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| author | Thomas Gleixner <tglx@linutronix.de> | 2021-08-15 23:29:28 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2021-08-17 19:08:49 +0200 |
| commit | 026659b9774e4c586baeb457557fcfc4e0ad144b (patch) | |
| tree | 5355b9097ba53475d11d1c2de92555d043c9b664 /kernel/locking | |
| parent | 31552385f8e9d0869117014bf8e55ba0497e3ec8 (diff) | |
| download | lwn-026659b9774e4c586baeb457557fcfc4e0ad144b.tar.gz lwn-026659b9774e4c586baeb457557fcfc4e0ad144b.zip | |
locking/local_lock: Add PREEMPT_RT support
On PREEMPT_RT enabled kernels local_lock maps to a per CPU 'sleeping'
spinlock which protects the critical section while staying preemptible. CPU
locality is established by disabling migration.
Provide the necessary types and macros to substitute the non-RT variant.
Co-developed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20210815211306.023630962@linutronix.de
Diffstat (limited to 'kernel/locking')
0 files changed, 0 insertions, 0 deletions