aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux
diff options
context:
space:
mode:
authorRobert Peterson <rpeterso@redhat.com>2007-04-30 18:09:48 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-04-30 19:40:39 -0400
commit42e380832a6911c8a3173ee0172fbc0e4864d80b (patch)
treef336312f9476b62bc6f00a85d5506b1cd1c18d4f /include/linux
parentde34ed91c4ffa4727964a832c46e624dd1495cf5 (diff)
Extend print_symbol capability
Today's print_symbol function dumps a kernel symbol with printk. This patch extends the functionality of kallsyms.c so that the symbol lookup function may be used without the printk. This is useful for modules that want to dump symbols elsewhere, for example, to debugfs. I intend to use the new function call in the GFS2 file system (which will be a separate patch). [akpm@linux-foundation.org: build fix] [clameter@sgi.com: sprint_symbol should return length of string like sprintf] Signed-off-by: Robert Peterson <rpeterso@redhat.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Cc: Sam Ravnborg <sam@ravnborg.org> Acked-by: Paulo Marques <pmarques@grupopie.com> Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/kallsyms.h13
1 files changed, 12 insertions, 1 deletions
diff --git a/include/linux/kallsyms.h b/include/linux/kallsyms.h
index 1cebcbc28b47..3e3b92dabe3b 100644
--- a/include/linux/kallsyms.h
+++ b/include/linux/kallsyms.h
@@ -7,6 +7,8 @@
7 7
8 8
9#define KSYM_NAME_LEN 127 9#define KSYM_NAME_LEN 127
10#define KSYM_SYMBOL_LEN (sizeof("%s+%#lx/%#lx [%s]") + KSYM_NAME_LEN + \
11 2*(BITS_PER_LONG*3/10) + MODULE_NAME_LEN + 1)
10 12
11#ifdef CONFIG_KALLSYMS 13#ifdef CONFIG_KALLSYMS
12/* Lookup the address for a symbol. Returns 0 if not found. */ 14/* Lookup the address for a symbol. Returns 0 if not found. */
@@ -22,7 +24,10 @@ const char *kallsyms_lookup(unsigned long addr,
22 unsigned long *offset, 24 unsigned long *offset,
23 char **modname, char *namebuf); 25 char **modname, char *namebuf);
24 26
25/* Replace "%s" in format with address, if found */ 27/* Look up a kernel symbol and return it in a text buffer. */
28extern int sprint_symbol(char *buffer, unsigned long address);
29
30/* Look up a kernel symbol and print it to the kernel messages. */
26extern void __print_symbol(const char *fmt, unsigned long address); 31extern void __print_symbol(const char *fmt, unsigned long address);
27 32
28#else /* !CONFIG_KALLSYMS */ 33#else /* !CONFIG_KALLSYMS */
@@ -47,6 +52,12 @@ static inline const char *kallsyms_lookup(unsigned long addr,
47 return NULL; 52 return NULL;
48} 53}
49 54
55static inline int sprint_symbol(char *buffer, unsigned long addr)
56{
57 *buffer = '\0';
58 return 0;
59}
60
50/* Stupid that this does nothing, but I didn't create this mess. */ 61/* Stupid that this does nothing, but I didn't create this mess. */
51#define __print_symbol(fmt, addr) 62#define __print_symbol(fmt, addr)
52#endif /*CONFIG_KALLSYMS*/ 63#endif /*CONFIG_KALLSYMS*/