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scripts/kallsyms: replace prefix_underscores_count() with strspn() 

You can do equivalent things with strspn(). I do not see noticeable
performance difference.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2019-11-24 01:04:36 +09:00
parent 29e55ad3d5
commit aa91524500
1 changed files with 2 additions and 12 deletions
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14
scripts/kallsyms.c
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@ -661,16 +661,6 @@ 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;
@ -699,8 +689,8 @@ 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;