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| author | Josh Triplett <josht@us.ibm.com> | 2006-10-04 02:17:15 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-04 07:55:31 -0700 |
| commit | 20d2e4283a97665a3db78c60dfa342a0c7c1b180 (patch) | |
| tree | 25bb664ab495fe4afcf9b2f85e438a437af0f85c | |
| parent | e3033736581f125ba5fd6c0760e0d430d54fb5c0 (diff) | |
| download | lwn-20d2e4283a97665a3db78c60dfa342a0c7c1b180.tar.gz lwn-20d2e4283a97665a3db78c60dfa342a0c7c1b180.zip | |
[PATCH] rcu: add rcu_sync torture type to rcutorture
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 <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>
| -rw-r--r-- | Documentation/RCU/torture.txt | 7 | ||||
| -rw-r--r-- | kernel/rcutorture.c | 17 |
2 files changed, 19 insertions, 5 deletions
diff --git a/Documentation/RCU/torture.txt b/Documentation/RCU/torture.txt index 2180ef93accc..6714b5361158 100644 --- a/Documentation/RCU/torture.txt +++ b/Documentation/RCU/torture.txt @@ -53,9 +53,10 @@ test_no_idle_hz Whether or not to test the ability of RCU to operate in 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 6e2f0a8344c2..1c329df60bcc 100644 --- a/kernel/rcutorture.c +++ b/kernel/rcutorture.c @@ -58,7 +58,7 @@ static int stat_interval; /* Interval between stats, in seconds. */ 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 |