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| author | Paul E. McKenney <paulmck@kernel.org> | 2020-03-03 15:02:50 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2020-04-27 11:03:51 -0700 |
| commit | 3d6e43c75d6bab212e8bc142585ee36eb8e2e5d9 (patch) | |
| tree | ad0e43a904b44582d379e3de14759aaf4f1ffdf8 /kernel/rcu | |
| parent | c84aad765406c4c7573ce449e8a9977ebb8f4cb9 (diff) | |
| download | lwn-3d6e43c75d6bab212e8bc142585ee36eb8e2e5d9.tar.gz lwn-3d6e43c75d6bab212e8bc142585ee36eb8e2e5d9.zip | |
rcutorture: Add torture tests for RCU Tasks Rude
This commit adds the definitions required to torture the rude flavor of
RCU tasks.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/Kconfig.debug | 2 | ||||
| -rw-r--r-- | kernel/rcu/rcu.h | 1 | ||||
| -rw-r--r-- | kernel/rcu/rcutorture.c | 31 |
3 files changed, 32 insertions, 2 deletions
diff --git a/kernel/rcu/Kconfig.debug b/kernel/rcu/Kconfig.debug index 4aa02eee8f6c..b5f3545b0cfb 100644 --- a/kernel/rcu/Kconfig.debug +++ b/kernel/rcu/Kconfig.debug @@ -29,6 +29,7 @@ config RCU_PERF_TEST select TORTURE_TEST select SRCU select TASKS_RCU + select TASKS_RUDE_RCU default n help This option provides a kernel module that runs performance @@ -46,6 +47,7 @@ config RCU_TORTURE_TEST select TORTURE_TEST select SRCU select TASKS_RCU + select TASKS_RUDE_RCU default n help This option provides a kernel module that runs torture tests diff --git a/kernel/rcu/rcu.h b/kernel/rcu/rcu.h index 00ddc92c5774..c5746202e124 100644 --- a/kernel/rcu/rcu.h +++ b/kernel/rcu/rcu.h @@ -441,6 +441,7 @@ void rcu_request_urgent_qs_task(struct task_struct *t); enum rcutorture_type { RCU_FLAVOR, RCU_TASKS_FLAVOR, + RCU_TASKS_RUDE_FLAVOR, RCU_TRIVIAL_FLAVOR, SRCU_FLAVOR, INVALID_RCU_FLAVOR diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index fbb3e6247443..6b0663801a82 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -730,6 +730,33 @@ static struct rcu_torture_ops trivial_ops = { .name = "trivial" }; +/* + * Definitions for rude RCU-tasks torture testing. + */ + +static void rcu_tasks_rude_torture_deferred_free(struct rcu_torture *p) +{ + call_rcu_tasks_rude(&p->rtort_rcu, rcu_torture_cb); +} + +static struct rcu_torture_ops tasks_rude_ops = { + .ttype = RCU_TASKS_RUDE_FLAVOR, + .init = rcu_sync_torture_init, + .readlock = rcu_torture_read_lock_trivial, + .read_delay = rcu_read_delay, /* just reuse rcu's version. */ + .readunlock = rcu_torture_read_unlock_trivial, + .get_gp_seq = rcu_no_completed, + .deferred_free = rcu_tasks_rude_torture_deferred_free, + .sync = synchronize_rcu_tasks_rude, + .exp_sync = synchronize_rcu_tasks_rude, + .call = call_rcu_tasks_rude, + .cb_barrier = rcu_barrier_tasks_rude, + .fqs = NULL, + .stats = NULL, + .irq_capable = 1, + .name = "tasks-rude" +}; + static unsigned long rcutorture_seq_diff(unsigned long new, unsigned long old) { if (!cur_ops->gp_diff) @@ -739,7 +766,7 @@ static unsigned long rcutorture_seq_diff(unsigned long new, unsigned long old) static bool __maybe_unused torturing_tasks(void) { - return cur_ops == &tasks_ops; + return cur_ops == &tasks_ops || cur_ops == &tasks_rude_ops; } /* @@ -2413,7 +2440,7 @@ rcu_torture_init(void) int firsterr = 0; static struct rcu_torture_ops *torture_ops[] = { &rcu_ops, &rcu_busted_ops, &srcu_ops, &srcud_ops, - &busted_srcud_ops, &tasks_ops, &trivial_ops, + &busted_srcud_ops, &tasks_ops, &tasks_rude_ops, &trivial_ops, }; if (!torture_init_begin(torture_type, verbose)) |