- On Jul 30, 2018, at 3:07 PM, Pavel Machek pa...@ucw.cz wrote:
> Hi!
>
>> > Thanks for pointer.
>> >
>> > +Restartable sequences are atomic with respect to preemption (making
>> > it
>> > +atomic with respect to other threads running on the same CPU), as
>> > well
>> > +as signal delivery (
Hi!
> > Thanks for pointer.
> >
> > +Restartable sequences are atomic with respect to preemption (making
> > it
> > +atomic with respect to other threads running on the same CPU), as
> > well
> > +as signal delivery (user-space execution contexts nested over the
> > same
> > +thread).
> >
> > So
- On Jul 28, 2018, at 10:13 AM, Pavel Machek pa...@ucw.cz wrote:
> Hi!
>
>> Documentation-wise, I have posted a rseq man page rfc here:
>>
>> https://lkml.kernel.org/r/20180616195803.29877-1-mathieu.desnoy...@efficios.com
>>
>> comments are welcome!
>
> Thanks for pointer.
>
> +Restartabl
Hi!
> Documentation-wise, I have posted a rseq man page rfc here:
>
> https://lkml.kernel.org/r/20180616195803.29877-1-mathieu.desnoy...@efficios.com
>
> comments are welcome!
Thanks for pointer.
+Restartable sequences are atomic with respect to preemption (making
it
+atomic with respect to ot
- On Jul 27, 2018, at 6:01 PM, Pavel Machek pa...@ucw.cz wrote:
> Hi!
>
>> So for instance, this turns:
>>
>> int cpu = rseq_per_cpu_lock(lock, target_cpu);
>> [...]
>> rseq_per_cpu_unlock(lock, cpu);
>>
>> into
>>
>> int cpu = rseq_this_cpu_lock(lock);
>> [...]
>> rseq_per_cpu
Hi!
> So for instance, this turns:
>
> int cpu = rseq_per_cpu_lock(lock, target_cpu);
> [...]
> rseq_per_cpu_unlock(lock, cpu);
>
> into
>
> int cpu = rseq_this_cpu_lock(lock);
> [...]
> rseq_per_cpu_unlock(lock, cpu);
>
> and:
>
> per_cpu_list_push(list, node, target_cpu);
>
Hi,
Here is an updated RFC of the rseq patchset. It only includes rseq.
Further improvements are kept for later.
Compared to the previous version of this series, CONFIG_DEBUG_RSEQ=y now
ensures that system calls are not issued within a rseq critical section,
else the process is killed. This check
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