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author | Ingo Molnar <mingo@kernel.org> | 2018-12-04 07:52:30 +0100 |
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committer | Ingo Molnar <mingo@kernel.org> | 2018-12-04 07:52:30 +0100 |
commit | 4bbfd7467cfc7d42e18d3008fa6a28ffd56e901a (patch) | |
tree | 3b6d27e740976d0393fd13ae675ae6a0e07812a9 /kernel/torture.c | |
parent | Linux 4.20-rc5 (diff) | |
parent | rcutorture: Don't do busted forward-progress testing (diff) | |
download | linux-dev-4bbfd7467cfc7d42e18d3008fa6a28ffd56e901a.tar.xz linux-dev-4bbfd7467cfc7d42e18d3008fa6a28ffd56e901a.zip |
Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU changes from Paul E. McKenney:
- Convert RCU's BUG_ON() and similar calls to WARN_ON() and similar.
- Replace calls of RCU-bh and RCU-sched update-side functions
to their vanilla RCU counterparts. This series is a step
towards complete removal of the RCU-bh and RCU-sched update-side
functions.
( Note that some of these conversions are going upstream via their
respective maintainers. )
- Documentation updates, including a number of flavor-consolidation
updates from Joel Fernandes.
- Miscellaneous fixes.
- Automate generation of the initrd filesystem used for
rcutorture testing.
- Convert spin_is_locked() assertions to instead use lockdep.
( Note that some of these conversions are going upstream via their
respective maintainers. )
- SRCU updates, especially including a fix from Dennis Krein
for a bag-on-head-class bug.
- RCU torture-test updates.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/torture.c')
-rw-r--r-- | kernel/torture.c | 34 |
1 files changed, 20 insertions, 14 deletions
diff --git a/kernel/torture.c b/kernel/torture.c index 17d91f5fba2a..bbf6d473e50c 100644 --- a/kernel/torture.c +++ b/kernel/torture.c @@ -194,11 +194,23 @@ torture_onoff(void *arg) int cpu; int maxcpu = -1; DEFINE_TORTURE_RANDOM(rand); + int ret; VERBOSE_TOROUT_STRING("torture_onoff task started"); for_each_online_cpu(cpu) maxcpu = cpu; WARN_ON(maxcpu < 0); + if (!IS_MODULE(CONFIG_TORTURE_TEST)) + for_each_possible_cpu(cpu) { + if (cpu_online(cpu)) + continue; + ret = cpu_up(cpu); + if (ret && verbose) { + pr_alert("%s" TORTURE_FLAG + "%s: Initial online %d: errno %d\n", + __func__, torture_type, cpu, ret); + } + } if (maxcpu == 0) { VERBOSE_TOROUT_STRING("Only one CPU, so CPU-hotplug testing is disabled"); @@ -233,16 +245,15 @@ stop: */ int torture_onoff_init(long ooholdoff, long oointerval) { - int ret = 0; - #ifdef CONFIG_HOTPLUG_CPU onoff_holdoff = ooholdoff; onoff_interval = oointerval; if (onoff_interval <= 0) return 0; - ret = torture_create_kthread(torture_onoff, NULL, onoff_task); -#endif /* #ifdef CONFIG_HOTPLUG_CPU */ - return ret; + return torture_create_kthread(torture_onoff, NULL, onoff_task); +#else /* #ifdef CONFIG_HOTPLUG_CPU */ + return 0; +#endif /* #else #ifdef CONFIG_HOTPLUG_CPU */ } EXPORT_SYMBOL_GPL(torture_onoff_init); @@ -513,15 +524,13 @@ static int torture_shutdown(void *arg) */ int torture_shutdown_init(int ssecs, void (*cleanup)(void)) { - int ret = 0; - torture_shutdown_hook = cleanup; if (ssecs > 0) { shutdown_time = ktime_add(ktime_get(), ktime_set(ssecs, 0)); - ret = torture_create_kthread(torture_shutdown, NULL, + return torture_create_kthread(torture_shutdown, NULL, shutdown_task); } - return ret; + return 0; } EXPORT_SYMBOL_GPL(torture_shutdown_init); @@ -620,13 +629,10 @@ static int torture_stutter(void *arg) /* * Initialize and kick off the torture_stutter kthread. */ -int torture_stutter_init(int s) +int torture_stutter_init(const int s) { - int ret; - stutter = s; - ret = torture_create_kthread(torture_stutter, NULL, stutter_task); - return ret; + return torture_create_kthread(torture_stutter, NULL, stutter_task); } EXPORT_SYMBOL_GPL(torture_stutter_init); |