Messages in this thread Patch in this message | | | From | Andrew Halaney <> | Subject | [PATCH] Documentation/locking/locktypes: Fix PREEMPT_RT _bh() description | Date | Thu, 24 Feb 2022 15:23:12 -0600 |
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With PREEMPT_RT the _bh() version of a spinlock leaves preemption enabled, align the doc to say that instead of the opposite.
Reported-by: Leah Leshchinsky <lleshchi@redhat.com> Signed-off-by: Andrew Halaney <ahalaney@redhat.com> --- Documentation/locking/locktypes.rst | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Documentation/locking/locktypes.rst b/Documentation/locking/locktypes.rst index 4fd7b70fcde1..bfa75ea1b66a 100644 --- a/Documentation/locking/locktypes.rst +++ b/Documentation/locking/locktypes.rst @@ -247,7 +247,7 @@ based on rt_mutex which changes the semantics: Non-PREEMPT_RT kernels disable preemption to get this effect. PREEMPT_RT kernels use a per-CPU lock for serialization which keeps - preemption disabled. The lock disables softirq handlers and also + preemption enabled. The lock disables softirq handlers and also prevents reentrancy due to task preemption. PREEMPT_RT kernels preserve all other spinlock_t semantics: -- 2.35.1
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