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author | Willem de Bruijn <willemb@google.com> | 2020-12-18 14:05:38 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-19 11:18:38 -0800 |
commit | 58169a52ebc9a733aeb5bea857bc5daa71a301bb (patch) | |
tree | 8aa1a1b62d408d9be09301fbae56af421755178e /arch/sparc/power | |
parent | 7cdf7c20e97141eadb05121cc521c8eff47e7d93 (diff) | |
download | linux-58169a52ebc9a733aeb5bea857bc5daa71a301bb.tar.bz2 |
epoll: add syscall epoll_pwait2
Add syscall epoll_pwait2, an epoll_wait variant with nsec resolution that
replaces int timeout with struct timespec. It is equivalent otherwise.
int epoll_pwait2(int fd, struct epoll_event *events,
int maxevents,
const struct timespec *timeout,
const sigset_t *sigset);
The underlying hrtimer is already programmed with nsec resolution.
pselect and ppoll also set nsec resolution timeout with timespec.
The sigset_t in epoll_pwait has a compat variant. epoll_pwait2 needs
the same.
For timespec, only support this new interface on 2038 aware platforms
that define __kernel_timespec_t. So no CONFIG_COMPAT_32BIT_TIME.
Link: https://lkml.kernel.org/r/20201121144401.3727659-3-willemdebruijn.kernel@gmail.com
Signed-off-by: Willem de Bruijn <willemb@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/sparc/power')
0 files changed, 0 insertions, 0 deletions