[PATCH 27/33] sched/debug: use match_string() helper

[Yisheng Xie]

match_string() returns the index of an array for a matching string,
which can be used intead of open coded variant.

Cc: Ingo Molnar <mi...@redhat.com>
Cc: Peter Zijlstra <pet...@infradead.org>
Signed-off-by: Yisheng Xie <xieyishe...@huawei.com>
---
 kernel/sched/debug.c | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
index 15b10e2..9e34499 100644
--- a/kernel/sched/debug.c
+++ b/kernel/sched/debug.c
@@ -111,16 +111,14 @@ static int sched_feat_set(char *cmp)
                cmp += 3;
        }
 
-       for (i = 0; i < __SCHED_FEAT_NR; i++) {
-               if (strcmp(cmp, sched_feat_names[i]) == 0) {
-                       if (neg) {
-                               sysctl_sched_features &= ~(1UL << i);
-                               sched_feat_disable(i);
-                       } else {
-                               sysctl_sched_features |= (1UL << i);
-                               sched_feat_enable(i);
-                       }
-                       break;
+       i = match_string(sched_feat_names, __SCHED_FEAT_NR, cmp);
+       if (i >= 0) {
+               if (neg) {
+                       sysctl_sched_features &= ~(1UL << i);
+                       sched_feat_disable(i);
+               } else {
+                       sysctl_sched_features |= (1UL << i);
+                       sched_feat_enable(i);
                }
        }
 
@@ -150,7 +148,7 @@ static int sched_feat_set(char *cmp)
        inode_lock(inode);
        i = sched_feat_set(cmp);
        inode_unlock(inode);
-       if (i == __SCHED_FEAT_NR)
+       if (i < 0)
                return -EINVAL;
 
        *ppos += cnt;
-- 
1.7.12.4