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aba9645bd1
linux/kernel/rcu
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Joel Fernandes (Google) aba9645bd1 rcu: Use READ_ONCE() for lockless read of rnp->qsmask 
The rnp->qsmask is locklessly accessed from rcutree_dying_cpu(). This
may help avoid load tearing due to concurrent access, KCSAN
issues, and preserve sanity of people reading the mask in tracing.

Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2022-10-18 14:59:57 -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 rcuperf: Change rcuperf to rcuscale 2020-08-24 18:39:24 -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 rcu: Mark writes to the rcu_segcblist structure's ->flags field 2022-02-14 10:36:58 -08:00
rcu.h Merge branch 'ctxt.2022.07.05a' into HEAD 2022-07-21 17:46:18 -07:00
rcuscale.c rcuscale: Fix smp_processor_id()-in-preemptible warnings 2022-06-21 15:57:04 -07:00
rcutorture.c Merge branches 'doc.2022.08.31b', 'fixes.2022.08.31b', 'kvfree.2022.08.31b', 'nocb.2022.09.01a', 'poll.2022.08.31b', 'poll-srcu.2022.08.31b' and 'tasks.2022.08.31b' into HEAD 2022-09-01 10:55:57 -07:00
refscale.c refscale: Convert test_lock spinlock to raw_spinlock 2022-06-21 15:57:04 -07:00
srcutiny.c srcu: Make Tiny SRCU use full-sized grace-period counters 2022-08-31 05:10:15 -07:00
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: Ensure RCU Tasks Trace loops have quiescent states 2022-08-31 05:10:55 -07:00
tiny.c Merge branches 'doc.2022.08.31b', 'fixes.2022.08.31b', 'kvfree.2022.08.31b', 'nocb.2022.09.01a', 'poll.2022.08.31b', 'poll-srcu.2022.08.31b' and 'tasks.2022.08.31b' into HEAD 2022-09-01 10:55:57 -07:00
tree_exp.h Merge branches 'doc.2022.08.31b', 'fixes.2022.08.31b', 'kvfree.2022.08.31b', 'nocb.2022.09.01a', 'poll.2022.08.31b', 'poll-srcu.2022.08.31b' and 'tasks.2022.08.31b' into HEAD 2022-09-01 10:55:57 -07:00
tree_nocb.h rcu/nocb: Add CPU number to CPU-{,de}offload failure messages 2022-08-31 05:07:19 -07:00
tree_plugin.h rcu: Synchronize ->qsmaskinitnext in rcu_boost_kthread_setaffinity() 2022-10-18 14:59:57 -07:00
tree_stall.h sched/debug: Try trigger_single_cpu_backtrace(cpu) in dump_cpu_task() 2022-08-31 05:03:14 -07:00
tree.c rcu: Use READ_ONCE() for lockless read of rnp->qsmask 2022-10-18 14:59:57 -07:00
tree.h Merge branch 'ctxt.2022.07.05a' into HEAD 2022-07-21 17:46:18 -07:00
update.c Merge branch 'ctxt.2022.07.05a' into HEAD 2022-07-21 17:46:18 -07:00