Re: [RFC PATCH] glibc: Perform rseq(2) registration at nptl init and thread creation

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On Thu, 20 Sep 2018, Mathieu Desnoyers wrote:

> Something like this in pthreadP.h ?
> 
> +#ifdef __NR_rseq
> +#include <sysdeps/unix/sysv/linux/rseq-internal.h>
> +#else
> +#include <sysdeps/nptl/rseq-internal.h>
> +#endif  /* __NR_rseq.  */
> 
> where sysdeps/unix/sysv/linux/rseq-internal.h contains the linux
> implementation of rseq_register_current_thread () and
> rseq_unregister_current_thread (), and sysdeps/nptl/rseq-internal.h
> contains stubs.
> 
> Am I on the right track ?

It's hard to define the right abstractions for what goes where given that 
only Linux uses NPTL since the removal of the NaCl port.  I suppose it 
does make logical sense for a #include of <linux/rseq.h> to go somewhere 
under sysdeps/unix/sysv/linux/.

-- 
Joseph S. Myers
joseph@xxxxxxxxxxxxxxxx



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