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rcu: Fix macro name CONFIG_TASKS_RCU_TRACE
[ Upstream commit fed31a4dd3
]
This commit fixes several typos where CONFIG_TASKS_RCU_TRACE should
instead be CONFIG_TASKS_TRACE_RCU. Among other things, these typos
could cause CONFIG_TASKS_TRACE_RCU_READ_MB=y kernels to suffer from
memory-ordering bugs that could result in false-positive quiescent
states and too-short grace periods.
Signed-off-by: Zhouyi Zhou <zhouzhouyi@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
parent
34609faad0
commit
d3ca78775d
2 changed files with 5 additions and 5 deletions
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@ -163,7 +163,7 @@ void synchronize_rcu_tasks(void);
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# define synchronize_rcu_tasks synchronize_rcu
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# endif
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# ifdef CONFIG_TASKS_RCU_TRACE
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# ifdef CONFIG_TASKS_TRACE_RCU
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# define rcu_tasks_trace_qs(t) \
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do { \
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if (!likely(READ_ONCE((t)->trc_reader_checked)) && \
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@ -2591,17 +2591,17 @@ static void noinstr rcu_dynticks_task_exit(void)
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/* Turn on heavyweight RCU tasks trace readers on idle/user entry. */
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static void rcu_dynticks_task_trace_enter(void)
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{
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#ifdef CONFIG_TASKS_RCU_TRACE
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#ifdef CONFIG_TASKS_TRACE_RCU
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if (IS_ENABLED(CONFIG_TASKS_TRACE_RCU_READ_MB))
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current->trc_reader_special.b.need_mb = true;
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#endif /* #ifdef CONFIG_TASKS_RCU_TRACE */
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#endif /* #ifdef CONFIG_TASKS_TRACE_RCU */
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}
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/* Turn off heavyweight RCU tasks trace readers on idle/user exit. */
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static void rcu_dynticks_task_trace_exit(void)
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{
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#ifdef CONFIG_TASKS_RCU_TRACE
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#ifdef CONFIG_TASKS_TRACE_RCU
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if (IS_ENABLED(CONFIG_TASKS_TRACE_RCU_READ_MB))
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current->trc_reader_special.b.need_mb = false;
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#endif /* #ifdef CONFIG_TASKS_RCU_TRACE */
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#endif /* #ifdef CONFIG_TASKS_TRACE_RCU */
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}
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