Frederic Weisbecker 55911a9f42 rcu: Remove full memory barrier on RCU stall printout ...

RCU stall printout fetches the EQS state of a CPU with a preceding full
memory barrier. However there is nothing to order this read against at
this debugging stage. It is inherently racy when performed remotely.

Do a plain read instead.

This was the last user of rcu_dynticks_snap().

Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Neeraj Upadhyay <neeraj.upadhyay@kernel.org>

2024-06-28 06:44:12 -07:00

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Kconfig

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Kconfig.debug

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Makefile

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rcu_segcblist.c

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rcu_segcblist.h

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rcu.h

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rcuscale.c

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rcutorture.c

rcutorture: Use rcu_gp_slow_register/unregister() only for rcutype test

2024-04-16 11:16:36 +02:00

refscale.c

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srcutiny.c

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srcutree.c

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sync.c

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tasks.h

Merge branches 'fixes.2024.04.15a', 'misc.2024.04.12a', 'rcu-sync-normal-improve.2024.04.15a', 'rcu-tasks.2024.04.15a' and 'rcutorture.2024.04.15a' into rcu-merge.2024.04.15a

2024-05-01 13:04:02 +02:00

tiny.c

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tree_exp.h

rcu/exp: Remove superfluous full memory barrier upon first EQS snapshot

2024-06-28 06:43:34 -07:00

tree_nocb.h

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tree_plugin.h

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tree_stall.h

rcu: Remove full memory barrier on RCU stall printout

2024-06-28 06:44:12 -07:00

tree.c

rcu: Remove full memory barrier on RCU stall printout

2024-06-28 06:44:12 -07:00

tree.h

Merge branches 'fixes.2024.04.15a', 'misc.2024.04.12a', 'rcu-sync-normal-improve.2024.04.15a', 'rcu-tasks.2024.04.15a' and 'rcutorture.2024.04.15a' into rcu-merge.2024.04.15a

2024-05-01 13:04:02 +02:00

update.c

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