rcu: Make rcu_blocking_is_gp() stop early-boot might_sleep()

Browse source

Currently, rcu_blocking_is_gp() invokes might_sleep() even during early
boot when interrupts are disabled and before the scheduler is scheduling.
This is at best an accident waiting to happen.  Therefore, this commit
moves that might_sleep() under an rcu_scheduler_active check in order
to ensure that might_sleep() is not invoked unless sleeping might actually
happen.

Signed-off-by: Zqiang <qiang1.zhang@intel.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

...

This commit is contained in:

Zqiang 2022-12-15 11:57:55 +08:00 • committed by Paul E. McKenney

parent 2d7f00b2f0

commit 3d1adf7ada

1 changed files with 3 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

5

kernel/rcu/tree.c

View file