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kmod/core: check for needed kernel config options

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Yes, this is ugly.  There's a much cleaner way to do this for an in-tree
module, but this is the only way I know how to do it here.
This commit is contained in:
Josh Poimboeuf 2014-05-02 16:09:49 -05:00
parent bf45d8dc5e
commit de40ff3e54
2 changed files with 7 additions and 2 deletions
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2
kmod/core/Makefile
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@ -19,7 +19,5 @@ clean:
# kbuild rules
ifdef CONFIG_HAVE_FENTRY
obj-m := kpatch.o
kpatch-y := core.o
endif

7
kmod/core/core.c
View File

@ -44,6 +44,13 @@
#include <asm/cacheflush.h>
#include "kpatch.h"
#if !defined(CONFIG_FUNCTION_TRACER) || \
!defined(CONFIG_HAVE_FENTRY) || \
!defined(CONFIG_MODULES) || \
!defined(CONFIG_SYSFS)
#error "CONFIG_FUNCTION_TRACER, CONFIG_HAVE_FENTRY, CONFIG_MODULES, and CONFIG_SYSFS kernel config options are required"
#endif
#define KPATCH_HASH_BITS 8
static DEFINE_HASHTABLE(kpatch_func_hash, KPATCH_HASH_BITS);