kernel/arch/um/include/shared/sigio.h, branch linux-rolling-stableHosts the 0x221E linux distro kernel.https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-rolling-stable2025-03-20T08:28:44Zum: Rewrite the sigio workaround based on epoll and tgkill2025-03-20T08:28:44ZTiwei Bietiwei.btw@antgroup.com2025-03-15T16:19:08Zurn:sha1:33c9da5dfb18c2ff5a88d01aca2cf253cd0ac3bc
The existing sigio workaround implementation removes FDs from the
poll when events are triggered, requiring users to re-add them via
add_sigio_fd() after processing. This introduces a potential race
condition between FD removal in write_sigio_thread() and next_poll
update in __add_sigio_fd(), and is inefficient due to frequent FD
removal and re-addition. Rewrite the implementation based on epoll
and tgkill for improved efficiency and reliability.
Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20250315161910.4082396-2-tiwei.btw@antgroup.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
um: header debriding - sigio.h2021-12-21T20:31:36ZAl Viroviro@zeniv.linux.org.uk2021-09-20T21:33:01Zurn:sha1:4c1f795773b3ef6e206ef84bc6a928803fa31b7d
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
um: Add SPDX headers for files in arch/um/include2019-09-15T19:37:17ZAlex Dewaralex.dewar@gmx.co.uk2019-08-25T09:49:19Zurn:sha1:f2f4bf5aabadd6575f5daabcb0a2f506e3f5f68c
Convert files to use SPDX header. All files are licensed under the GPLv2.
Signed-off-by: Alex Dewar <alex.dewar@gmx.co.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
x86, um: take arch/um/include/* out of the way2008-10-23T05:55:19ZAl Viroviro@zeniv.linux.org.uk2008-08-17T17:48:37Zurn:sha1:8569c9140bd41089f9b6be8837ca421102714a90
We can't just plop asm/* into it - userland helpers are built with it
in search path and seeing asm/* show up there suddenly would be a bad
idea.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>