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authorFranck Bui-Huu <vagabon.xyz@gmail.com>2006-10-03 01:13:48 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-03 08:03:41 -0700
commitffc5089196446c08d9a005cf0dd7cab18d119606 (patch)
treee15925251553152f6859c354e34afe3adfcd1c64 /include/linux/kallsyms.h
parent339b0c0813a257893fa84be999b9b85a50846dd8 (diff)
downloadop-kernel-dev-ffc5089196446c08d9a005cf0dd7cab18d119606.zip
op-kernel-dev-ffc5089196446c08d9a005cf0dd7cab18d119606.tar.gz
[PATCH] Create kallsyms_lookup_size_offset()
Some uses of kallsyms_lookup() do not need to find out the name of a symbol and its module's name it belongs. This is specially true in arch specific code, which needs to unwind the stack to show the back trace during oops (mips is an example). In this specific case, we just need to retreive the function's size and the offset of the active intruction inside it. Adds a new entry "kallsyms_lookup_size_offset()" This new entry does exactly the same as kallsyms_lookup() but does not require any buffers to store any names. It returns 0 if it fails otherwise 1. Signed-off-by: Franck Bui-Huu <vagabon.xyz@gmail.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/kallsyms.h')
-rw-r--r--include/linux/kallsyms.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/kallsyms.h b/include/linux/kallsyms.h
index 849043c..1cebcbc 100644
--- a/include/linux/kallsyms.h
+++ b/include/linux/kallsyms.h
@@ -12,6 +12,10 @@
/* Lookup the address for a symbol. Returns 0 if not found. */
unsigned long kallsyms_lookup_name(const char *name);
+extern int kallsyms_lookup_size_offset(unsigned long addr,
+ unsigned long *symbolsize,
+ unsigned long *offset);
+
/* Lookup an address. modname is set to NULL if it's in the kernel. */
const char *kallsyms_lookup(unsigned long addr,
unsigned long *symbolsize,
@@ -28,6 +32,13 @@ static inline unsigned long kallsyms_lookup_name(const char *name)
return 0;
}
+static inline int kallsyms_lookup_size_offset(unsigned long addr,
+ unsigned long *symbolsize,
+ unsigned long *offset)
+{
+ return 0;
+}
+
static inline const char *kallsyms_lookup(unsigned long addr,
unsigned long *symbolsize,
unsigned long *offset,
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