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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-03 12:35:05 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-03 12:35:05 -0700 |
| commit | 59a3d4c3631e553357b7305dc09db1990aa6757c (patch) | |
| tree | 7c55a2447dc7175d8701c600e5536e4a18d8388b /kernel/locking | |
| parent | ff806d034ef8e9a95ff0b0532104dd65332e446b (diff) | |
| parent | e14505a8d50882ff3bdd4b791b14d90a0881fa4d (diff) | |
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next
Pull RCU changes from Ingo Molnar:
"The main RCU changes in this cycle were:
- RCU torture-test changes.
- variable-name renaming cleanup.
- update RCU documentation.
- miscellaneous fixes.
- patch to suppress RCU stall warnings while sysrq requests are being
processed"
* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (68 commits)
rcu: Provide API to suppress stall warnings while sysrc runs
rcu: Variable name changed in tree_plugin.h and used in tree.c
torture: Remove unused definition
torture: Remove __init from torture_init_begin/end
torture: Check for multiple concurrent torture tests
locktorture: Remove reference to nonexistent Kconfig parameter
rcutorture: Run rcu_torture_writer at normal priority
rcutorture: Note diffs from git commits
rcutorture: Add missing destroy_timer_on_stack()
rcutorture: Explicitly test synchronous grace-period primitives
rcutorture: Add tests for get_state_synchronize_rcu()
rcutorture: Test RCU-sched primitives in TREE_PREEMPT_RCU kernels
torture: Use elapsed time to detect hangs
rcutorture: Check for rcu_torture_fqs creation errors
torture: Better summary diagnostics for build failures
torture: Notice if an all-zero cpumask is passed inside a critical section
rcutorture: Make rcu_torture_reader() use cond_resched()
sched,rcu: Make cond_resched() report RCU quiescent states
percpu: Fix raw_cpu_inc_return()
rcutorture: Export RCU grace-period kthread wait state to rcutorture
...
Diffstat (limited to 'kernel/locking')
| -rw-r--r-- | kernel/locking/locktorture.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/kernel/locking/locktorture.c b/kernel/locking/locktorture.c index f26b1a18e34..dbafeac18e4 100644 --- a/kernel/locking/locktorture.c +++ b/kernel/locking/locktorture.c @@ -82,14 +82,14 @@ struct lock_writer_stress_stats { }; static struct lock_writer_stress_stats *lwsa; -#if defined(MODULE) || defined(CONFIG_LOCK_TORTURE_TEST_RUNNABLE) +#if defined(MODULE) #define LOCKTORTURE_RUNNABLE_INIT 1 #else #define LOCKTORTURE_RUNNABLE_INIT 0 #endif int locktorture_runnable = LOCKTORTURE_RUNNABLE_INIT; module_param(locktorture_runnable, int, 0444); -MODULE_PARM_DESC(locktorture_runnable, "Start locktorture at boot"); +MODULE_PARM_DESC(locktorture_runnable, "Start locktorture at module init"); /* Forward reference. */ static void lock_torture_cleanup(void); @@ -219,7 +219,8 @@ static int lock_torture_writer(void *arg) set_user_nice(current, 19); do { - schedule_timeout_uninterruptible(1); + if ((torture_random(&rand) & 0xfffff) == 0) + schedule_timeout_uninterruptible(1); cur_ops->writelock(); if (WARN_ON_ONCE(lock_is_write_held)) lwsp->n_write_lock_fail++; @@ -354,7 +355,8 @@ static int __init lock_torture_init(void) &lock_busted_ops, &spin_lock_ops, &spin_lock_irq_ops, }; - torture_init_begin(torture_type, verbose, &locktorture_runnable); + if (!torture_init_begin(torture_type, verbose, &locktorture_runnable)) + return -EBUSY; /* Process args and tell the world that the torturer is on the job. */ for (i = 0; i < ARRAY_SIZE(torture_ops); i++) { |