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Subject[RFC PATCH v8 0/9] Restartable sequences system call
Date
Hi,

Here is v8 of the restartable sequences system call patchset, after
taking care of feedback received from Peter Zijlstra, Andy Lutomirski,
Boqun Feng, and Dave Watson. Added PowerPC architecture support provided
by Boqun Feng. It is based on Linux kernel v4.8-rc2.

The small library provided in kernel selftests now allows to perform
either a single final commit (do_rseq()), a speculative store before the
final commit (do_rseq2()), or a speculative memcpy before the final
commit (do_rseq_memcpy()).

Feedback is welcome!

Thanks,

Mathieu

Boqun Feng (2):
Restartable sequences: powerpc architecture support
Restartable sequences: Wire up powerpc system call

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 | 11 +
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/powerpc/Kconfig | 1 +
arch/powerpc/include/asm/systbl.h | 1 +
arch/powerpc/include/asm/unistd.h | 2 +-
arch/powerpc/include/uapi/asm/unistd.h | 1 +
arch/powerpc/kernel/signal.c | 3 +
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 | 72 ++
include/trace/events/rseq.h | 64 ++
include/uapi/linux/Kbuild | 1 +
include/uapi/linux/rseq.h | 106 ++
init/Kconfig | 13 +
kernel/Makefile | 1 +
kernel/fork.c | 2 +
kernel/rseq.c | 296 ++++++
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 | 286 +++++
tools/testing/selftests/rseq/basic_test.c | 107 ++
tools/testing/selftests/rseq/param_test.c | 1116 ++++++++++++++++++++
tools/testing/selftests/rseq/rseq-arm.h | 168 +++
tools/testing/selftests/rseq/rseq-ppc.h | 273 +++++
tools/testing/selftests/rseq/rseq-x86.h | 306 ++++++
tools/testing/selftests/rseq/rseq.c | 231 ++++
tools/testing/selftests/rseq/rseq.h | 454 ++++++++
37 files changed, 3562 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
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-arm.h
create mode 100644 tools/testing/selftests/rseq/rseq-ppc.h
create mode 100644 tools/testing/selftests/rseq/rseq-x86.h
create mode 100644 tools/testing/selftests/rseq/rseq.c
create mode 100644 tools/testing/selftests/rseq/rseq.h

--
2.1.4

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