[PATCH v5 07/12] vsprintf: factor out skip_space code in a separate function
From: Andrà Goddard Rosa
Date: Sun Nov 15 2009 - 02:14:30 EST
When converting more caller sites, the inline decision will be left up to gcc.
It decreases code size:
text data bss dec hex filename
15710 0 8 15718 3d66 vsprintf.o (ex lib/lib.a-BEFORE)
15534 0 8 15542 3cb6 vsprintf.o (ex lib/lib.a-AFTER)
Signed-off-by: Andrà Goddard Rosa <andre.goddard@xxxxxxxxx>
Acked-by: Frederic Weisbecker <fweisbec@xxxxxxxxx>
---
lib/vsprintf.c | 19 +++++++++++--------
1 files changed, 11 insertions(+), 8 deletions(-)
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 8b60f77..f6492b5 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1733,6 +1733,13 @@ EXPORT_SYMBOL_GPL(bprintf);
#endif /* CONFIG_BINARY_PRINTF */
+static noinline char *skip_space(const char *str)
+{
+ while (isspace(*str))
+ ++str;
+ return (char *)str;
+}
+
/**
* vsscanf - Unformat a buffer into a list of arguments
* @buf: input buffer
@@ -1754,10 +1761,8 @@ 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 */
@@ -1827,8 +1832,7 @@ 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--)
@@ -1870,8 +1874,7 @@ 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 == '-')
--
1.6.5.2.180.gc5b3e.dirty
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