linux-kernel - [PATCH v3 0/2] add epoll

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Date:   Wed, 18 Nov 2020 09:46:14 -0500
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     linux-fsdevel@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, viro@...iv.linux.org.uk,
        akpm@...ux-foundation.org, soheil.kdev@...il.com, arnd@...db.de,
        shuochen@...gle.com, linux-man@...r.kernel.org,
        Willem de Bruijn <willemb@...gle.com>
Subject: [PATCH v3 0/2] add epoll_pwait2 syscall

From: Willem de Bruijn <willemb@...gle.com>

Enable nanosecond timeouts for epoll.

Analogous to pselect and ppoll, introduce an epoll_wait syscall
variant that takes a struct timespec instead of int timeout.

See patch 1 for more details.

patch 1: new syscall
patch 2: selftest

Willem de Bruijn (2):
  epoll: add nsec timeout support with epoll_pwait2
  selftests/filesystems: expand epoll with epoll_pwait2

 arch/alpha/kernel/syscalls/syscall.tbl        |   1 +
 arch/arm/tools/syscall.tbl                    |   1 +
 arch/arm64/include/asm/unistd.h               |   2 +-
 arch/arm64/include/asm/unistd32.h             |   2 +
 arch/ia64/kernel/syscalls/syscall.tbl         |   1 +
 arch/m68k/kernel/syscalls/syscall.tbl         |   1 +
 arch/microblaze/kernel/syscalls/syscall.tbl   |   1 +
 arch/mips/kernel/syscalls/syscall_n32.tbl     |   1 +
 arch/mips/kernel/syscalls/syscall_n64.tbl     |   1 +
 arch/mips/kernel/syscalls/syscall_o32.tbl     |   1 +
 arch/parisc/kernel/syscalls/syscall.tbl       |   1 +
 arch/powerpc/kernel/syscalls/syscall.tbl      |   1 +
 arch/s390/kernel/syscalls/syscall.tbl         |   1 +
 arch/sh/kernel/syscalls/syscall.tbl           |   1 +
 arch/sparc/kernel/syscalls/syscall.tbl        |   1 +
 arch/x86/entry/syscalls/syscall_32.tbl        |   1 +
 arch/x86/entry/syscalls/syscall_64.tbl        |   1 +
 arch/xtensa/kernel/syscalls/syscall.tbl       |   1 +
 fs/eventpoll.c                                | 106 +++++++++++++++---
 include/linux/compat.h                        |   6 +
 include/linux/syscalls.h                      |   5 +
 include/uapi/asm-generic/unistd.h             |   4 +-
 kernel/sys_ni.c                               |   2 +
 .../filesystems/epoll/epoll_wakeup_test.c     |  70 ++++++++++++
 24 files changed, 193 insertions(+), 20 deletions(-)

-- 
2.29.2.454.gaff20da3a2-goog