diff options
| author | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2011-04-05 13:24:57 +0300 |
|---|---|---|
| committer | Michal Marek <mmarek@suse.cz> | 2011-04-15 15:48:01 +0200 |
| commit | 71a83ec7da8910f374a1c82e96d2704aa45d9238 (patch) | |
| tree | 29d76d098aad49f92e3a745fb87c17d90511f524 /init/Kconfig | |
| parent | 0ce790e7d736cedc563e1fb4e998babf5a4dbc3d (diff) | |
| download | lwn-71a83ec7da8910f374a1c82e96d2704aa45d9238.tar.gz lwn-71a83ec7da8910f374a1c82e96d2704aa45d9238.zip | |
Kconfig: improve KALLSYMS_ALL documentation
Dumb users like myself are not able to grasp from the existing KALLSYMS_ALL
documentation that this option is not what they need. Improve the help
message and make it clearer that KALLSYMS is enough in the majority of
use cases, and KALLSYMS_ALL should really be used very rarely.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Diffstat (limited to 'init/Kconfig')
| -rw-r--r-- | init/Kconfig | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/init/Kconfig b/init/Kconfig index 56240e724d9a..563065df29a5 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -968,12 +968,18 @@ config KALLSYMS_ALL bool "Include all symbols in kallsyms" depends on DEBUG_KERNEL && KALLSYMS help - Normally kallsyms only contains the symbols of functions, for nicer - OOPS messages. Some debuggers can use kallsyms for other - symbols too: say Y here to include all symbols, if you need them - and you don't care about adding 300k to the size of your kernel. - - Say N. + Normally kallsyms only contains the symbols of functions for nicer + OOPS messages and backtraces (i.e., symbols from the text and inittext + sections). This is sufficient for most cases. And only in very rare + cases (e.g., when a debugger is used) all symbols are required (e.g., + names of variables from the data sections, etc). + + This option makes sure that all symbols are loaded into the kernel + image (i.e., symbols from all sections) in cost of increased kernel + size (depending on the kernel configuration, it may be 300KiB or + something like this). + + Say N unless you really need all symbols. config KALLSYMS_EXTRA_PASS bool "Do an extra kallsyms pass" |