From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
To: 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>
Cc: linux-kernel@vger.kernel.org, linux-api@vger.kernel.org,
Paul Turner <pjt@google.com>, Andrew Hunter <ahh@google.com>,
Peter Zijlstra <peterz@infradead.org>,
Andy Lutomirski <luto@amacapital.net>,
Andi Kleen <andi@firstfloor.org>,
Dave Watson <davejwatson@fb.com>, Chris Lameter <cl@linux.com>,
Ben Maurer <bmaurer@fb.com>, Steven Rostedt <rostedt@goodmis.org>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
Josh Triplett <josh@joshtriplett.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Michael Kerrisk <mtk.manpages@gmail.com>,
Boqun Feng <boqun.feng@gmail.com>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Subject: [RFC PATCH v7 0/7] Restartable sequences system call
Date: Thu, 21 Jul 2016 17:14:15 -0400 [thread overview]
Message-ID: <1469135662-31512-1-git-send-email-mathieu.desnoyers@efficios.com> (raw)
Hi,
This is mostly a re-write of Paul Turner and Andrew Hunter's restartable
critical sections (percpu atomics), which brings the following main
benefits over Paul Turner's prior version (v2):
- The ABI is now architecture-agnostic, and it requires fewer
instruction on the user-space fast path,
- Ported to ARM 32, in addition to cover x86 32/64. Adding support
for new architectures is now trivial,
- Progress is ensured by a fall-back to locking (purely userspace)
when single-stepped by a debugger.
This is v7, as it derives from my prior getcpu cache and thread local
ABI patchsets. You will find benchmark results in the changelog of
patch 1/7.
Feedback is welcome!
Thanks,
Mathieu
Mathieu Desnoyers (7):
Restartable sequences system call
tracing: instrument restartable sequences
Restartable sequences: ARM 32 architecture support
Restartable sequences: wire up ARM 32 system call
Restartable sequences: x86 32/64 architecture support
Restartable sequences: wire up x86 32/64 system call
Restartable sequences: self-tests
MAINTAINERS | 7 +
arch/Kconfig | 7 +
arch/arm/Kconfig | 1 +
arch/arm/include/uapi/asm/unistd.h | 1 +
arch/arm/kernel/calls.S | 1 +
arch/arm/kernel/signal.c | 7 +
arch/x86/Kconfig | 1 +
arch/x86/entry/common.c | 1 +
arch/x86/entry/syscalls/syscall_32.tbl | 1 +
arch/x86/entry/syscalls/syscall_64.tbl | 1 +
arch/x86/kernel/signal.c | 6 +
fs/exec.c | 1 +
include/linux/sched.h | 68 ++
include/trace/events/rseq.h | 60 ++
include/uapi/linux/Kbuild | 1 +
include/uapi/linux/rseq.h | 85 +++
init/Kconfig | 13 +
kernel/Makefile | 1 +
kernel/fork.c | 2 +
kernel/rseq.c | 243 +++++++
kernel/sched/core.c | 1 +
kernel/sys_ni.c | 3 +
tools/testing/selftests/rseq/.gitignore | 3 +
tools/testing/selftests/rseq/Makefile | 13 +
.../testing/selftests/rseq/basic_percpu_ops_test.c | 279 ++++++++
tools/testing/selftests/rseq/basic_test.c | 106 +++
tools/testing/selftests/rseq/param_test.c | 707 +++++++++++++++++++++
tools/testing/selftests/rseq/rseq.c | 200 ++++++
tools/testing/selftests/rseq/rseq.h | 449 +++++++++++++
29 files changed, 2269 insertions(+)
create mode 100644 include/trace/events/rseq.h
create mode 100644 include/uapi/linux/rseq.h
create mode 100644 kernel/rseq.c
create mode 100644 tools/testing/selftests/rseq/.gitignore
create mode 100644 tools/testing/selftests/rseq/Makefile
create mode 100644 tools/testing/selftests/rseq/basic_percpu_ops_test.c
create mode 100644 tools/testing/selftests/rseq/basic_test.c
create mode 100644 tools/testing/selftests/rseq/param_test.c
create mode 100644 tools/testing/selftests/rseq/rseq.c
create mode 100644 tools/testing/selftests/rseq/rseq.h
--
2.1.4
next reply other threads:[~2016-07-21 21:15 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-21 21:14 Mathieu Desnoyers [this message]
2016-07-21 21:14 ` [RFC PATCH v7 1/7] " Mathieu Desnoyers
2016-07-25 23:02 ` Andy Lutomirski
2016-07-26 3:02 ` Mathieu Desnoyers
2016-08-03 12:27 ` Peter Zijlstra
2016-08-03 16:37 ` Andy Lutomirski
2016-08-03 18:31 ` Christoph Lameter
2016-08-04 5:01 ` Andy Lutomirski
2016-08-04 4:27 ` Boqun Feng
2016-08-04 5:03 ` Andy Lutomirski
2016-08-09 16:13 ` Boqun Feng
2016-08-10 8:01 ` Andy Lutomirski
2016-08-10 17:40 ` Mathieu Desnoyers
2016-08-10 17:33 ` Mathieu Desnoyers
2016-08-11 4:54 ` Boqun Feng
2016-08-10 8:13 ` Andy Lutomirski
2016-08-03 18:29 ` Christoph Lameter
2016-08-10 16:47 ` Mathieu Desnoyers
2016-08-10 16:59 ` Christoph Lameter
2016-07-27 15:03 ` Boqun Feng
2016-07-27 15:05 ` [RFC 1/4] rseq/param_test: Convert test_data_entry::count to intptr_t Boqun Feng
2016-07-27 15:05 ` [RFC 2/4] Restartable sequences: powerpc architecture support Boqun Feng
2016-07-28 3:13 ` Mathieu Desnoyers
2016-07-27 15:05 ` [RFC 3/4] Restartable sequences: Wire up powerpc system call Boqun Feng
2016-07-28 3:13 ` Mathieu Desnoyers
2016-07-27 15:05 ` [RFC 4/4] Restartable sequences: Add self-tests for PPC Boqun Feng
2016-07-28 2:59 ` Mathieu Desnoyers
2016-07-28 4:43 ` Boqun Feng
2016-07-28 7:37 ` [RFC v2] " Boqun Feng
2016-07-28 14:04 ` Mathieu Desnoyers
2016-07-28 13:42 ` [RFC 4/4] " Mathieu Desnoyers
2016-07-28 3:07 ` [RFC 1/4] rseq/param_test: Convert test_data_entry::count to intptr_t Mathieu Desnoyers
2016-07-28 3:10 ` [RFC PATCH v7 1/7] Restartable sequences system call Mathieu Desnoyers
2016-08-03 13:19 ` Peter Zijlstra
2016-08-03 14:53 ` Paul E. McKenney
2016-08-03 15:45 ` Boqun Feng
2016-08-07 15:36 ` Mathieu Desnoyers
2016-08-07 23:35 ` Boqun Feng
2016-08-09 13:22 ` Mathieu Desnoyers
2016-08-09 20:06 ` Mathieu Desnoyers
2016-08-09 21:33 ` Peter Zijlstra
2016-08-09 22:41 ` Mathieu Desnoyers
2016-08-10 7:50 ` Peter Zijlstra
2016-08-10 13:26 ` Mathieu Desnoyers
2016-08-10 13:33 ` Peter Zijlstra
2016-08-10 14:04 ` Mathieu Desnoyers
2016-08-10 8:10 ` Andy Lutomirski
2016-08-10 19:04 ` Mathieu Desnoyers
2016-08-10 19:16 ` Andy Lutomirski
2016-08-10 20:06 ` Mathieu Desnoyers
2016-08-10 20:09 ` Andy Lutomirski
2016-08-10 21:01 ` Mathieu Desnoyers
2016-08-11 7:23 ` Andy Lutomirski
2016-08-10 8:43 ` Peter Zijlstra
2016-08-10 13:57 ` Mathieu Desnoyers
2016-08-10 14:28 ` Peter Zijlstra
2016-08-10 14:44 ` Mathieu Desnoyers
2016-08-10 13:29 ` Peter Zijlstra
2016-07-21 21:14 ` [RFC PATCH v7 2/7] tracing: instrument restartable sequences Mathieu Desnoyers
2016-07-21 21:14 ` [RFC PATCH v7 3/7] Restartable sequences: ARM 32 architecture support Mathieu Desnoyers
2016-07-21 21:14 ` [RFC PATCH v7 4/7] Restartable sequences: wire up ARM 32 system call Mathieu Desnoyers
2016-07-21 21:14 ` [RFC PATCH v7 5/7] Restartable sequences: x86 32/64 architecture support Mathieu Desnoyers
2016-07-21 21:14 ` [RFC PATCH v7 6/7] Restartable sequences: wire up x86 32/64 system call Mathieu Desnoyers
2016-07-21 21:14 ` [RFC PATCH v7 7/7] Restartable sequences: self-tests Mathieu Desnoyers
[not found] ` <CO1PR15MB09822FC140F84DCEEF2004CDDD0B0@CO1PR15MB0982.namprd15.prod.outlook.com>
2016-07-24 3:09 ` Mathieu Desnoyers
2016-07-24 18:01 ` Dave Watson
2016-07-25 16:43 ` Mathieu Desnoyers
2016-08-11 23:26 ` Mathieu Desnoyers
2016-08-12 1:28 ` Boqun Feng
2016-08-12 3:10 ` Mathieu Desnoyers
2016-08-12 3:13 ` Mathieu Desnoyers
2016-08-12 5:30 ` Boqun Feng
2016-08-12 16:35 ` Boqun Feng
2016-08-12 18:11 ` Mathieu Desnoyers
2016-08-13 1:28 ` Boqun Feng
2016-08-14 15:02 ` Mathieu Desnoyers
2016-08-15 0:56 ` Boqun Feng
2016-08-15 18:06 ` Mathieu Desnoyers
2016-08-12 19:36 ` Mathieu Desnoyers
2016-08-12 20:05 ` Dave Watson
2016-08-14 17:09 ` Mathieu Desnoyers
2016-07-25 18:12 ` Mathieu Desnoyers
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