_bh_ops, &rcu_bh_sync_ops, &srcu_ops,
NULL };
/*
* RCU torture writer kthread. Repeatedly substitutes a new structure