seccomp updates for v6.6-rc1

Hi Linus,

Please pull these seccomp updates for v6.6-rc1. These changes touch stuff that doesn't normally look like things related to seccomp (sched, perf, arm), but it is intentional. :) Each have been acked by maintainers and have been in -next for a while.

Thanks!

-Kees

The following changes since commit fdf0eaf11452d72945af31804e2a1048ee1b574c:

Linux 6.5-rc2 (2023-07-16 15:10:37 -0700)

are available in the Git repository at:

https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git tags/seccomp-v6.6-rc1

for you to fetch changes up to 46822860a5a9a5a558475d323a55c8aab0b54012:

seccomp: Add missing kerndoc notations (2023-08-17 12:32:15 -0700)

----------------------------------------------------------------
seccomp updates for v6.6-rc1

- Provide USER_NOTIFY flag for synchronous mode (Andrei Vagin, Peter Oskolkov). This touches the scheduler and perf but has been Acked by Peter Zijlstra.

- Fix regression in syscall skipping and restart tracing on arm32. This touches arch/arm/ but has been Acked by Arnd Bergmann.

----------------------------------------------------------------
Andrei Vagin (5):
seccomp: don't use semaphore and wait_queue together
sched: add a few helpers to wake up tasks on the current cpu
seccomp: add the synchronous mode for seccomp_unotify selftest/seccomp: add a new test for the sync mode of seccomp_user_notify perf/benchmark: add a new benchmark for seccom_unotify

Kees Cook (4):
selftests/seccomp: Handle arm32 corner cases better
ARM: ptrace: Restore syscall restart tracing
ARM: ptrace: Restore syscall skipping for tracers
seccomp: Add missing kerndoc notations

Peter Oskolkov (1):
sched: add WF_CURRENT_CPU and externise ttwu

 arch/arm/include/asm/syscall.h                |   3 +
 arch/arm/kernel/entry-common.S                |   1 +
 arch/arm/kernel/ptrace.c                      |   5 +-
 include/linux/completion.h                    |   1 +
 include/linux/swait.h                         |   2 +-
 include/linux/wait.h                          |   3 +
 include/uapi/linux/seccomp.h                  |   4 +
 kernel/sched/completion.c                     |  26 ++--
 kernel/sched/core.c                           |   5 +-
 kernel/sched/fair.c                           |   4 +
 kernel/sched/sched.h                          |  13 +-
 kernel/sched/swait.c                          |   8 +-
 kernel/sched/wait.c                           |   5 +
 kernel/seccomp.c                              |  84 ++++++++++--
 tools/arch/x86/include/uapi/asm/unistd_32.h   |   3 +
 tools/arch/x86/include/uapi/asm/unistd_64.h   |   3 +
 tools/perf/bench/Build                        |   1 +
 tools/perf/bench/bench.h                      |   1 +
 tools/perf/bench/sched-seccomp-notify.c       | 178 ++++++++++++++++++++++++++
 tools/perf/builtin-bench.c                    |   1 +
 tools/testing/selftests/seccomp/seccomp_bpf.c |  67 +++++++++-
 21 files changed, 384 insertions(+), 34 deletions(-)
 create mode 100644 tools/perf/bench/sched-seccomp-notify.c

Kees Cook