Thread (4 messages) 4 messages, 2 authors, 2016-12-05

Re: [PATCH] arm: kprobe: replace patch_lock to raw lock

From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: 2016-12-01 14:12:37
Also in: linux-arm-kernel, lkml

On 2016-11-10 16:17:55 [-0800], Yang Shi wrote:
Since patch_text_stop_machine() is called in stop_machine() which disables IRQ,
sleepable lock should be not used in this atomic context, so replace patch_lock
to raw lock.
I am taking this one. Thank you.
We have jump_labels() deactivated on ARM because stop_machine() may
cause latencies at runtime. kprobe and kgdb is used by the user on
purpose (and not because he changed some sched setting) I think we are
fine. I am going to document this.
Signed-off-by: Yang Shi <redacted>
Sebastian
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