Hi Linus,
Please pull this for the RCU changes of v6.9:
The following changes since commit 41bccc98fb7931d63d03f326a746ac4d429c1dd3:
Linux 6.8-rc2 (2024-01-28 17:01:12 -0800)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/boqun/linux.git tags/rcu.next.v6.9
for you to fetch changes up to 3add00be5fe5810d7aa5ec3af8b6a245ef33144b:
Merge branches 'rcu-doc.2024.02.14a', 'rcu-nocb.2024.02.14a', 'rcu-exp.2024.02.14a', 'rcu-tasks.2024.02.26a' and 'rcu-misc.2024.02.14a' into rcu.2024.02.26a (2024-02-26 17:37:25 -0800)
Two merge conflicts were detected by linux-next:
* https://lore.kernel.org/lkml/20240226135745.12ac854d@xxxxxxxxxxxxxxxx/
* https://lore.kernel.org/lkml/20240227125522.2bdbe6be@xxxxxxxxxxxxxxxx/
These conflict resolutions from linux-next look good to me, plus I made
my own resolutions at branch merge/rcu.2024.02.27a for your reference.
Some highlights of the changes:
* Eliminates deadlocks involving do_exit() and RCU tasks, by Paul:
Instead of SRCU read side critical sections, now a percpu list is used
in do_exit() for scaning yet-to-exit tasks.
* Fixes a deadlock due to the dependency between workqueue and RCU
expedited grace period, reported by Anna-Maria Behnsen and Thomas
Gleixner and fixed by Frederic: Now RCU expedited always uses its own
kthread worker instead of a workqueue.