perf: Use format string of printf to align strings

Instead of filling whitespaces to do alignment, use
printf's format string.

This simplifies the code a bit.

Signed-off-by: WANG Cong <amwang@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20091214082700.4224.57640.sendpatchset@localhost.localdomain>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/tools/perf/builtin-help.c b/tools/perf/builtin-help.c
index 9f810b17c25c58bfb1af1522dc6ec3d4eee85362..e427d6965e0c7d4667a593ac594b506e34679eb4 100644 (file)
--- a/tools/perf/builtin-help.c
+++ b/tools/perf/builtin-help.c
@@ -286,8 +286,7 @@ void list_common_cmds_help(void)
 
        puts(" The most commonly used perf commands are:");
        for (i = 0; i < ARRAY_SIZE(common_cmds); i++) {
-               printf("   %s   ", common_cmds[i].name);
-               mput_char(' ', longest - strlen(common_cmds[i].name));
+               printf("   %-*s   ", longest, common_cmds[i].name);
                puts(common_cmds[i].help);
        }
 }