Re: [PATCH glibc 1/3] glibc: Perform rseq registration at C startup and thread creation (v20)

----- On Jun 3, 2020, at 1:22 PM, Joseph Myers joseph@codesourcery.com wrote:

On Wed, 3 Jun 2020, Florian Weimer via Libc-alpha wrote:

quoted

I'm still waiting for feedback from other maintainers whether the level
of documentation and testing is appropriate.

Looking at the documentation in the manual, it doesn't look like it has
enough information for someone to use this functionality, or to know when
they might want to use it, and nor does it point to external documentation
of it.  It would seem appropriate at least to include a link to wherever
the external documentation is of what this functionality is good for, how
to create and use a "Restartable Sequence critical section", and how to
"perform rseq registration to the kernel".

That external piece of documentation would be part of the Linux man-pages
project, maintained by Michael Kerrisk. I have submitted a few revisions
of the rseq(2) man page, but have been waiting for Michael to reply for more
than a year now:

  https://lore.kernel.org/r/2021826204.69809.1588000508294.JavaMail.zimbra@efficios.com (local)

I'm thinking about hosting a rseq(2) man-page into my librseq project, would
that make sense ?

librseq is currently a development branch in my own repository for now. It still
needs to be tweaked to adapt to the various changes that went into the glibc rseq
enablement patchset, and then I plan to move it to a more "formal" home:

  https://github.com/compudj/librseq

Thanks,

Mathieu


-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com