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Filename Latest commit message Latest commit date
Doug Anderson d9a2a3f2c2 ANDROID: of: Support CONFIG_CMDLINE_EXTEND config option
The old logic assumes CMDLINE_FROM_BOOTLOADER vs. CMDLINE_FORCE and
ignores CMDLINE_EXTEND.  Here's the old logic:

- CONFIG_CMDLINE_FORCE=true
    CONFIG_CMDLINE
- dt bootargs=non-empty:
    dt bootargs
- dt bootargs=empty, @data is non-empty string
    @data is left unchanged
- dt bootargs=empty, @data is empty string
    CONFIG_CMDLINE (or "" if that's not defined)

The new logic is now documented in of_fdt.h and is copied here for
reference:

- CONFIG_CMDLINE_FORCE=true
    CONFIG_CMDLINE
- CONFIG_CMDLINE_EXTEND=true, @data is non-empty string
    @data + dt bootargs (even if dt bootargs are empty)
- CONFIG_CMDLINE_EXTEND=true, @data is empty string
    CONFIG_CMDLINE + dt bootargs (even if dt bootargs are empty)
- CMDLINE_FROM_BOOTLOADER=true, dt bootargs=non-empty:
    dt bootargs
- CMDLINE_FROM_BOOTLOADER=true, dt bootargs=empty, @data is non-empty string
    @data is left unchanged
- CMDLINE_FROM_BOOTLOADER=true, dt bootargs=empty, @data is empty string
    CONFIG_CMDLINE (or "" if that's not defined)

Signed-off-by: Doug Anderson <dianders@chromium.org>
CC: devicetree-discuss@lists.ozlabs.org
CC: Grant Likely <grant.likely@secretlab.ca>
CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: Rob Herring <rob.herring@calxeda.com>
Bug: 120440972
Change-Id: I40ace250847f813358125dfcaa8998fd32cf7ea3
Signed-off-by: Colin Cross <ccross@android.com>
[AmitP: Folded following android-4.9 commit changes into this patch
        e820270abb5d ("ANDROID: of: fix CONFIG_CMDLINE_EXTEND")
        9a4a74055444 ("ANDROID: of: Fix build warnings")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
2019-05-03 10:39:58 -07:00
arch ANDROID: arm64: copy CONFIG_CMDLINE_EXTEND from ARM 2019-05-03 10:39:57 -07:00
block block: don't deal with discard limit in blkdev_issue_discard() 2018-10-18 07:23:40 -06:00
certs
crypto
Documentation Code of Conduct: Change the contact email address 2018-10-22 07:33:36 +01:00
drivers ANDROID: of: Support CONFIG_CMDLINE_EXTEND config option 2019-05-03 10:39:58 -07:00
firmware
fs fscache: Fix out of bound read in long cookie keys 2018-10-18 11:32:21 +02:00
include ANDROID: of: Support CONFIG_CMDLINE_EXTEND config option 2019-05-03 10:39:58 -07:00
init
ipc ipc/shm.c: use ERR_CAST() for shm_lock() error return 2018-10-05 16:32:04 -07:00
kernel Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-20 15:03:45 +02:00
lib test_ida: Fix lockdep warning 2018-10-15 16:31:29 -04:00
LICENSES LICENSES: Remove CC-BY-SA-4.0 license text 2018-10-18 11:28:50 +02:00
mm mremap: properly flush TLB before releasing the page 2018-10-18 11:30:52 +02:00
net ANDROID: net: xfrm: make PF_KEY SHA256 use RFC-compliant truncation. 2019-05-03 10:39:57 -07:00
samples samples: disable CONFIG_SAMPLES for UML 2018-10-11 02:15:46 +09:00
scripts ANDROID: Kbuild, LLVMLinux: allow overriding clang target triple 2019-05-03 10:39:56 -07:00
security
sound
tools Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-20 15:02:51 +02:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
build.config.cuttlefish.aarch64 ANDROID: defconfig / build config for cuttlefish 2019-05-03 10:39:56 -07:00
build.config.cuttlefish.x86_64 ANDROID: defconfig / build config for cuttlefish 2019-05-03 10:39:56 -07:00
COPYING
CREDITS
Kbuild
Kconfig
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 2019-05-03 10:39:56 -07:00
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.