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authorSergey Senozhatsky <sergey.senozhatsky@gmail.com>2018-04-14 06:00:05 +0300
committerPetr Mladek <pmladek@suse.com>2018-04-18 13:53:52 +0300
commitcdb7e52d960a59f30de853f5dd85574432d6bb50 (patch)
tree68286413e16c8551c9929e9c1c45a9f797145c34 /lib/vsprintf.c
parent7e6bd6f3dcf913460a0a0ae7f260a8280001dd80 (diff)
downloadlinux-cdb7e52d960a59f30de853f5dd85574432d6bb50.tar.xz
vsprintf: Tweak pF/pf comment
Reflect changes that have happened to pf/pF (deprecation) specifiers in pointer() comment section. Link: http://lkml.kernel.org/r/20180414030005.25831-1-sergey.senozhatsky@gmail.com Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Joe Perches <joe@perches.com> Cc: linux-kernel@vger.kernel.org Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Signed-off-by: Petr Mladek <pmladek@suse.com>
Diffstat (limited to 'lib/vsprintf.c')
-rw-r--r--lib/vsprintf.c12
1 files changed, 4 insertions, 8 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 38a71df48d48..7649ef4ed7d0 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1713,10 +1713,10 @@ static char *ptr_to_id(char *buf, char *end, void *ptr, struct printf_spec spec)
*
* Right now we handle:
*
- * - 'F' For symbolic function descriptor pointers with offset
- * - 'f' For simple symbolic function names without offset
- * - 'S' For symbolic direct pointers with offset
- * - 's' For symbolic direct pointers without offset
+ * - 'S' For symbolic direct pointers (or function descriptors) with offset
+ * - 's' For symbolic direct pointers (or function descriptors) without offset
+ * - 'F' Same as 'S'
+ * - 'f' Same as 's'
* - '[FfSs]R' as above with __builtin_extract_return_addr() translation
* - 'B' For backtraced symbolic direct pointers with offset
* - 'R' For decoded struct resource, e.g., [mem 0x0-0x1f 64bit pref]
@@ -1813,10 +1813,6 @@ static char *ptr_to_id(char *buf, char *end, void *ptr, struct printf_spec spec)
* ** When making changes please also update:
* Documentation/core-api/printk-formats.rst
*
- * Note: The difference between 'S' and 'F' is that on ia64 and ppc64
- * function pointers are really function descriptors, which contain a
- * pointer to the real address.
- *
* Note: The default behaviour (unadorned %p) is to hash the address,
* rendering it useful as a unique identifier.
*/