Hi,
I would like to suggest new ikconfig's API from defs.h.
The get_kernel_config("config name without CONFIG_ prefix", &val)
will return one of target kernel configurations.
If val == NULL, return value is poinited whether config is valid or not.
IKCONFIG_N: kernel config is not set (not valid).
IKCONFIG_Y: kernel config is set y (valid).
IKCONFIG_M: kernel config is set m (valid).
IKCONFIG_STR: kernel config is values or strings, etc (valid).
API require CONFIG_IKCONFIG=y. Otherwise user is warned.
I think it is useful for such as extension module developers
to write kernel config switch code.
Although ifdef or symbol APIs can be used instead,
I believe using this API can write more impressive or flexible code
about kernel config depended parts (over my senses...).
Thanks,
Toshi.
-----------------------------------------------------------
Example usage: Resolve RADIX_TREE_MAP_SHIFT from config depends.
[ code of kernel-2.6.35 ]
#define RADIX_TREE_MAP_SHIFT (CONFIG_BASE_SMALL ? 4 : 6)
[ code of crash utility or extension modules ]
static int radix_tree_map_shift = 6;
#define RADIX_TREE_MAP_SHIFT radix_tree_map_shift
int _init(void)
{
read_in_kernel_config(IKCFG_SETUP);
if (get_kernel_config("BASE_SMALL", NULL) == IKCONFIG_Y)
radix_tree_map_shift = 4;
return 0;
}
int int _fini(void)
{
read_in_kernel_config(IKCFG_FREE);
return 0;
}
Toshikazu Nakayama (2):
new ikconfig API.
dump_kernel_table()
crash-5.1.1/defs.h | 13 ++++
crash-5.1.1/kernel.c | 166 +++++++++++++++++++++++++++++++++++++++++++++++++-
2 files changed, 178 insertions(+), 1 deletions(-)
--
1.7.4.rc2
Attachment:
0001-new-ikconfig-API~1.patch
Description: Binary data
Attachment:
0002-dump_kernel_table.patch
Description: Binary data
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