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* kconfig: get rid of unused flagsYann E. MORIN2011-04-151-4/+0
| | | | | | | | | | Now that we detect recusrion of sourced files, get rid of now unused flags. Regenerate lex.zconf.c_shipped file. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> Signed-off-by: Michal Marek <mmarek@suse.cz>
* Merge branch 'kconfig' of ↵Linus Torvalds2011-01-101-1/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 * 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6: nconf: handle comment entries within choice/endchoice kconfig: fix warning kconfig: Make expr_copy() take a const argument kconfig: simplify select-with-unmet-direct-dependency warning kconfig: add more S_INT and S_HEX consistency checks kconfig: fix `zconfdebug' extern declaration kconfig/conf: merge duplicate switch's case kconfig: fix typos kbuild/gconf: add dummy inline for bind_textdomain_codeset() kbuild/nconf: fix spaces damage kconfig: nuke second argument of conf_write_symbol() kconfig: do not define AUTOCONF_INCLUDED kconfig: the day kconfig warns about "select"-abuse has come
| * kconfig: fix warningArnaud Lacombe2010-12-271-0/+1
| | | | | | | | | | | | | | | | | | In file included from scripts/kconfig/zconf.tab.c:2502: scripts/kconfig/expr.c:1033: warning: no previous prototype for 'expr_simplify_unmet_dep' Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Arnaud Lacombe <lacombar@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
| * kconfig: Make expr_copy() take a const argumentMichal Marek2010-12-211-1/+1
| | | | | | | | | | | | | | | | | | Fixes scripts/kconfig/expr.c: In function ‘expr_get_leftmost_symbol’: scripts/kconfig/expr.c:1026:2: warning: passing argument 1 of ‘expr_copy’ discards qualifiers from pointer target type scripts/kconfig/expr.c:67:14: note: expected ‘struct expr *’ but argument is of type ‘const struct expr *’ Signed-off-by: Michal Marek <mmarek@suse.cz>
* | kconfig: add an option to determine a menu's visibilityArnaud Lacombe2010-11-221-0/+1
|/ | | | | | | | | | This option is aimed to add the possibility to control a menu's visibility without adding dependency to the expression to all the submenu. Signed-off-by: Arnaud Lacombe <lacombar@gmail.com> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
* Merge branch 'kbuild/rc-fixes' into kbuild/kconfigMichal Marek2010-10-121-1/+0
|\ | | | | | | We need to revert the temporary hack in 71ebc01, hence the merge.
| * kconfig: delay symbol direct dependency initializationArnaud Lacombe2010-10-041-1/+0
| | | | | | | | | | | | | | | | | | This fixes the use-after-free and associated crash in kconfig introduced in commit 246cf9c26bf11f2bffbecea6e5bd222eee7b1df8. Signed-off-by: Arnaud Lacombe <lacombar@gmail.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* | kconfig: constify file nameArnaud Lacombe2010-09-191-1/+1
|/ | | | | | Signed-off-by: Arnaud Lacombe <lacombar@gmail.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Reviewed-by: Michal Marek <mmarek@suse.cz>
* kconfig: save location of config symbolsSam Ravnborg2010-08-031-0/+1
| | | | | | | | | | | | | | | When we add a new config symbol save the file/line so we later can refer to their location. The information is saved as a property to a config symbol because we may have multiple definitions of the same symbol. This has the side-effect that a symbol always has at least one property. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
* kbuild: Warn on selecting symbols with unmet direct dependenciesCatalin Marinas2010-07-021-0/+2
| | | | | | | | | | | | | | | | | | | The "select" statement in Kconfig files allows the enabling of options even if they have unmet direct dependencies (i.e. "depends on" expands to "no"). Currently, the "depends on" clauses are used in calculating the visibility but they do not affect the reverse dependencies in any way. The patch introduces additional tracking of the "depends on" statements and prints a warning on selecting an option if its direct dependencies are not met. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
* Improve kconfig symbol hashingAndi Kleen2010-02-021-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While looking for something else I noticed that the symbol hash function used by kconfig is quite poor. It doesn't use any of the standard hash techniques but simply adds up the string and then uses power of two masking, which is both known to perform poorly. The current x86 kconfig has over 7000 symbols. When I instrumented it showed that the minimum hash chain length was 16 and a significant number of them was over 30. It didn't help that the hash table size was only 256 buckets. This patch increases the hash table size to a larger prime and switches to a FNV32 hash. I played around with a couple of hash functions, but that one seemed to perform best with reasonable hash table sizes. Increasing the hash table size even further didn't seem like a good idea, because there are a couple of global walks which walk the complete hash table. I also moved the unnamed bucket to 0. It's still the longest of all the buckets (44 entries), but hopefully it's not often hit except for the global walk which doesn't care. The result is a much nicer distribution: (first column bucket length, second number of buckets with that length) 1: 3505 2: 1236 3: 294 4: 52 5: 3 47: 1 <--- this is the unnamed symbols bucket There are still some 5+ buckets, but increasing the hash table even more would be likely not worth it. This also cleans up the code slightly by removing hard coded magic numbers. I didn't notice a big performance difference either way on my Nehalem system, but I presume it'll help somewhat on slower systems. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Michal Marek <mmarek@suse.cz>
* kconfig: struct property commentedSam Ravnborg2009-01-021-10/+30
| | | | | | No functional changes Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* kconfig: add comments to symbol flagsSam Ravnborg2009-01-021-16/+18
| | | | | | No functional changes - only comments. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* kconfig: explain symbol value defaultsSam Ravnborg2009-01-021-2/+6
| | | | | | Added a few comments - no functional change. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* kconfig: environment symbol supportRoman Zippel2008-01-281-1/+2
| | | | | | | | | | Add the possibility to import a value from the environment into kconfig via the option syntax. Beside flexibility this has the advantage providing proper dependencies. Documented the options syntax. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* kconfig: explicitly introduce expression listRoman Zippel2008-01-281-1/+4
| | | | | | | | | Rename E_CHOICE to E_LIST to explicitly add support for expression lists. Add a helper macro expr_list_for_each_sym to more easily iterate over the list. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* kconfig: delete unused FILE_ and SYMBOL_ flagsSam Ravnborg2008-01-281-2/+0
| | | | | | | | The *_PRINTED flags were never used - so delete them. Do we need them later then we can re-add them. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org>
* kconfig: rename E_OR & friends to avoid name clashSam Ravnborg2008-01-281-3/+3
| | | | | | | | | We had macros named the same as a set of enumeration values. It is legal code but very confusing to read - so rename the macros from E_* to EXPR_* Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org>
* kconfig: remove unused members from struct symbolSam Ravnborg2007-07-251-1/+0
| | | | | | | dep and dep2 in struct symbol was unused - remove them. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org>
* kconfig: attach help text to menusSam Ravnborg2007-07-251-2/+1
| | | | | | | | | | | | | | | Roman Zippel wrote: > A simple example would be > help texts, right now they are per symbol, but they should really be per > menu, so archs can provide different help texts for something. This patch does this and at the same time introduce a few API funtions used to access the help text. The relevant api functions are introduced in the various frontends. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org>
* kconfig: add defconfig_list/module optionRoman Zippel2006-06-091-0/+1
| | | | | | | | | | | | This makes it possible to change two options which were hardcoded sofar. 1. Any symbol can now take the role of CONFIG_MODULES 2. The more useful option is to change the list of default file names, which kconfig uses to load the base configuration if .config isn't available. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* kconfig: integrate split config into silentoldconfigRoman Zippel2006-06-091-1/+2
| | | | | | | | | | | | | Now that kconfig can load multiple configurations, it becomes simple to integrate the split config step, by simply comparing the new .config file with the old auto.conf (and then saving the new auto.conf). A nice side effect is that this saves a bit of disk space and cache, as no data needs to be read from or saved into the splitted config files anymore (e.g. include/config is now 648KB instead of 5.2MB). Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* kconfig: allow loading multiple configurationsRoman Zippel2006-06-091-1/+5
| | | | | | | | Extend conf_read_simple() so it can load multiple configurations. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* kconfig: allow multiple default values per symbolRoman Zippel2006-06-091-1/+6
| | | | | | | | | Extend struct symbol to allow storing multiple default values, which can be used to hold multiple configurations. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* kconfig: remove SYMBOL_{YES,MOD,NO}Roman Zippel2006-06-091-4/+1
| | | | | | | | | The SYMBOL_{YES,MOD,NO} are not really used anymore (they were more used be the cml1 converter), so just remove them. Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* [PATCH] kconfig: Fix Kconfig performance bugDavid Gibson2005-11-091-1/+0
| | | | | | | | | | | | | | | | | | | | | | | When doing its recursive dependency check, scripts/kconfig/conf uses the flag SYMBOL_CHECK_DONE to avoid rechecking a symbol it has already checked. However, that flag is only set at the top level, so if a symbol is first encountered as a dependency of another symbol it will be rechecked every time it is encountered until it's encountered at the top level. This patch adjusts the flag setting so that each symbol will only be checked once, regardless of whether it is first encountered at the top level, or while recursing down from another symbol. On complex configurations, this vastly speeds up scripts/kconfig/conf. The config in the powerpc merge tree is particularly bad: this patch reduces the time for 'scripts/kconfig/conf -o arch/powerpc/Kconfig' by a factor of 40 on a G5. That's even including the time to print the config, so the speedup in the actual checking is more likely 2 or 3 orders of magnitude. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Linux-2.6.12-rc2Linus Torvalds2005-04-161-0/+195
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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