kernel_optimize_test

Go to file

Quentin Perret 3ebd7b3841 sched/deadline: Fix reset_on_fork reporting of DL tasks [ Upstream commit f95091536f78971b269ec321b057b8d630b0ad8a ] It is possible for sched_getattr() to incorrectly report the state of the reset_on_fork flag when called on a deadline task. Indeed, if the flag was set on a deadline task using sched_setattr() with flags (SCHED_FLAG_RESET_ON_FORK \| SCHED_FLAG_KEEP_PARAMS), then p->sched_reset_on_fork will be set, but __setscheduler() will bail out early, which means that the dl_se->flags will not get updated by __setscheduler_params()->__setparam_dl(). Consequently, if sched_getattr() is then called on the task, __getparam_dl() will override kattr.sched_flags with the now out-of-date copy in dl_se->flags and report the stale value to userspace. To fix this, make sure to only copy the flags that are relevant to sched_deadline to and from the dl_se->flags field. Signed-off-by: Quentin Perret <qperret@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20210727101103.2729607-2-qperret@google.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-09-15 09:50:24 +02:00
arch	x86/reboot: Limit Dell Optiplex 990 quirk to early BIOS versions	2021-09-12 08:58:28 +02:00
block	blk-mq: clearing flush request reference in tags->rqs[]	2021-09-12 08:58:27 +02:00
certs	certs: add 'x509_revocation_list' to gitignore	2021-07-20 16:05:35 +02:00
crypto	crypto: sm2 - fix a memory leak in sm2	2021-07-14 16:56:06 +02:00
Documentation	dt-bindings: sifive-l2-cache: Fix 'select' matching	2021-09-03 10:09:26 +02:00
drivers	crypto: mxs-dcp - Check for DMA mapping errors	2021-09-15 09:50:24 +02:00
fs	fuse: fix illegal access to inode with reused nodeid	2021-09-08 08:49:02 +02:00
include	tty: drop termiox user definitions	2021-09-12 08:58:27 +02:00
init	sched/core: Initialize the idle task with preemption disabled	2021-07-14 16:55:50 +02:00
ipc	ipc/mqueue, msg, sem: avoid relying on a stack reference past its expiry	2021-05-26 12:06:54 +02:00
kernel	sched/deadline: Fix reset_on_fork reporting of DL tasks	2021-09-15 09:50:24 +02:00
lib	net: kcov: don't select SKB_EXTENSIONS when there is no NET	2021-09-12 08:58:26 +02:00
LICENSES
mm	mm/page_alloc: speed up the iteration of max_order	2021-09-12 08:58:26 +02:00
net	netfilter: nftables: clone set element expression template	2021-09-12 08:58:27 +02:00
samples	samples/bpf: Fix the error return code of xdp_redirect's main()	2021-07-14 16:56:23 +02:00
scripts	scripts/tracing: fix the bug that can't parse raw_trace_func	2021-08-12 13:22:12 +02:00
security	bpf: Add lockdown check for probe_write_user helper	2021-08-15 14:00:25 +02:00
sound	ALSA: usb-audio: Add registration quirk for JBL Quantum 800	2021-09-12 08:58:27 +02:00
tools	perf annotate: Fix jump parsing for C++ code.	2021-09-03 10:09:29 +02:00
usr
virt	KVM: Do not leak memory for duplicate debugfs directories	2021-08-12 13:22:17 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore	kbuild: generate Module.symvers only when vmlinux exists	2021-05-19 10:12:59 +02:00
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS	f2fs: move ioctl interface definitions to separated file	2021-05-19 10:13:00 +02:00
Makefile	Linux 5.10.64	2021-09-12 08:58:28 +02:00
README

README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.