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| author | Andrew Halaney <ahalaney@redhat.com> | 2022-02-24 15:23:12 -0600 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2022-03-04 10:13:19 -0700 |
| commit | 0d2be10b3037c12d68003856b8d6c83d1b80e0c9 (patch) | |
| tree | 38d9d0952e4565ff675cce763f05e04b8cbb949b /Documentation | |
| parent | 247097e2bbff4201b85eee8de4f31b4065877f67 (diff) | |
| download | lwn-0d2be10b3037c12d68003856b8d6c83d1b80e0c9.tar.gz lwn-0d2be10b3037c12d68003856b8d6c83d1b80e0c9.zip | |
Documentation/locking/locktypes: Fix PREEMPT_RT _bh() description
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>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://lore.kernel.org/r/20220224212312.2601153-1-ahalaney@redhat.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/locking/locktypes.rst | 2 |
1 files changed, 1 insertions, 1 deletions
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: |