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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2018-07-19 00:32:31 +0300
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2018-08-29 19:20:48 +0300
commit1b27291b1ea4f1f2090fb07c3425db474cdb99ba (patch)
tree03f2f7c99cbb7888cb83af55adedb369762a61e6 /include/linux/rcutiny.h
parenta52d14addf06c00cfca4f1698e254955942be754 (diff)
downloadlinux-1b27291b1ea4f1f2090fb07c3425db474cdb99ba.tar.xz
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.h1
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) { }