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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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