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Filename Latest commit message Latest commit date
Naohiro Aota e9a1379f92 x86/vdso: Fix flip/flop vdso build bug 
Two consecutive "make" on an already compiled kernel tree will show
different behavior:

$ make
  CALL    scripts/checksyscalls.sh
  CALL    scripts/atomic/check-atomics.sh
  DESCEND  objtool
  CHK     include/generated/compile.h
  VDSOCHK arch/x86/entry/vdso/vdso64.so.dbg
  VDSOCHK arch/x86/entry/vdso/vdso32.so.dbg
Kernel: arch/x86/boot/bzImage is ready  (#3)
  Building modules, stage 2.
  MODPOST 12 modules

$ make
make
  CALL    scripts/checksyscalls.sh
  CALL    scripts/atomic/check-atomics.sh
  DESCEND  objtool
  CHK     include/generated/compile.h
  VDSO    arch/x86/entry/vdso/vdso64.so.dbg
  OBJCOPY arch/x86/entry/vdso/vdso64.so
  VDSO2C  arch/x86/entry/vdso/vdso-image-64.c
  CC      arch/x86/entry/vdso/vdso-image-64.o
  VDSO    arch/x86/entry/vdso/vdso32.so.dbg
  OBJCOPY arch/x86/entry/vdso/vdso32.so
  VDSO2C  arch/x86/entry/vdso/vdso-image-32.c
  CC      arch/x86/entry/vdso/vdso-image-32.o
  AR      arch/x86/entry/vdso/built-in.a
  AR      arch/x86/entry/built-in.a
  AR      arch/x86/built-in.a
  GEN     .version
  CHK     include/generated/compile.h
  UPD     include/generated/compile.h
  CC      init/version.o
  AR      init/built-in.a
  LD      vmlinux.o
<snip>

This is causing "LD vmlinux" once every two times even without any
modifications. This is the same bug fixed in commit 92a4728608
("x86/boot: Fix if_changed build flip/flop bug"). Two "if_changed" cannot
be used in one target.

Fix this merging two commands into one function.

Fixes: 7ac8707479 ("x86/vdso: Switch to generic vDSO implementation")
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Link: https://lkml.kernel.org/r/20190712101556.17833-1-naohiro.aota@wdc.com
2019-07-12 17:35:07 +02:00
arch x86/vdso: Fix flip/flop vdso build bug 2019-07-12 17:35:07 +02:00
block for-5.3/block-20190708 2019-07-09 10:45:06 -07:00
certs Revert "Merge tag 'keys-acl-20190703' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs" 2019-07-10 18:43:43 -07:00
crypto USB / PHY patches for 5.3-rc1 2019-07-11 15:40:06 -07:00
Documentation chrome platform changes for v5.3 2019-07-11 18:45:29 -07:00
drivers chrome platform changes for v5.3 2019-07-11 18:45:29 -07:00
fs Char / Misc driver patches for 5.3-rc1 2019-07-11 15:34:05 -07:00
include chrome platform changes for v5.3 2019-07-11 18:45:29 -07:00
init It's been a relatively busy cycle for docs: 2019-07-09 12:34:26 -07:00
ipc
kernel Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching 2019-07-11 15:30:05 -07:00
lib Char / Misc driver patches for 5.3-rc1 2019-07-11 15:34:05 -07:00
LICENSES
mm Char / Misc driver patches for 5.3-rc1 2019-07-11 15:34:05 -07:00
net SCSI sg on 20190709 2019-07-11 15:17:41 -07:00
samples Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2019-07-11 10:55:49 -07:00
scripts Devicetree updates for v5.3: 2019-07-11 18:35:30 -07:00
security security/loadpin improvement 2019-07-11 14:42:44 -07:00
sound chrome platform changes for v5.3 2019-07-11 18:45:29 -07:00
tools Staging / IIO driver update for 5.3-rc1 2019-07-11 15:36:02 -07:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Devicetree updates for v5.3: 2019-07-11 18:35:30 -07:00
Makefile Linux 5.2 2019-07-07 15:41:56 -07:00
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.