Linus Torvalds c17112a5c4 core-process-v5.4 ... -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCXXe8mQAKCRCRxhvAZXjc ou7oAQCszihkNfpjORSSSOqenMDrxxDW++A7TIOLuq7UyZQl8QD+LM1wvT/xypfJ ORD9XX8+Wrv07AQn85fZBEFXGrnengk= =o+VL -----END PGP SIGNATURE----- Merge tag 'core-process-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux Pull pidfd/waitid updates from Christian Brauner: "This contains two features and various tests. First, it adds support for waiting on process through pidfds by adding the P_PIDFD type to the waitid() syscall. This completes the basic functionality of the pidfd api (cf. [1]). In the meantime we also have a new adition to the userspace projects that make use of the pidfd api. The qt project was nice enough to send a mail pointing out that they have a pr up to switch to the pidfd api (cf. [2]). Second, this tag contains an extension to the waitid() syscall to make it possible to wait on the current process group in a race free manner (even though the actual problem is very unlikely) by specifing 0 together with the P_PGID type. This extension traces back to a discussion on the glibc development mailing list. There are also a range of tests for the features above. Additionally, the test-suite which detected the pidfd-polling race we fixed in [3] is included in this tag" [1] https://lwn.net/Articles/794707/ [2] https://codereview.qt-project.org/c/qt/qtbase/+/108456 [3] commit b191d6491b ("pidfd: fix a poll race when setting exit_state") * tag 'core-process-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: waitid: Add support for waiting for the current process group tests: add pidfd poll tests tests: move common definitions and functions into pidfd.h pidfd: add pidfd_wait tests pidfd: add P_PIDFD to waitid()		2019-09-16 09:28:19 -07:00
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.gitignore	tests: add pidfd poll tests	2019-08-06 19:52:41 +02:00
Makefile	tests: add pidfd poll tests	2019-08-06 19:52:41 +02:00
pidfd_open_test.c	tests: move common definitions and functions into pidfd.h	2019-08-06 19:39:45 +02:00
pidfd_poll_test.c	tests: add pidfd poll tests	2019-08-06 19:52:41 +02:00
pidfd_test.c	core-process-v5.4	2019-09-16 09:28:19 -07:00
pidfd_wait.c	pidfd: add pidfd_wait tests	2019-08-06 19:39:30 +02:00
pidfd.h	tests: move common definitions and functions into pidfd.h	2019-08-06 19:39:45 +02:00