From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Subject: Re: [PATCH 02/14] rseq: Introduce restartable sequences system call
 (v13)
Date: Wed, 16 May 2018 16:18:37 -0400 (EDT)
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References: <20180430224433.17407-1-mathieu.desnoyers@efficios.com> <20180430224433.17407-3-mathieu.desnoyers@efficios.com> <20180516162454.GJ12198@hirez.programming.kicks-ass.net>
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To: Peter Zijlstra <peterz@infradead.org>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>, Boqun Feng <boqun.feng@gmail.com>, Andy Lutomirski <luto@amacapital.net>, Dave Watson <davejwatson@fb.com>, linux-kernel <linux-kernel@vger.kernel.org>, linux-api <linux-api@vger.kernel.org>, Paul Turner <pjt@google.com>, Andrew Morton <akpm@linux-foundation.org>, Russell King <linux@arm.linux.org.uk>, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>, Andrew Hunter <ahh@google.com>, Andi Kleen <andi@firstfloor.org>, Chris Lameter <cl@linux.com>, Ben Maurer <bmaurer@fb.com>, rostedt <rostedt@goodmis.org>, Josh Triplett <josh@joshtriplett.org>, Linus Torvalds <torvalds@linux-foundation.org>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will>
List-Id: linux-api@vger.kernel.org

----- On May 16, 2018, at 12:24 PM, Peter Zijlstra peterz@infradead.org wrote:

> On Mon, Apr 30, 2018 at 06:44:21PM -0400, Mathieu Desnoyers wrote:
>> Expose a new system call allowing each thread to register one userspace
>> memory area to be used as an ABI between kernel and user-space for two
>> purposes: user-space restartable sequences and quick access to read the
>> current CPU number value from user-space.
> 
>> ---
>>  MAINTAINERS                 |  11 ++
>>  arch/Kconfig                |   7 +
>>  fs/exec.c                   |   1 +
>>  include/linux/sched.h       | 134 +++++++++++++++++
>>  include/linux/syscalls.h    |   4 +-
>>  include/trace/events/rseq.h |  57 +++++++
>>  include/uapi/linux/rseq.h   | 133 +++++++++++++++++
>>  init/Kconfig                |  23 +++
>>  kernel/Makefile             |   1 +
>>  kernel/fork.c               |   2 +
>>  kernel/rseq.c               | 357 ++++++++++++++++++++++++++++++++++++++++++++
>>  kernel/sched/core.c         |   2 +
>>  kernel/sys_ni.c             |   3 +
>>  13 files changed, 734 insertions(+), 1 deletion(-)
>>  create mode 100644 include/trace/events/rseq.h
>>  create mode 100644 include/uapi/linux/rseq.h
>>  create mode 100644 kernel/rseq.c
>> 
> 
> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>

Thanks Peter !

Mathieu


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