Commit Graph

1286 Commits

Author SHA1 Message Date
Linus Torvalds
2bd6bf03f4 Linux 4.14-rc1 2017-09-16 15:47:51 -07:00
Markus Trippelsdorf
df85b2d767 firmware: Restore support for built-in firmware
Commit 5620a0d1aa ("firmware: delete in-kernel firmware") removed the
entire firmware directory.  Unfortunately it thereby also removed the
support for built-in firmware.

This restores the ability to build firmware directly into the kernel by
pruning the original Makefile to the necessary minimum.  The default for
EXTRA_FIRMWARE_DIR is now the standard directory /lib/firmware/.

Fixes: 5620a0d1aa ("firmware: delete in-kernel firmware")
Signed-off-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Acked-by: Greg K-H <gregkh@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-09-16 10:58:48 -07:00
Linus Torvalds
b38923a068 Firmware removal patch for 4.14-rc1
Many many years ago (at the kernel summit in Boston), we all came to the
 agreement that the firmware/ tree should be dropped from the kernel, and
 everyone use the linux-firmware package instead.  For some minor reason,
 David Woodhouse didn't send the pull request at that point in time, and
 everyone forgot about this.
 
 The topic came up in the hallway track at the Plumbers conference this
 week, so here's a single patch that drops the whole firmware tree.  The
 last firmware update was back in 2013, and all distros have been using
 linux-firmware instead since at least that year, if not before.  The
 only commits to that directory since 2013 was some kbuild fixups for
 various build tool issues.
 
 So lets finally drop this, we don't need to lug them around in the
 kernel source tree anymore, especially as no one wants or uses them.
 
 This has passed build testing with 0-day, I don't think it made it into
 linux-next this week, but I figured it was good to get in before
 4.14-rc1 was out.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'firmware_removal-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull firmware removal from Greg KH:
 "Many many years ago (at the kernel summit in Boston), we all came to
  the agreement that the firmware/ tree should be dropped from the
  kernel, and everyone use the linux-firmware package instead. For some
  minor reason, David Woodhouse didn't send the pull request at that
  point in time, and everyone forgot about this.

  The topic came up in the hallway track at the Plumbers conference this
  week, so here's a single patch that drops the whole firmware tree. The
  last firmware update was back in 2013, and all distros have been using
  linux-firmware instead since at least that year, if not before. The
  only commits to that directory since 2013 was some kbuild fixups for
  various build tool issues.

  So lets finally drop this, we don't need to lug them around in the
  kernel source tree anymore, especially as no one wants or uses them.

  This has passed build testing with 0-day, I don't think it made it
  into linux-next this week, but I figured it was good to get in before
  4.14-rc1 was out"

* tag 'firmware_removal-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  firmware: delete in-kernel firmware
2017-09-15 12:58:55 -07:00
Greg Kroah-Hartman
5620a0d1aa firmware: delete in-kernel firmware
The last firmware change for the in-kernel firmware source code was back
in 2013.  Everyone has been relying on the out-of-tree linux-firmware
package for a long long time.

So let's drop it, it's baggage we don't need to keep dragging around
(and having to fix random kbuild issues over time...)

Cc: Kyle McMartin <kyle@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Marek <mmarek@suse.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-09-14 14:49:41 -07:00
Linus Torvalds
a2bc8dea9e Kbuild updates for v4.14
- Use Make-builtin $(abspath ...) helper to get absolute path
 
 - Add W=2 extra warning option to detect unused macros
 
 - Use more KCONFIG_CONFIG instead hard-coded .config
 
 - Fix bugs of tar*-pkg targets
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Merge tag 'kbuild-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Use Make-builtin $(abspath ...) helper to get absolute path

 - Add W=2 extra warning option to detect unused macros

 - Use more KCONFIG_CONFIG instead hard-coded .config

 - Fix bugs of tar*-pkg targets

* tag 'kbuild-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: buildtar: do not print successful message if tar returns error
  kbuild: buildtar: fix tar error when CONFIG_MODULES is disabled
  kbuild: Use KCONFIG_CONFIG in buildtar
  Kbuild: enable -Wunused-macros warning for "make W=2"
  kbuild: use $(abspath ...) instead of $(shell cd ... && /bin/pwd)
2017-09-14 13:46:33 -07:00
Linus Torvalds
81a84ad3cb Merge branch 'docs-next' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
 "After a fair amount of churn in the last couple of cycles, docs are
  taking it easier this time around. Lots of fixes and some new
  documentation, but nothing all that radical. Perhaps the most
  interesting change for many is the scripts/sphinx-pre-install tool
  from Mauro; it will tell you exactly which packages you need to
  install to get a working docs toolchain on your system.

  There are two little patches reaching outside of Documentation/; both
  just tweak kerneldoc comments to eliminate warnings and fix some
  dangling doc pointers"

* 'docs-next' of git://git.lwn.net/linux: (52 commits)
  Documentation/sphinx: fix kernel-doc decode for non-utf-8 locale
  genalloc: Fix an incorrect kerneldoc comment
  doc: Add documentation for the genalloc subsystem
  assoc_array: fix path to assoc_array documentation
  kernel-doc parser mishandles declarations split into lines
  docs: ReSTify table of contents in core.rst
  docs: process: drop git snapshots from applying-patches.rst
  Documentation:input: fix typo
  swap: Remove obsolete sentence
  sphinx.rst: Allow Sphinx version 1.6 at the docs
  docs-rst: fix verbatim font size on tables
  Documentation: stable-kernel-rules: fix broken git urls
  rtmutex: update rt-mutex
  rtmutex: update rt-mutex-design
  docs: fix minimal sphinx version in conf.py
  docs: fix nested numbering in the TOC
  NVMEM documentation fix: A minor typo
  docs-rst: pdf: use same vertical margin on all Sphinx versions
  doc: Makefile: if sphinx is not found, run a check script
  docs: Fix paths in security/keys
  ...
2017-09-03 21:07:29 -07:00
Linus Torvalds
569dbb88e8 Linux 4.13 2017-09-03 13:56:17 -07:00
Masahiro Yamada
8e9b466799 kbuild: use $(abspath ...) instead of $(shell cd ... && /bin/pwd)
Kbuild conventionally uses $(shell cd ... && /bin/pwd) idiom to get
the absolute path of the directory because GNU Make 3.80, the minimal
supported version at that time, did not support $(abspath ...) or
$(realpath ...).

Commit 37d69ee308 ("docs: bump minimal GNU Make version to 3.81")
dropped the GNU Make 3.80 support, so we are now allowed to use those
make-builtin helpers.

This conversion will provide better portability without relying on
the pwd command or its location /bin/pwd.

I am intentionally using $(realpath ...) instead $(abspath ...) in
some places.  The difference between the two is $(realpath ...)
returns an empty string if the given path does not exist.  It is
convenient in places where we need to error-out if the makefile fails
to create an output directory.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Thierry Reding <treding@nvidia.com>
2017-09-01 08:50:32 +09:00
Linus Torvalds
cc4a41fe55 Linux 4.13-rc7 2017-08-27 17:20:40 -07:00
Linus Torvalds
f7bbf0754b Kbuild fixes for v4.13
- fix linker script regression caused by dead code elimination support
 
 - fix typos and outdated comments
 
 - specify kselftest-clean as a PHONY target
 
 - fix "make dtbs_install" when $(srctree) includes shell special
   characters like '~'
 
 - Move -fshort-wchar to the global option list because defining it
   partially emits warnings
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Merge tag 'kbuild-fixes-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - fix linker script regression caused by dead code elimination support

 - fix typos and outdated comments

 - specify kselftest-clean as a PHONY target

 - fix "make dtbs_install" when $(srctree) includes shell special
   characters like '~'

 - Move -fshort-wchar to the global option list because defining it
   partially emits warnings

* tag 'kbuild-fixes-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: update comments of Makefile.asm-generic
  kbuild: Do not use hyphen in exported variable name
  Makefile: add kselftest-clean to PHONY target list
  Kbuild: use -fshort-wchar globally
  fixdep: trivial: typo fix and correction
  kbuild: trivial cleanups on the comments
  kbuild: linker script do not match C names unless LD_DEAD_CODE_DATA_ELIMINATION is configured
2017-08-24 14:22:27 -07:00
Shuah Khan
801d2e9f1c Makefile: add kselftest-clean to PHONY target list
kselftest-clean isn't in the PHONY target list. Add it.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-08-21 09:05:59 +09:00
Arnd Bergmann
8c97023cf0 Kbuild: use -fshort-wchar globally
Commit 971a69db7d ("Xen: don't warn about 2-byte wchar_t in efi")
added the --no-wchar-size-warning to the Makefile to avoid this
harmless warning:

arm-linux-gnueabi-ld: warning: drivers/xen/efi.o uses 2-byte wchar_t yet the output is to use 4-byte wchar_t; use of wchar_t values across objects may fail

Changing kbuild to use thin archives instead of recursive linking
unfortunately brings the same warning back during the final link.

The kernel does not use wchar_t string literals at this point, and
xen does not use wchar_t at all (only efi_char16_t), so the flag
has no effect, but as pointed out by Jan Beulich, adding a wchar_t
string literal would be bad here.

Since wchar_t is always defined as u16, independent of the toolchain
default, always passing -fshort-wchar is correct and lets us
remove the Xen specific hack along with fixing the warning.

Link: https://patchwork.kernel.org/patch/9275217/
Fixes: 971a69db7d ("Xen: don't warn about 2-byte wchar_t in efi")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-08-21 09:05:59 +09:00
Linus Torvalds
14ccee78fc Linux 4.13-rc6 2017-08-20 14:13:52 -07:00
Linus Torvalds
ef954844c7 Linux 4.13-rc5 2017-08-13 16:01:32 -07:00
Cao jin
312a3d0918 kbuild: trivial cleanups on the comments
This is a bunch of trivial fixes and cleanups.

Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-08-10 00:58:20 +09:00
Linus Torvalds
aae4e7a8bc Linux 4.13-rc4 2017-08-06 18:44:49 -07:00
Linus Torvalds
16f73eb02d Linux 4.13-rc3 2017-07-30 12:40:36 -07:00
Linus Torvalds
520eccdfe1 Linux 4.13-rc2 2017-07-23 16:15:17 -07:00
Mauro Carvalho Chehab
18afab8c1d docs: Makefile: remove no-ops targets
After removal of DocBook, those targets are bogus.

Reported-by: Jim Davis <jim.epost@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-07-23 15:50:48 -06:00
Linus Torvalds
5771a8c088 Linux v4.13-rc1 2017-07-15 15:22:10 -07:00
Linus Torvalds
80fc623809 Kbuild updates for v4.13 (2nd)
- Move generic-y of exported headers to uapi/asm/Kbuild
   for complete de-coupling of UAPI
 
 - Clean up scripts/Makefile.headersinst
 
 - Fix host programs for 32 bit machine with XFS file system
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Merge tag 'kbuild-v4.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull more Kbuild updates from Masahiro Yamada:

 - Move generic-y of exported headers to uapi/asm/Kbuild for complete
   de-coupling of UAPI

 - Clean up scripts/Makefile.headersinst

 - Fix host programs for 32 bit machine with XFS file system

* tag 'kbuild-v4.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (29 commits)
  kbuild: Enable Large File Support for hostprogs
  kbuild: remove wrapper files handling from Makefile.headersinst
  kbuild: split exported generic header creation into uapi-asm-generic
  kbuild: do not include old-kbuild-file from Makefile.headersinst
  xtensa: move generic-y of exported headers to uapi/asm/Kbuild
  unicore32: move generic-y of exported headers to uapi/asm/Kbuild
  tile: move generic-y of exported headers to uapi/asm/Kbuild
  sparc: move generic-y of exported headers to uapi/asm/Kbuild
  sh: move generic-y of exported headers to uapi/asm/Kbuild
  parisc: move generic-y of exported headers to uapi/asm/Kbuild
  openrisc: move generic-y of exported headers to uapi/asm/Kbuild
  nios2: move generic-y of exported headers to uapi/asm/Kbuild
  nios2: remove unneeded arch/nios2/include/(generated/)asm/signal.h
  microblaze: move generic-y of exported headers to uapi/asm/Kbuild
  metag: move generic-y of exported headers to uapi/asm/Kbuild
  m68k: move generic-y of exported headers to uapi/asm/Kbuild
  m32r: move generic-y of exported headers to uapi/asm/Kbuild
  ia64: remove redundant generic-y += kvm_para.h from asm/Kbuild
  hexagon: move generic-y of exported headers to uapi/asm/Kbuild
  h8300: move generic-y of exported headers to uapi/asm/Kbuild
  ...
2017-07-13 13:37:57 -07:00
Linus Torvalds
bd664f6b3e disable new gcc-7.1.1 warnings for now
I made the mistake of upgrading my desktop to the new Fedora 26 that
comes with gcc-7.1.1.

There's nothing wrong per se that I've noticed, but I now have 1500
lines of warnings, mostly from the new format-truncation warning
triggering all over the tree.

We use 'snprintf()' and friends in a lot of places, and often know that
the numbers are fairly small (ie a controller index or similar), but gcc
doesn't know that, and sees an 'int', and thinks that it could be some
huge number.  And then complains when our buffers are not able to fit
the name for the ten millionth controller.

These warnings aren't necessarily bad per se, and we probably want to
look through them subsystem by subsystem, but at least during the merge
window they just mean that I can't even see if somebody is introducing
any *real* problems when I pull.

So warnings disabled for now.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-07-12 19:25:47 -07:00
Uwe Kleine-König
d7f14c66c2 kbuild: Enable Large File Support for hostprogs
This fixes the following build error for me when building on an 32 bit
machine using an XFS file system:

	$ make scripts/basic/fixdep
	  HOSTCC  scripts/basic/fixdep
	fixdep: error fstat'ing depfile: scripts/basic/.fixdep.d: Value too large for defined data type

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-07-11 21:33:54 +09:00
Masahiro Yamada
a9d9a400e0 kbuild: split exported generic header creation into uapi-asm-generic
When we install headers, we are interested only in headers under uapi
directories.  Split out uapi-asm-generic target and make headers_install
depend on it.  It will avoid generating unneeded asm-generic wrappers.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-07-11 21:33:54 +09:00
Masahiro Yamada
a8ff49a1d9 kbuild: pass dst= to Makefile.headersinst from top Makefile
We can always pass dst= from the top Makefile.  This will simplify
the logic in Makefile.headersinst.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-07-10 03:43:19 +09:00
Masahiro Yamada
0f042eea0a kbuild: fix comment about dst of headers_{install, check}_all
Commit 61562f981e ("uapi: export all arch specifics directories")
changed the dst from asm-<arch> to arch-<arch> for headers_install_all
or headers_check_all.  Update the comment.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-07-10 03:43:18 +09:00
Linus Torvalds
98ced886dd Kbuild thin archives updates for v4.13
Thin archives migration by Nicholas Piggin.
 
 THIN_ARCHIVES has been available for a while as an optional feature
 only for PowerPC architecture, but we do not need two different
 intermediate-artifact schemes.
 
 Using thin archives instead of conventional incremental linking has
 various advantages:
  - save disk space for builds
  - speed-up building a little
  - fix some link issues (for example, allyesconfig on ARM) due to
    more flexibility for the final linking
  - work better with dead code elimination we are planning
 
 As discussed before, this migration has been done unconditionally
 so that any problems caused by this will show up with "git bisect".
 
 With testing with 0-day and linux-next, some architectures actually
 showed up problems, but they were trivial and all fixed now.
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Merge tag 'kbuild-thinar-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild thin archives updates from Masahiro Yamada:
 "Thin archives migration by Nicholas Piggin.

  THIN_ARCHIVES has been available for a while as an optional feature
  only for PowerPC architecture, but we do not need two different
  intermediate-artifact schemes.

  Using thin archives instead of conventional incremental linking has
  various advantages:

   - save disk space for builds

   - speed-up building a little

   - fix some link issues (for example, allyesconfig on ARM) due to more
     flexibility for the final linking

   - work better with dead code elimination we are planning

  As discussed before, this migration has been done unconditionally so
  that any problems caused by this will show up with "git bisect".

  With testing with 0-day and linux-next, some architectures actually
  showed up problems, but they were trivial and all fixed now"

* tag 'kbuild-thinar-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  tile: remove unneeded extra-y in Makefile
  kbuild: thin archives make default for all archs
  x86/um: thin archives build fix
  tile: thin archives fix linking
  ia64: thin archives fix linking
  sh: thin archives fix linking
  kbuild: handle libs-y archives separately from built-in.o archives
  kbuild: thin archives use P option to ar
  kbuild: thin archives final link close --whole-archives option
  ia64: remove unneeded extra-y in Makefile.gate
  tile: fix dependency and .*.cmd inclusion for incremental build
  sparc64: Use indirect calls in hamming weight stubs
2017-07-07 15:11:12 -07:00
Linus Torvalds
58f051fc98 Kbuild updates for v4.13
- Clean up Makefiles and scripts
 
 - Improve clang support
 
 - Remove unneeded genhdr-y syntax
 
 - Remove unneeded cc-option-align macro
 
 - Introduce __cc-option macro and use it to fix x86 boot code compiler flags
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Merge tag 'kbuild-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Clean up Makefiles and scripts

 - Improve clang support

 - Remove unneeded genhdr-y syntax

 - Remove unneeded cc-option-align macro

 - Introduce __cc-option macro and use it to fix x86 boot code compiler
   flags

* tag 'kbuild-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: improve comments on KBUILD_SRC
  x86/build: Specify stack alignment for clang
  x86/build: Use __cc-option for boot code compiler options
  kbuild: Add __cc-option macro
  kbuild: remove cc-option-align
  kbuild: replace genhdr-y with generated-y
  kbuild: clang: Disable 'address-of-packed-member' warning
  kbuild: remove duplicated arch/*/include/generated/uapi include path
  kbuild: speed up checksyscalls.sh
  kbuild: simplify silent build (-s) detection
2017-07-07 14:09:24 -07:00
Linus Torvalds
650fc870a2 There has been a fair amount of activity in the docs tree this time
around.  Highlights include:
 
  - Conversion of a bunch of security documentation into RST
 
  - The conversion of the remaining DocBook templates by The Amazing
    Mauro Machine.  We can now drop the entire DocBook build chain.
 
  - The usual collection of fixes and minor updates.
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Merge tag 'docs-4.13' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "There has been a fair amount of activity in the docs tree this time
  around. Highlights include:

   - Conversion of a bunch of security documentation into RST

   - The conversion of the remaining DocBook templates by The Amazing
     Mauro Machine. We can now drop the entire DocBook build chain.

   - The usual collection of fixes and minor updates"

* tag 'docs-4.13' of git://git.lwn.net/linux: (90 commits)
  scripts/kernel-doc: handle DECLARE_HASHTABLE
  Documentation: atomic_ops.txt is core-api/atomic_ops.rst
  Docs: clean up some DocBook loose ends
  Make the main documentation title less Geocities
  Docs: Use kernel-figure in vidioc-g-selection.rst
  Docs: fix table problems in ras.rst
  Docs: Fix breakage with Sphinx 1.5 and upper
  Docs: Include the Latex "ifthen" package
  doc/kokr/howto: Only send regression fixes after -rc1
  docs-rst: fix broken links to dynamic-debug-howto in kernel-parameters
  doc: Document suitability of IBM Verse for kernel development
  Doc: fix a markup error in coding-style.rst
  docs: driver-api: i2c: remove some outdated information
  Documentation: DMA API: fix a typo in a function name
  Docs: Insert missing space to separate link from text
  doc/ko_KR/memory-barriers: Update control-dependencies example
  Documentation, kbuild: fix typo "minimun" -> "minimum"
  docs: Fix some formatting issues in request-key.rst
  doc: ReSTify keys-trusted-encrypted.txt
  doc: ReSTify keys-request-key.txt
  ...
2017-07-03 21:13:25 -07:00
Linus Torvalds
6f7da29041 Linux 4.12 2017-07-02 16:07:02 -07:00
Cao jin
c4e6fff1ae kbuild: improve comments on KBUILD_SRC
Original comments is confusing on "OBJ directory", make it clear.
Bonus: move comments close to what it wants to comment.

Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-07-03 08:03:10 +09:00
Nicholas Piggin
3a166fc2d4 kbuild: handle libs-y archives separately from built-in.o archives
The thin archives build currently puts all lib.a and built-in.o
files together and links them with --whole-archive.

This works because thin archives can recursively refer to thin
archives. However some architectures include libgcc.a, which may
not be a thin archive, or it may not be constructed with the "P"
option, in which case its contents do not get linked correctly.

So don't pull .a libs into the root built-in.o archive. These
libs should already have symbol tables and indexes built, so they
can be direct linker inputs. Move them out of the --whole-archive
option, which restore the conditional linking behaviour of lib.a
to thin archives builds.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-06-30 09:03:03 +09:00
Linus Torvalds
c0bc126f97 Linux 4.12-rc7 2017-06-25 18:30:05 -07:00
Matthias Kaehlcke
9f3f1fd299 kbuild: Add __cc-option macro
cc-option uses KBUILD_CFLAGS and KBUILD_CPPFLAGS when it determines
whether an option is supported or not. This is fine for options used to
build the kernel itself, however some components like the x86 boot code
use a different set of flags.

Add the new macro __cc-option which is a more generic version of
cc-option with additional parameters. One parameter is the compiler
with which the check should be performed, the other the compiler options
to be used instead KBUILD_C*FLAGS.

Refactor cc-option and hostcc-option to use __cc-option and move
hostcc-option to scripts/Kbuild.include.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Suggested-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Michal Marek <mmarek@suse.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-06-25 12:47:55 +09:00
Linus Torvalds
bb9b8fd26b Kbuild fixes for v4.12 (2nd)
- fix warnings of host programs
 
 - fix "make tags" when COMPILE_SOURCE=1 is specified along with O=
 
 - clarify help message of C=1 option
 
 - fix dependency for ncurses compatibility check
 
 - fix "make headers_install" for fakechroot environment
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Merge tag 'kbuild-fixes-v4.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:
 "Nothing scary, just some random fixes:

   - fix warnings of host programs

   - fix "make tags" when COMPILED_SOURCE=1 is specified along with O=

   - clarify help message of C=1 option

   - fix dependency for ncurses compatibility check

   - fix "make headers_install" for fakechroot environment"

* tag 'kbuild-fixes-v4.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kconfig: fix sparse warnings in nconfig
  kbuild: fix header installation under fakechroot environment
  kconfig: Check for libncurses before menuconfig
  Kbuild: tiny correction on `make help`
  tags: honor COMPILED_SOURCE with apart output directory
  genksyms: add printf format attribute to error_with_pos()
2017-06-24 16:18:00 -07:00
Jonathan Corbet
52b3f239bb Docs: clean up some DocBook loose ends
There were a few bits and pieces left over from the now-disused DocBook
toolchain; git rid of them.

Reported-by: Markus Heiser <markus.heiser@darmarit.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-06-23 14:17:38 -06:00
Matthias Kaehlcke
bfb38988c5 kbuild: clang: Disable 'address-of-packed-member' warning
clang generates plenty of these warnings in different parts of the code,
to an extent that the warnings are little more than noise. Disable the
'address-of-packed-member' warning.

Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-06-22 08:52:21 +09:00
Linus Torvalds
41f1830f5a Linux 4.12-rc6 2017-06-19 22:19:37 +08:00
Linus Torvalds
32c1431eea Linux 4.12-rc5 2017-06-11 16:48:20 -07:00
Masahiro Yamada
f8224f7f48 kbuild: remove duplicated arch/*/include/generated/uapi include path
Commit 90ac086bca ("Makefile: include arch/*/include/generated/uapi
before .../generated") introduced this for bisect'ability.  The commit
chose to promote arch/*/include/generated/uapi in the search path
rather than cleaning stale headers.

After all, we found that approach was not enough, and ended up with
cleaning stale headers by commit cda2c65f98 ("kbuild: Remove stale
asm-generic wrappers").

So, the extra search path is no longer needed because Kbuild invokes
scripts/Makefile.asm-generic and remove stale headers before it starts
descending.

This commit is also reverting commit dc33db7c33 ("Kbuild: avoid
duplicate include path") because we have no more duplicated path.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-06-10 01:31:47 +09:00
Cao jin
9ba26a7283 Kbuild: tiny correction on make help
The help info of `make C=1` is little confusing, make it clear.

Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-06-06 23:57:48 +09:00
Masahiro Yamada
6f0fa58e45 kbuild: simplify silent build (-s) detection
This allows to detect -s (--silent) option without checking GNU Make
version.

As commit e36aaea289 ("kbuild: Fix silent builds with make-4")
pointed out, GNU Make 4.x changed the way/order it presents the
command line options into MAKEFLAGS.

In Make 3.8x, 's' is always the first in a group of short options.
The group may be prefixed with '-' in some cases.

In Make 4.x, 's' is always the last in a group of short options.

As commit e6ac89fabd ("kbuild: Correctly deal with make options
which contain an 's'") addressed, we also need to deal with long
options that contain 's', like --warn-undefined-variables.

Test cases:

[1] command line input:    make --silent
     -> MAKEFLAGS for Make 3.8x:    s
     -> MAKEFLAGS for Make 4.x :    s

[2] command line input:    make -srR
     -> MAKEFLAGS for Make 3.8x:    sRr
     -> MAKEFLAGS for Make 4.x :    rRs

[3] command line input:    make -s -rR --warn-undefined-variables
     -> MAKEFLAGS for Make 3.8x:    --warn-undefined-variables -sRr
     -> MAKEFLAGS for Make 4.x :    rRs --warn-undefined-variables

My idea to cater to all the cases more easily is to filter out long
options (--%), then search 's' with $(findstring ...).  This way will
be more future-proof even if future versions of Make put 's' in the
middle of the group.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-06-06 09:01:12 +09:00
Linus Torvalds
3c2993b8c6 Linux 4.12-rc4 2017-06-04 16:47:43 -07:00
Linus Torvalds
5ed02dbb49 Linux 4.12-rc3 2017-05-28 17:20:53 -07:00
Linus Torvalds
08332893e3 Linux 4.12-rc2 2017-05-21 19:30:23 -07:00
Jonathan Corbet
6312811be2 Merge remote-tracking branch 'mauro-exp/docbook3' into death-to-docbook
Mauro says:

This patch series convert the remaining DocBooks to ReST.

The first version was originally
send as 3 patch series:

   [PATCH 00/36] Convert DocBook documents to ReST
   [PATCH 0/5] Convert more books to ReST
   [PATCH 00/13] Get rid of DocBook

The lsm book was added as if it were a text file under
Documentation. The plan is to merge it with another file
under Documentation/security, after both this series and
a security Documentation patch series gets merged.

It also adjusts some Sphinx-pedantic errors/warnings on
some kernel-doc markups.

I also added some patches here to add PDF output for all
existing ReST books.
2017-05-18 11:03:08 -06:00
Masahiro Yamada
05d8cba4a1 kbuild: skip install/check of headers right under uapi directories
Since commit 61562f981e ("uapi: export all arch specifics
directories"), "make INSTALL_HDR_PATH=$root/usr headers_install"
deletes standard glibc headers and others in $(root)/usr/include.

The cause of the issue is that headers_install now starts descending
from arch/$(hdr-arch)/include/uapi with $(root)/usr/include for its
destination when installing asm headers.  So, headers already there
are assumed to be unwanted.

When headers_install starts descending from include/uapi with
$(root)/usr/include for its destination, it works around the problem
by creating an dummy destination $(root)/usr/include/uapi, but this
is tricky.

To fix the problem in a clean way is to skip headers install/check
in include/uapi and arch/$(hdr-arch)/include/uapi because we know
there are only sub-directories in uapi directories.  A good side
effect is the empty destination $(root)/usr/include/uapi will go
away.

I am also removing the trailing slash in the headers_check target to
skip checking in arch/$(hdr-arch)/include/uapi.

Fixes: 61562f981e ("uapi: export all arch specifics directories")
Reported-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Tested-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
2017-05-18 02:17:45 +09:00
Mauro Carvalho Chehab
cb43fb5775 docs: remove DocBook from the building system
Now that we don't have any DocBook anymore, remove it from
the building system.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-05-16 08:44:19 -03:00
Linus Torvalds
2ea659a9ef Linux 4.12-rc1 2017-05-13 13:19:49 -07:00
Linus Torvalds
791a9a666d Kbuild UAPI header export updates for v4.12
Improvement of headers_install by Nicolas Dichtel.
 
 It has been long since the introduction of uapi directories,
 but the de-coupling of exported headers has not been completed.
 Headers listed in header-y are exported whether they exist in
 uapi directories or not.  His work fixes this inconsistency.
 
 All (and only) headers under uapi directories are now exported.
 The asm-generic wrappers are still exceptions, but this is a big
 step forward.
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Merge tag 'kbuild-uapi-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild UAPI updates from Masahiro Yamada:
 "Improvement of headers_install by Nicolas Dichtel.

  It has been long since the introduction of uapi directories, but the
  de-coupling of exported headers has not been completed. Headers listed
  in header-y are exported whether they exist in uapi directories or
  not. His work fixes this inconsistency.

  All (and only) headers under uapi directories are now exported. The
  asm-generic wrappers are still exceptions, but this is a big step
  forward"

* tag 'kbuild-uapi-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  arch/include: remove empty Kbuild files
  uapi: export all arch specifics directories
  uapi: export all headers under uapi directories
  smc_diag.h: fix include from userland
  btrfs_tree.h: fix include from userland
  uapi: includes linux/types.h before exporting files
  Makefile.headersinst: remove destination-y option
  Makefile.headersinst: cleanup input files
  x86: stop exporting msr-index.h to userland
  nios2: put setup.h in uapi
  h8300: put bitsperlong.h in uapi
2017-05-10 20:45:36 -07:00