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Paul E. McKenney 596d1fea05 rcu: Suppress smp_processor_id() complaint in synchronize_rcu_expedited_wait() 
[ Upstream commit 2d7f00b2f0 ]

The normal grace period's RCU CPU stall warnings are invoked from the
scheduling-clock interrupt handler, and can thus invoke smp_processor_id()
with impunity, which allows them to directly invoke dump_cpu_task().
In contrast, the expedited grace period's RCU CPU stall warnings are
invoked from process context, which causes the dump_cpu_task() function's
calls to smp_processor_id() to complain bitterly in debug kernels.

This commit therefore causes synchronize_rcu_expedited_wait() to disable
preemption around its call to dump_cpu_task().

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2023-03-11 16:43:54 +01:00
..
Kconfig rcu: Use CONFIG_PREEMPTION 2019-07-31 19:03:35 +02:00
Kconfig.debug rcu: Add support for consolidated-RCU reader checking 2019-08-09 11:00:35 -07:00
Makefile
…
rcu.h srcu: Fix broken node geometry after early ssp init 2021-07-20 16:10:41 +02:00
rcu_segcblist.c rcu/nocb: Add bypass callback queueing 2019-08-13 14:37:32 -07:00
rcu_segcblist.h rcu/nocb: Add bypass callback queueing 2019-08-13 14:37:32 -07:00
rcuperf.c rcuperf: Make rcuperf kernel test more robust for !expedited mode 2019-08-01 14:30:22 -07:00
rcutorture.c rcu/nocb: Print no-CBs diagnostics when rcutorture writer unduly delayed 2019-08-13 14:38:24 -07:00
srcutiny.c
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srcutree.c srcu: Fix broken node geometry after early ssp init 2021-07-20 16:10:41 +02:00
sync.c
…
tiny.c
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tree.c rcu: Fix __this_cpu_read() lockdep warning in rcu_force_quiescent_state() 2023-01-18 11:41:33 +01:00
tree.h rcu/nocb: Print no-CBs diagnostics when rcutorture writer unduly delayed 2019-08-13 14:38:24 -07:00
tree_exp.h rcu: Suppress smp_processor_id() complaint in synchronize_rcu_expedited_wait() 2023-03-11 16:43:54 +01:00
tree_plugin.h rcu: Don't deboost before reporting expedited quiescent state 2022-03-28 08:46:48 +02:00
tree_stall.h rcu/tree: Handle VM stoppage in stall detection 2021-09-15 09:47:26 +02:00
update.c Merge branches 'consolidate.2019.08.01b', 'fixes.2019.08.12a', 'lists.2019.08.13a' and 'torture.2019.08.01b' into HEAD 2019-08-13 14:30:30 -07:00