[07/16] scripts/kallsyms: replace prefix_underscores_count() with strspn()

Message ID 20191123132727.30151-8-yamada.masahiro@socionext.com
State Superseded
Headers show
Series
  • scripts/kallsyms: various cleanups and optimizations
Related show

Commit Message

Masahiro Yamada Nov. 23, 2019, 1:27 p.m.
You can do equivalent with strspn(). I do not see noticeable performance
difference.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

---

 scripts/kallsyms.c | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

-- 
2.17.1

Patch

diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index 7b00b4030be4..a007d901c3a5 100644
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -653,16 +653,6 @@  static int may_be_linker_script_provide_symbol(const struct sym_entry *se)
 	return 0;
 }
 
-static int prefix_underscores_count(const char *str)
-{
-	const char *tail = str;
-
-	while (*tail == '_')
-		tail++;
-
-	return tail - str;
-}
-
 static int compare_symbols(const void *a, const void *b)
 {
 	const struct sym_entry *sa;
@@ -691,8 +681,8 @@  static int compare_symbols(const void *a, const void *b)
 		return wa - wb;
 
 	/* sort by the number of prefix underscores */
-	wa = prefix_underscores_count(sym_name(sa));
-	wb = prefix_underscores_count(sym_name(sb));
+	wa = strspn(sym_name(sa), "_");
+	wb = strspn(sym_name(sb), "_");
 	if (wa != wb)
 		return wa - wb;