diff options
Diffstat (limited to 'patches/0020-rcu-Prevent-false-positive-softirq-warning-on-RT.patch')
| -rw-r--r-- | patches/0020-rcu-Prevent-false-positive-softirq-warning-on-RT.patch | 28 |
1 files changed, 0 insertions, 28 deletions
diff --git a/patches/0020-rcu-Prevent-false-positive-softirq-warning-on-RT.patch b/patches/0020-rcu-Prevent-false-positive-softirq-warning-on-RT.patch deleted file mode 100644 index d400d2d9073e..000000000000 --- a/patches/0020-rcu-Prevent-false-positive-softirq-warning-on-RT.patch +++ /dev/null @@ -1,28 +0,0 @@ -From: Thomas Gleixner <tglx@linutronix.de> -Date: Fri, 4 Dec 2020 18:01:57 +0100 -Subject: [PATCH 20/20] rcu: Prevent false positive softirq warning on RT - -Soft interrupt disabled sections can legitimately be preempted or schedule -out when blocking on a lock on RT enabled kernels so the RCU preempt check -warning has to be disabled for RT kernels. - -Signed-off-by: Thomas Gleixner <tglx@linutronix.de> -Tested-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> -Reviewed-by: Paul E. McKenney <paulmck@kernel.org> -Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> ---- - include/linux/rcupdate.h | 3 ++- - 1 file changed, 2 insertions(+), 1 deletion(-) - ---- a/include/linux/rcupdate.h -+++ b/include/linux/rcupdate.h -@@ -334,7 +334,8 @@ static inline void rcu_preempt_sleep_che - #define rcu_sleep_check() \ - do { \ - rcu_preempt_sleep_check(); \ -- RCU_LOCKDEP_WARN(lock_is_held(&rcu_bh_lock_map), \ -+ if (!IS_ENABLED(CONFIG_PREEMPT_RT)) \ -+ RCU_LOCKDEP_WARN(lock_is_held(&rcu_bh_lock_map), \ - "Illegal context switch in RCU-bh read-side critical section"); \ - RCU_LOCKDEP_WARN(lock_is_held(&rcu_sched_lock_map), \ - "Illegal context switch in RCU-sched read-side critical section"); \ |