It decreases code size:
text data bss dec hex filename
15719 0 8 15727 3d6f lib/vsprintf.o-before
15543 0 8 15551 3cbf lib/vsprintf.o-after
Signed-off-by: André Goddard Rosa <andre.godd...@gmail.com>
Acked-by: Frederic Weisbecker <fweis...@gmail.com>
---
lib/vsprintf.c | 19 +++++++++++--------
1 files changed, 11 insertions(+), 8 deletions(-)
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index f703fdf..566c947 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1736,6 +1736,13 @@ EXPORT_SYMBOL_GPL(bprintf);
#endif /* CONFIG_BINARY_PRINTF */
+static noinline const char *skip_space(const char *str)
+{
+ while (isspace(*str))
+ ++str;
+ return str;
+}
+
/**
* vsscanf - Unformat a buffer into a list of arguments
* @buf: input buffer
@@ -1757,10 +1764,8 @@ int vsscanf(const char *buf, const char *fmt, va_list
args)
* white space, including none, in the input.
*/
if (isspace(*fmt)) {
- while (isspace(*fmt))
- ++fmt;
- while (isspace(*str))
- ++str;
+ fmt = skip_space(fmt);
+ str = skip_space(str);
}
/* anything that is not a conversion must match exactly */
@@ -1830,8 +1835,7 @@ int vsscanf(const char *buf, const char *fmt, va_list
args)
if (field_width == -1)
field_width = INT_MAX;
/* first, skip leading white space in buffer */
- while (isspace(*str))
- str++;
+ str = skip_space(str);
/* now copy until next white space */
while (*str && !isspace(*str) && field_width--)
@@ -1873,8 +1877,7 @@ int vsscanf(const char *buf, const char *fmt, va_list
args)
/* have some sort of integer conversion.
* first, skip white space in buffer.
*/
- while (isspace(*str))
- str++;
+ str = skip_space(str);
digit = *str;
if (is_sign && digit == '-')
--
1.6.5.2.153.g6e31f.dirty
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