From: Matthew Wilcox Date: Sat, 19 Apr 2008 20:45:11 +0000 (-0600) Subject: kconifg: 'select' considered less evil X-Git-Tag: v2.6.26-rc1~689^2~2 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=dfecbec8b54038ef02835d2f8181e1f44bd080d2;p=linux-2.6-omap-h63xx.git kconifg: 'select' considered less evil While select should be used with care, it is not actually evil. Signed-off-by: Matthew Wilcox Signed-off-by: Sam Ravnborg --- diff --git a/Documentation/kbuild/kconfig-language.txt b/Documentation/kbuild/kconfig-language.txt index 649cb879989..00b950d1c19 100644 --- a/Documentation/kbuild/kconfig-language.txt +++ b/Documentation/kbuild/kconfig-language.txt @@ -104,14 +104,15 @@ applicable everywhere (see syntax). Reverse dependencies can only be used with boolean or tristate symbols. Note: - select is evil.... select will by brute force set a symbol - equal to 'y' without visiting the dependencies. So abusing - select you are able to select a symbol FOO even if FOO depends - on BAR that is not set. In general use select only for - non-visible symbols (no prompts anywhere) and for symbols with - no dependencies. That will limit the usefulness but on the - other hand avoid the illegal configurations all over. kconfig - should one day warn about such things. + select should be used with care. select will force + a symbol to a value without visiting the dependencies. + By abusing select you are able to select a symbol FOO even + if FOO depends on BAR that is not set. + In general use select only for non-visible symbols + (no prompts anywhere) and for symbols with no dependencies. + That will limit the usefulness but on the other hand avoid + the illegal configurations all over. + kconfig should one day warn about such things. - numerical ranges: "range" ["if" ] This allows to limit the range of possible input values for int