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Date: Sat, 14 Nov 2009 05:11:55 -0200 From: André Goddard Rosa <andre.goddard@...il.com> To: "linux list" <linux-kernel@...r.kernel.org>, "Andrew Morton" <akpm@...ux-foundation.org> Cc: André Goddard Rosa <andre.goddard@...il.com> Subject: [PATCH v5 07/12] vsprintf: factor out skip_space code in a separate function 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: André Goddard Rosa <andre.goddard@...il.com> Acked-by: Frederic Weisbecker <fweisbec@...il.com> --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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