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| author | Paul E. McKenney <paulmck@kernel.org> | 2019-08-04 13:17:35 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2019-10-05 10:46:05 -0700 |
| commit | 79ba7ff5a9925f5c170f51ed7a96d1475eb6c27f (patch) | |
| tree | bbc1dd08082d1b70a578c253ca1759ca2d61a4e5 /include/linux/rcutiny.h | |
| parent | 96926686deab853bcacf887501f4ed958e38666b (diff) | |
| download | lwn-79ba7ff5a9925f5c170f51ed7a96d1475eb6c27f.tar.gz lwn-79ba7ff5a9925f5c170f51ed7a96d1475eb6c27f.zip | |
rcutorture: Emulate dyntick aspect of userspace nohz_full sojourn
During an actual call_rcu() flood, there would be frequent trips to
userspace (in-kernel call_rcu() floods must be otherwise housebroken).
Userspace execution on nohz_full CPUs implies an RCU dyntick idle/not-idle
transition pair, so this commit adds emulation of that pair.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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 9bf1dfe7781f..37b6f0c2b79d 100644 --- a/include/linux/rcutiny.h +++ b/include/linux/rcutiny.h @@ -84,6 +84,7 @@ static inline void rcu_scheduler_starting(void) { } #endif /* #else #ifndef CONFIG_SRCU */ static inline void rcu_end_inkernel_boot(void) { } static inline bool rcu_is_watching(void) { return true; } +static inline void rcu_momentary_dyntick_idle(void) { } /* Avoid RCU read-side critical sections leaking across. */ static inline void rcu_all_qs(void) { barrier(); } |