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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-07-18 14:32:31 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-08-29 09:20:48 -0700 |
| commit | 1b27291b1ea4f1f2090fb07c3425db474cdb99ba (patch) | |
| tree | 03f2f7c99cbb7888cb83af55adedb369762a61e6 /include/linux/rcutiny.h | |
| parent | a52d14addf06c00cfca4f1698e254955942be754 (diff) | |
| download | lwn-1b27291b1ea4f1f2090fb07c3425db474cdb99ba.tar.gz lwn-1b27291b1ea4f1f2090fb07c3425db474cdb99ba.zip | |
rcutorture: Add forward-progress tests for RCU grace periods
This commit adds a kthread that loops going into and out of RCU
read-side critical sections, but also including a cond_resched(),
optionally guarded by a check of need_resched(), in that same loop.
This commit relies solely on rcu_torture_writer() progress to judge
the forward progress of grace periods.
Note that Tasks RCU and SRCU are exempted from forward-progress testing
due their (intentionally) less-robust forward-progress guarantees.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'include/linux/rcutiny.h')
| -rw-r--r-- | include/linux/rcutiny.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/rcutiny.h b/include/linux/rcutiny.h index 8d9a0ea8f0b5..a6353f3d6094 100644 --- a/include/linux/rcutiny.h +++ b/include/linux/rcutiny.h @@ -108,6 +108,7 @@ static inline int rcu_needs_cpu(u64 basemono, u64 *nextevt) */ static inline void rcu_virt_note_context_switch(int cpu) { } static inline void rcu_cpu_stall_reset(void) { } +static inline int rcu_jiffies_till_stall_check(void) { return 21 * HZ; } static inline void rcu_idle_enter(void) { } static inline void rcu_idle_exit(void) { } static inline void rcu_irq_enter(void) { } |