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0ae8088521
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Jin Qian 0ae8088521 ANDROID: uid_cputime: Adds accounting for the cputimes per uid. 
Adds proc files /proc/uid_cputime/show_uid_stat and
/proc/uid_cputime/remove_uid_range.

show_uid_stat lists the total utime and stime for the active as well as
terminated processes for each of the uids.

Writing a range of uids to remove_uid_range will delete the accounting
for all the uids within that range.

Bug: 120442023
Change-Id: I21d9210379da730b33ddc1a0ea663c8c9d2ac15b
Signed-off-by: Jin Qian <jinqian@google.com>
[AmitP: Refactored the original patch because upstream commit
        605dc2b31a ("tsacct: Convert obsolete cputime type to nsecs")
        made cputime_t type obsolete, so use u64 nanoseconds directly instead.
        Also folded following android-4.9 changes into this patch
        48a9906c0f ("ANDROID: proc: uid_cputime: create uids from kuids")
        453ac31cab ("ANDROID: proc: uid_cputime: fix show_uid_stat permission")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
[connoro: Used by batterystats.]
[astrachan: Folded in the file/kconfig rename and the following changes:
            da3687fbc393 ("ANDROID: uid_cputime: fix cputime overflow")
            71e3eb512d00 ("ANDROID: uid_cputime: Iterates over all the threads instead of processes.")
            c65f0080c300 ("ANDROID: uid_cputime: Check for the range while removing range of UIDs.")
            c8212458e3a5 ("ANDROID: uid_sys_stats: fix access of task_uid(task)")
            bb5ee21cc4dd ("ANDROID: uid_sys_stats: change to use rt_mutex")
            6dc5d8173a8c ("ANDROID: uid_sys_stats: check previous uid_entry before call find_or_register_uid")
            82b9872b3894 ("ANDROID: uid_sys_stats: Replace tasklist lock with RCU in uid_cputime_show")]
Signed-off-by: Alistair Strachan <astrachan@google.com>
2018-12-05 09:48:12 -08:00
arch ANDROID: cuttlefish_defconfig: Enable CONFIG_MMC 2018-12-05 09:48:12 -08:00
block block: Clear kernel memory before copying to user 2018-11-27 16:13:05 +01:00
certs export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR() 2018-08-22 23:21:44 +09:00
crypto crypto: user - fix leaking uninitialized memory to userspace 2018-11-21 09:19:24 +01:00
Documentation ANDROID: mm: add a field to store names for private anonymous memory 2018-12-05 09:48:11 -08:00
drivers ANDROID: uid_cputime: Adds accounting for the cputimes per uid. 2018-12-05 09:48:12 -08:00
firmware kbuild: remove all dummy assignments to obj- 2017-11-18 11:46:06 +09:00
fs ANDROID: mm: add a field to store names for private anonymous memory 2018-12-05 09:48:11 -08:00
include ANDROID: mmc: core: Add "ignore mmc pm notify" functionality 2018-12-05 09:48:12 -08:00
init ANDROID: sched: fair/tune: Add schedtune with cgroups interface 2018-10-26 11:57:46 +01:00
ipc ipc/shm.c: use ERR_CAST() for shm_lock() error return 2018-10-05 16:32:04 -07:00
kernel ANDROID: mm: add a field to store names for private anonymous memory 2018-12-05 09:48:11 -08:00
lib lib/raid6: Fix arm64 test build 2018-11-27 16:13:05 +01:00
LICENSES LICENSES: Remove CC-BY-SA-4.0 license text 2018-10-18 11:28:50 +02:00
mm ANDROID: mm: add a field to store names for private anonymous memory 2018-12-05 09:48:11 -08:00
net UPSTREAM: tcp: start receiver buffer autotuning sooner 2018-12-05 09:48:11 -08:00
samples samples: disable CONFIG_SAMPLES for UML 2018-10-11 02:15:46 +09:00
scripts ANDROID: Kbuild, LLVMLinux: allow overriding clang target triple 2018-12-05 09:47:58 -08:00
security apparmor: Fix uninitialized value in aa_split_fqname 2018-11-27 16:13:00 +01:00
sound ALSA: hda/ca0132 - Call pci_iounmap() instead of iounmap() 2018-11-27 16:13:09 +01:00
tools perf tools: Do not zero sample_id_all for group members 2018-11-27 16:13:06 +01:00
usr initramfs: move gen_initramfs_list.sh from scripts/ to usr/ 2018-08-22 23:21:44 +09:00
virt KVM: arm64: Fix caching of host MDCR_EL2 value 2018-11-13 11:08:47 -08:00
.clang-format clang-format: Set IndentWrappedFunctionNames false 2018-08-01 18:38:51 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore Kbuild updates for v4.17 (2nd) 2018-04-15 17:21:30 -07:00
.mailmap libnvdimm-for-4.19_misc 2018-08-25 18:13:10 -07:00
build.config.cuttlefish.aarch64 ANDROID: defconfig / build config for cuttlefish 2018-12-05 09:47:58 -08:00
build.config.cuttlefish.x86_64 ANDROID: defconfig / build config for cuttlefish 2018-12-05 09:47:58 -08:00
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
Kbuild Kbuild updates for v4.15 2017-11-17 17:45:29 -08:00
Kconfig kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt 2018-08-02 08:06:55 +09:00
MAINTAINERS MAINTAINERS: Add an entry for the code of conduct 2018-10-22 07:33:36 +01:00
Makefile ANDROID: Kbuild, LLVMLinux: allow overriding clang target triple 2018-12-05 09:47:58 -08:00
README Docs: Added a pointer to the formatted docs to README 2018-03-21 09:02:53 -06:00

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.