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authorLinus Torvalds <torvalds@linux-foundation.org>2024-03-11 22:02:50 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2024-03-11 22:02:50 +0300
commite5a3878c947ceef7b6ab68fdc093f3848059842c (patch)
tree0ad530cfbc2f6c1c2b6e98a08988a8c48a522e86 /init
parent1ddeeb2a058d7b2a58ed9e820396b4ceb715d529 (diff)
parent3add00be5fe5810d7aa5ec3af8b6a245ef33144b (diff)
downloadlinux-e5a3878c947ceef7b6ab68fdc093f3848059842c.tar.xz
Merge tag 'rcu.next.v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/boqun/linux
Pull RCU updates from Boqun Feng: - Eliminate 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 - Fix 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 - RCU NOCB updates, code cleanups, unnecessary barrier removals and minor bug fixes - Maintain real-time response in rcu_tasks_postscan() and a minor fix for tasks trace quiescence check - Misc updates, comments and readibility improvement, boot time parameter for lazy RCU and rcutorture improvement - Documentation updates * tag 'rcu.next.v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/boqun/linux: (34 commits) rcu-tasks: Maintain real-time response in rcu_tasks_postscan() rcu-tasks: Eliminate deadlocks involving do_exit() and RCU tasks rcu-tasks: Maintain lists to eliminate RCU-tasks/do_exit() deadlocks rcu-tasks: Initialize data to eliminate RCU-tasks/do_exit() deadlocks rcu-tasks: Initialize callback lists at rcu_init() time rcu-tasks: Add data to eliminate RCU-tasks/do_exit() deadlocks rcu-tasks: Repair RCU Tasks Trace quiescence check rcu/sync: remove un-used rcu_sync_enter_start function rcutorture: Suppress rtort_pipe_count warnings until after stalls srcu: Improve comments about acceleration leak rcu: Provide a boot time parameter to control lazy RCU rcu: Rename jiffies_till_flush to jiffies_lazy_flush doc: Update checklist.rst discussion of callback execution doc: Clarify use of slab constructors and SLAB_TYPESAFE_BY_RCU context_tracking: Fix kerneldoc headers for __ct_user_{enter,exit}() doc: Add EARLY flag to early-parsed kernel boot parameters doc: Add CONFIG_RCU_STRICT_GRACE_PERIOD to checklist.rst doc: Make checklist.rst note that spinlocks are implied RCU readers doc: Make whatisRCU.rst note that spinlocks are RCU readers doc: Spinlocks are implied RCU readers ...
Diffstat (limited to 'init')
-rw-r--r--init/init_task.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/init/init_task.c b/init/init_task.c
index 7ecb458eb3da..4daee6d761c8 100644
--- a/init/init_task.c
+++ b/init/init_task.c
@@ -147,6 +147,7 @@ struct task_struct init_task __aligned(L1_CACHE_BYTES) = {
.rcu_tasks_holdout = false,
.rcu_tasks_holdout_list = LIST_HEAD_INIT(init_task.rcu_tasks_holdout_list),
.rcu_tasks_idle_cpu = -1,
+ .rcu_tasks_exit_list = LIST_HEAD_INIT(init_task.rcu_tasks_exit_list),
#endif
#ifdef CONFIG_TASKS_TRACE_RCU
.trc_reader_nesting = 0,