linux.git/Documentation/kbuild, branch v3.12

kconfig: do not allow more than one symbol to have 'option modules'

2013-09-05T09:10:08+00:00

Previously, it was possible to have more than one symbol with the
'option modules' attached to them, although only the last one would
in fact control tristates.

Since this does not make much sense, only allow at most one symbol to
control tristates.

Note: it is still possible to have more than one symbol that control
tristates, but indirectly:

    config MOD1
        bool "mod1"
        select MODULES
    config MOD2
        bool "mod2"
        select MODULES
    config MODULES
        bool
        option modules

Signed-off-by: "Yann E. MORIN" 
Cc: Sam Ravnborg 
Signed-off-by: Michal Marek

Merge branch 'yem-kconfig-rc-fixes' of git://gitorious.org/linux-kconfig/linux-kconfig into kbuild/kconfig

2013-07-23T13:57:17+00:00

Documentation/kconfig: more concise and straightforward search explanation

2013-07-16T18:26:30+00:00

Re-phrase the explanations on the sorting of search results, in a more
concise and complete way.

Drop reference to the user's locale when sorting alphabetically, since
this is implicit.

Reported-by: Jean Delvare 
Signed-off-by: "Yann E. MORIN" 
Cc: Jean Delvare 
Reviewed-by: Jean Delvare

Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

2013-07-10T23:06:46+00:00

Pull kconfig updates from Michal Marek:
 - dependency solver fix for make defconfig
 - randconfig fixes, one of which had to be reverted again
 - more user-friendly sorting of search results
 - hex and range keywords support longs
 - fix for [mn]conf not to rely on particular behavior of the LINES and
   COLS variables
 - cleanup of magic constants in kconfig/lxdialog
 - [mn]conf formatting fixes
 - fix for scripts/config's help text in out-of-tree usage (under a
   different name)

* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  kconfig: allow "hex" and "range" to support longs
  Revert "kconfig: fix randomising choice entries in presence of KCONFIG_ALLCONFIG"
  kconfig: fix randomising choice entries in presence of KCONFIG_ALLCONFIG
  kconfig: loop as long as we changed some symbols in randconfig
  kconfig/[mn]conf: make it explicit in the search box that a regexp is possible
  kconfig: sort found symbols by relevance
  kconfig/conf: print the seed used to initialise the RNG for randconfig
  kconfig/conf: accept a base-16 seed for randconfig
  kconfig/conf: fix randconfig setting multiple symbols in a choice
  scripts/config: replace hard-coded script name by a dynamic value
  mconf/nconf: mark empty menus/menuconfigs different from non-empty ones
  nconf: use function calls instead of ncurses' variables LINES and COLS
  mconf: use function calls instead of ncurses' variables LINES and COLS
  kconfig/lxdialog: handle newline characters in print_autowrap()
  kconfig/lxdialog: Use new mininimum resize definitions in conf_choice()
  kconfig/lxdialog: Add definitions for mininimum (re)size values
  kconfig: Fix defconfig when one choice menu selects options that another choice menu depends on

kconfig: sort found symbols by relevance

2013-06-24T17:57:45+00:00

When searching for symbols, return the symbols sorted by relevance.

Sorting is done as thus:
  - first, symbols that match exactly
  - then, alphabetical sort

Since the search can be a regexp, it is possible that more than one symbol
matches exactly. In this case, we can't decide which to sort first, so we
fallback to alphabeticall sort.

Explain this (new!) sorting heuristic in the documentation.

Reported-by: Jean Delvare 
Signed-off-by: "Yann E. MORIN" 
Cc: Jean Delvare 
Cc: Michal Marek 
Cc: Roland Eggner 
Cc: Wang YanQing 

--
Changes v1->v2:
  - drop the previous, complex heuristic in favour of a simpler heuristic
    that is both easier to understand, *and* to maintain (Jean)
  - explain sorting heuristic in the doc  (Jean)

Finally eradicate CONFIG_HOTPLUG

2013-06-03T21:20:18+00:00

Ever since commit 45f035ab9b8f ("CONFIG_HOTPLUG should be always on"),
it has been basically impossible to build a kernel with CONFIG_HOTPLUG
turned off.  Remove all the remaining references to it.

Cc: Russell King 
Cc: Doug Thompson 
Cc: Bjorn Helgaas 
Cc: Steven Whitehouse 
Cc: Arnd Bergmann 
Cc: Pavel Machek 
Cc: "Rafael J. Wysocki" 
Cc: Andrew Morton 
Signed-off-by: Stephen Rothwell 
Acked-by: Mauro Carvalho Chehab 
Acked-by: Hans Verkuil 
Signed-off-by: Greg Kroah-Hartman

Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

2013-05-07T14:59:19+00:00

Pull misc kbuild updates from Michal Marek:
 "Non-critical kbuild changes:

   - make coccicheck improvements, but no new semantic patches this time

   - make rpm improvements

   - make tar-pkg change to include the architecture in the filename.

     This is a deliberate incompatibility, but nobody has complained so
     far and it is useful if you build for different architectures.  It
     also matches what the deb-pkg and rpm-pkg targets produce.

   - kbuild documentation fix"

* 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  rpm-pkg: Remove pointless set -e statements
  rpm-pkg: Always regenerate the specfile
  rpm-pkg: Do not write to the parent directory
  rpm-pkg: Do not package the whole source directory
  buildtar: Add ARCH to the archive name
  Coccinelle: Fix patch output when coccicheck is used with M= and C=
  Coccinelle: Add support to the SPFLAGS variable
  Coccinelle: Cleanup the setting of the FLAGS and OPTIONS variables
  Coccinelle: Restore coccicheck verbosity in ONLINE mode (C=1 or C=2)
  scripts/package/Makefile: compare objtree with srctree instead of test KBUILD_OUTPUT
  doc: change example to existing Makefile fragment
  scripts/tags.sh: Add magic for OFFSET and DEFINE

Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

2013-05-07T14:58:05+00:00

Pull kconfig updates from Michal Marek:
 - use pkg-config to detect curses libraries
 - clean up the way curses headers are searched
 - Some randconfig fixes, of which one had to be reverted
 - KCONFIG_SEED for randconfig debugging
 - memuconfig memory leak plugged
 - menuconfig > breadcrumbs > navigation
 - xconfig compilation fix
 - Other minor fixes

* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  kconfig: fix lists definition for C++
  Revert "kconfig: fix randomising choice entries in presence of KCONFIG_ALLCONFIG"
  kconfig: implement KCONFIG_PROBABILITY for randconfig
  kconfig: allow specifying the seed for randconfig
  kconfig: fix randomising choice entries in presence of KCONFIG_ALLCONFIG
  kconfig: do not override symbols already set
  kconfig: fix randconfig tristate detection
  kconfig/lxdialog: rationalise the include paths where to find {.n}curses{,w}.h
  menuconfig: Add "breadcrumbs" navigation aid
  menuconfig: Fix memory leak introduced by jump keys feature
  merge_config.sh: Avoid creating unnessary source softlinks
  kconfig: optionally use pkg-config to detect ncurses libs
  menuconfig: optionally use pkg-config to detect ncurses libs

kconfig: implement KCONFIG_PROBABILITY for randconfig

2013-04-24T22:16:30+00:00

Currently the odds to set each symbol is (rounded):
    booleans:   y: 50%          n: 50%
    tristates:  y: 33%  m: 33%  n: 33%

Introduce a KCONFIG_PROBABILITY environment variable to tweak the
probabilities (in percentage), as such:
    KCONFIG_PROBABILITY     y:n split           y:m:n split
    -----------------------------------------------------------------
[1] unset or empty          50  : 50            33  : 33  : 34
[2] N                        N  : 100-N         N/2 : N/2 : 100-N
    N:M                     N+M : 100-(N+M)      N  :  M  : 100-(N+M)
    N:M:L                    N  : 100-N          M  :  L  : 100-(M+L)

[1] The current behaviour is kept as default, for backward compatibility
[2] The solution initially implemented by Peter for Buildroot, see:
    http://git.buildroot.org/buildroot/commit/?id=3435c1afb5

Signed-off-by: Peter Korsgaard 
[yann.morin.1998@free.fr: add to Documentation/]
Signed-off-by: "Yann E. MORIN"

kconfig: allow specifying the seed for randconfig

2013-04-24T22:16:25+00:00

For reproducibility, it can be useful to be able to specify the
seed to use to seed the RNG.

Add a new KCONFIG_SEED environment variable which can be set to
the seed to use:
    $ make KCONFIG_SEED=42 randconfig
    $ sha1sum .config
    70a128c8dcc61303069e1be352cce64114dfcbca  .config
    $ make KCONFIG_SEED=42 randconfig
    $ sha1sum .config
    70a128c8dcc61303069e1be352cce64114dfcbca  .config

It's very usefull for eg. debugging the kconfig parser.

Signed-off-by: "Yann E. MORIN"