kernel-hacking-2024-linux-s.../kernel/rcu
Paul E. McKenney 089254fd38 rcu: Document reason for rcu_all_qs() call to preempt_disable()
Given that rcu_all_qs() is in non-preemptible kernels, why on earth should
it invoke preempt_disable()?  This commit adds the reason, which is to
work nicely with debugging enabled in CONFIG_PREEMPT_COUNT=y kernels.

Reported-by: Neeraj Upadhyay <quic_neeraju@quicinc.com>
Reported-by: Boqun Feng <boqun.feng@gmail.com>
Reported-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2022-08-31 05:03:14 -07:00
..
Kconfig Merge branch 'ctxt.2022.07.05a' into HEAD 2022-07-21 17:46:18 -07:00
Kconfig.debug Char / Misc driver changes for 6.0-rc1 2022-08-04 11:05:48 -07:00
Makefile
rcu.h Merge branch 'ctxt.2022.07.05a' into HEAD 2022-07-21 17:46:18 -07:00
rcu_segcblist.c rcu: Clarify fill-the-gap comment in rcu_segcblist_advance() 2022-04-11 17:28:48 -07:00
rcu_segcblist.h
rcuscale.c rcuscale: Fix smp_processor_id()-in-preemptible warnings 2022-06-21 15:57:04 -07:00
rcutorture.c Merge branches 'doc.2022.06.21a', 'fixes.2022.07.19a', 'nocb.2022.07.19a', 'poll.2022.07.21a', 'rcu-tasks.2022.06.21a' and 'torture.2022.06.21a' into HEAD 2022-07-21 17:43:16 -07:00
refscale.c refscale: Convert test_lock spinlock to raw_spinlock 2022-06-21 15:57:04 -07:00
srcutiny.c
srcutree.c srcu: Make expedited RCU grace periods block even less frequently 2022-07-19 11:39:59 -07:00
sync.c rcu_sync: Fix comment to properly reflect rcu_sync_exit() behavior 2022-04-20 16:51:11 -07:00
tasks.h rcu-tasks: Use delayed_work to delay rcu_tasks_verify_self_tests() 2022-06-21 15:49:38 -07:00
tiny.c rcu: Make tiny RCU support leak callbacks for debug-object errors 2022-08-31 05:03:14 -07:00
tree.c - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe 2022-08-05 16:32:45 -07:00
tree.h Merge branch 'ctxt.2022.07.05a' into HEAD 2022-07-21 17:46:18 -07:00
tree_exp.h rcu: Add QS check in rcu_exp_handler() for non-preemptible kernels 2022-08-31 05:03:14 -07:00
tree_nocb.h rcu/nocb: Avoid polling when my_rdp->nocb_head_rdp list is empty 2022-07-19 11:43:55 -07:00
tree_plugin.h rcu: Document reason for rcu_all_qs() call to preempt_disable() 2022-08-31 05:03:14 -07:00
tree_stall.h RCU pull request for v5.20 (or whatever) 2022-08-02 19:12:45 -07:00
update.c Merge branch 'ctxt.2022.07.05a' into HEAD 2022-07-21 17:46:18 -07:00