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| author | Sebastian Andrzej Siewior <[email protected]> | 2023-08-03 12:09:32 +0200 |
|---|---|---|
| committer | Thomas Gleixner <[email protected]> | 2023-09-19 22:08:29 +0200 |
| commit | 1aabbc532413ced293952f8e149ad0a607d6e470 (patch) | |
| tree | 0228090cc9cef5ca2f08a36fc0f4fc2c9fd9f8fa /scripts/generate_rust_analyzer.py | |
| parent | a20d6f63dbfc176697886d7709312ad0a795648e (diff) | |
signal: Don't disable preemption in ptrace_stop() on PREEMPT_RT
On PREEMPT_RT keeping preemption disabled during the invocation of
cgroup_enter_frozen() is a problem because the function acquires
css_set_lock which is a sleeping lock on PREEMPT_RT and must not be
acquired with disabled preemption.
The preempt-disabled section is only for performance optimisation reasons
and can be avoided.
Extend the comment and don't disable preemption before scheduling on
PREEMPT_RT.
Signed-off-by: Sebastian Andrzej Siewior <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Acked-by: Oleg Nesterov <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'scripts/generate_rust_analyzer.py')
0 files changed, 0 insertions, 0 deletions