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Fieah Lim c5128d78c1
cpuidle: enter_state: Don't needlessly calculate diff time 
Currently, ktime_us_delta() is invoked unconditionally to compute the
idle residency of the CPU, but it only makes sense to do that if a
valid idle state has been entered, so move the ktime_us_delta()
invocation after the entered_state >= 0 check.

While at it, merge two comment blocks in there into one and drop
a space between type casting of diff.

This patch has no functional changes.

Signed-off-by: Fieah Lim <kw@fieahl.im>
[ rjw: Changelog cleanup, comment format fix ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Adam W. Willis <return.of.octobot@gmail.com>
Signed-off-by: dreamisbaka <jolinux.g@gmail.com>
2021-08-21 16:12:58 +02:00
android ANDROID: Refresh ABI.xmls with libabigail 1.8.0-98bbf30d 2020-09-28 14:42:26 +01:00
arch arm64: Use optimized memcmp 2021-08-21 16:12:39 +02:00
block block: blk-mq: Silence align-mismatch warning 2021-08-21 16:10:47 +02:00
certs Merge remote-tracking branch 'origin/tmp-441e17f' into msm-kona 2018-09-05 14:58:16 -07:00
crypto Merge android-4.19-stable.136 (204dd19) into msm-4.19 2020-10-14 20:04:29 +05:30
Documentation Merge android-4.19-stable.149 (9ce79d9) into msm-4.19 2020-10-21 09:25:49 +05:30
drivers cpuidle: enter_state: Don't needlessly calculate diff time 2021-08-21 16:12:58 +02:00
firmware Fix built-in early-load Intel microcode alignment 2020-01-23 08:21:29 +01:00
fs fs: pstore: Import xiaomi changes 2021-08-21 16:10:46 +02:00
include selinux: Remove audit dependency 2021-08-21 16:11:54 +02:00
init init: Kconfig: Don't force DEBUG_KERNEL when EXPERT is enabled 2021-08-21 16:11:54 +02:00
ipc Restore sdcardfs feature 2020-08-21 15:15:18 +05:30
kernel trace: Add a CONFIG_DISABLE_TRACE_PRINTK option. 2021-08-21 16:10:48 +02:00
lib Merge android-4.19-stable.152 (13abe23) into msm-4.19 2020-10-28 17:52:20 +05:30
LICENSES LICENSES: Add ISC license text 2019-01-10 17:22:01 +02:00
mm Merge android-4.19-stable.152 (13abe23) into msm-4.19 2020-10-28 17:52:20 +05:30
net Merge "cfg80211: use same IR permissive rules for 6GHz band" 2020-11-11 11:31:26 -08:00
samples This is the 4.19.126 stable release 2020-06-03 09:23:15 +02:00
scripts setlocalversion: Never append a "+" to localversion 2021-08-21 16:11:54 +02:00
security selinux: Remove audit dependency 2021-08-21 16:11:54 +02:00
sound Merge android-4.19-stable.149 (9ce79d9) into msm-4.19 2020-10-21 09:25:49 +05:30
techpack techpack: display: Import xiaomi changes 2021-08-21 16:10:47 +02:00
tools This is the 4.19.152 stable release 2020-10-17 10:26:40 +02:00
usr initramfs: restore default compression behavior 2020-04-13 10:44:59 +02:00
virt Merge android-4.19-stable.149 (9ce79d9) into msm-4.19 2020-10-21 09:25:49 +05:30
.clang-format clang-format: Set IndentWrappedFunctionNames false 2018-08-01 18:38:51 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore arch: Import dts with xiaomi changes 2021-08-21 16:10:44 +02:00
.mailmap libnvdimm-for-4.19_misc 2018-08-25 18:13:10 -07:00
Android.bp Example kernel headers header_lib package 2020-01-18 11:53:58 -08:00
AndroidKernel.mk AndroidKernel: add TARGET_PREBUILT_INT_KERNEL_IMAGE 2019-08-02 20:31:09 +08:00
build.config.aarch64 ANDROID: use arm-linux-androidkernel- for CROSS_COMPILE_COMPAT 2020-10-02 00:18:00 +00:00
build.config.allmodconfig ANDROID: build.config.allmodconfig: Re-enable XFS_FS 2020-04-17 08:41:31 +00:00
build.config.allmodconfig.aarch64 ANDROID: drop KERNEL_DIR setting in build.config.common 2020-09-25 15:14:51 +08:00
build.config.allmodconfig.arm ANDROID: drop KERNEL_DIR setting in build.config.common 2020-09-25 15:14:51 +08:00
build.config.allmodconfig.x86_64 ANDROID: drop KERNEL_DIR setting in build.config.common 2020-09-25 15:14:51 +08:00
build.config.arm ANDROID: Add build.config files for ARM 32-bit 2020-03-16 17:43:55 +00:00
build.config.common ANDROID: build.config.common: enable LLVM=1 2020-10-01 20:10:11 +00:00
build.config.gki ANDROID: gki: Removed cf modules from gki_defconfig 2020-01-31 16:23:38 -08:00
build.config.gki-debug.aarch64 ANDROID: drop KERNEL_DIR setting in build.config.common 2020-09-25 15:14:51 +08:00
build.config.gki-debug.x86_64 ANDROID: drop KERNEL_DIR setting in build.config.common 2020-09-25 15:14:51 +08:00
build.config.gki.aarch64 ANDROID: GKI: prevent removal of monitored symbols 2020-09-29 11:48:43 +01:00
build.config.gki.x86_64 ANDROID: drop KERNEL_DIR setting in build.config.common 2020-09-25 15:14:51 +08:00
build.config.gki_kasan ANDROID: drop KERNEL_DIR setting in build.config.common 2020-09-25 15:14:51 +08:00
build.config.gki_kasan.aarch64 ANDROID: drop KERNEL_DIR setting in build.config.common 2020-09-25 15:14:51 +08:00
build.config.gki_kasan.x86_64 ANDROID: drop KERNEL_DIR setting in build.config.common 2020-09-25 15:14:51 +08:00
build.config.goldfish.arm ANDROID: build.config: enforce trace_printk check 2018-08-28 17:10:42 +05:30
build.config.goldfish.arm64 ANDROID: build.config: enforce trace_printk check 2018-08-28 17:10:42 +05:30
build.config.goldfish.mips ANDROID: build.config: enforce trace_printk check 2018-08-28 17:10:42 +05:30
build.config.goldfish.mips64 ANDROID: build.config: enforce trace_printk check 2018-08-28 17:10:42 +05:30
build.config.goldfish.x86 ANDROID: build.config: enforce trace_printk check 2018-08-28 17:10:42 +05:30
build.config.goldfish.x86_64 ANDROID: build.config: enforce trace_printk check 2018-08-28 17:10:42 +05:30
build.config.x86_64 ANDROID: refactor build.config files to remove duplication 2019-10-22 17:52:56 -07:00
COPYING COPYING: use the new text with points to the license files 2018-03-23 12:41:45 -06:00
CREDITS 9p: remove Ron Minnich from MAINTAINERS 2018-08-17 16:20:26 -07:00
gen_headers_arm.bp gen_headers*: Pass along audio techpack headers. 2021-08-21 16:06:51 +02:00
gen_headers_arm64.bp gen_headers*: Pass along audio techpack headers. 2021-08-21 16:06:51 +02:00
Kbuild qcacld-3.0: Enhance hang info feature 2020-10-31 14:27:01 -07:00
Kconfig kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt 2018-08-02 08:06:55 +09:00
kernel_headers.py Revert "kernel_headers: Disable headers matching" 2020-05-01 13:22:22 -07:00
MAINTAINERS Merge android-4.19-stable.149 (9ce79d9) into msm-4.19 2020-10-21 09:25:49 +05:30
Makefile Makefile: Disable stack conservation 2021-08-21 16:11:54 +02:00
README
verity_dev_keys.x509 x86_64_cuttlefish_defconfig: enable verity cert 2018-08-28 17:15:17 +05:30

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.
See Documentation/00-INDEX for a list of what is contained in each file.

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.