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SubjectRe: [OFFLIST] [PATCH v1 0/2] pidfd: waiting on processes through pidfds
Hi Christian,

just fyi, can't read this patch till Monday


On 07/26, Christian Brauner wrote:
> Hey everyone,
>
> /* v1 */
> This adds the ability to wait on processes using pidfds. This is one of
> the few missing pieces to make it possible to manage processes using
> only pidfds.
>
> Please note the following major changes (More details can be found in
> the individual commit changelogs.):
> - Add the new type P_PIDFD to waitid() instead of a new dedicated
> pidfd_wait() syscall.
> This is the same approach we discussed a few months ago and still
> prefer over adding a dedicated syscall.
> - Adapt the tests to the new type P_PIDFD for waitid().
> - Remove struct waitid_info patch.
> This will be sent out as a separate patch.
> - Remove CLONE_WAIT_PID patch.
> This will be sent out as a separate patch.
>
> The core patch for waitid is pleasantly small. The largest change is
> caused by adding proper tests for waitid(P_PIDFD).
>
> /* v0 */
> Link: https://lore.kernel.org/lkml/20190724144651.28272-1-christian@brauner.io
>
> Thanks!
> Christian
>
> Christian Brauner (2):
> pidfd: add P_PIDFD to waitid()
> pidfd: add pidfd_wait tests
>
> include/linux/pid.h | 4 +
> include/uapi/linux/wait.h | 1 +
> kernel/exit.c | 25 ++-
> kernel/fork.c | 8 +
> kernel/signal.c | 7 +-
> tools/testing/selftests/pidfd/pidfd.h | 25 +++
> tools/testing/selftests/pidfd/pidfd_test.c | 14 --
> tools/testing/selftests/pidfd/pidfd_wait.c | 245 +++++++++++++++++++++
> 8 files changed, 311 insertions(+), 18 deletions(-)
> create mode 100644 tools/testing/selftests/pidfd/pidfd_wait.c
>
> --
> 2.22.0
>

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