From ffc5089196446c08d9a005cf0dd7cab18d119606 Mon Sep 17 00:00:00 2001 From: Franck Bui-Huu Date: Tue, 3 Oct 2006 01:13:48 -0700 Subject: [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 Cc: Rusty Russell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kallsyms.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include') diff --git a/include/linux/kallsyms.h b/include/linux/kallsyms.h index 849043ce4ed..1cebcbc28b4 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, -- cgit v1.2.3