On Wed, Nov 13, 2019 at 12:52 AM Yongxin Liu wrote:
>
> Upstream commit 53da1d9456fe7f8 ("fix ptrace slowness") introduced
> preempt_disable() and preempt_enable_no_resched() in function
> ptrace_stop(), and they should be used together.
>
> In RT kernel, commit 500d5c546e46 ("signal: Revert
Upstream commit 53da1d9456fe7f8 ("fix ptrace slowness") introduced
preempt_disable() and preempt_enable_no_resched() in function
ptrace_stop(), and they should be used together.
In RT kernel, commit 500d5c546e46 ("signal: Revert ptrace preempt
magic") reverted commit 53da1d9456fe7f8. To make