[LTP] [PATCH v2 1/6] sched_football: Drop use of sched_yeild()

[John Stultz]

sched_yeild() just causes the SCHED_FIFO tasks to behave like
SCHED_RR which makes analysis of the behavior more difficult to
follow. So lets drop the calls.

Also fixes up some whitespace inconsistencies in the header comment.

Cc: kernel-team@android.com
Cc: Cyril Hrubis <chrubis@suse.cz>
Cc: Darren Hart <darren@os.amperecomputing.com>
Signed-off-by: John Stultz <jstultz@google.com>
---
 .../realtime/func/sched_football/sched_football.c      | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/testcases/realtime/func/sched_football/sched_football.c b/testcases/realtime/func/sched_football/sched_football.c
index 6f075aea3..1e205219d 100644
--- a/testcases/realtime/func/sched_football/sched_football.c
+++ b/testcases/realtime/func/sched_football/sched_football.c
@@ -32,12 +32,12 @@
  *       - Create a fixed number of offense threads (lower priority)
  *       - Create a referee thread (highest priority)
  *       - Once everyone is on the field, the offense thread increments the
- *	 value of 'the_ball' and yields. The defense thread tries to block
- *	 the ball by never letting the offense players get the CPU (it just
- * 	   does a sched_yield).
+ *         value of 'the_ball'. The defense thread tries to block
+ *         the ball by never letting the offense players get the CPU (it just
+ *         spins).
  *       - The refree threads wakes up regularly to check if the game is over :)
  *       - In the end, if the value of 'the_ball' is >0, the test is considered
- *	 to have failed.
+ *         to have failed.
  *
  * USAGE:
  *      Use run_auto.sh script in current directory to build and run test.
@@ -113,7 +113,6 @@ void *thread_defense(void *arg)
 	atomic_inc(&players_ready);
 	/*keep the ball from being moved */
 	while (1) {
-		sched_yield();	/* let other defenders run */
 	}
 	return NULL;
 }
@@ -124,7 +123,6 @@ void *thread_offense(void *arg)
 	atomic_inc(&players_ready);
 	while (1) {
 		the_ball++;	/* move the ball ahead one yard */
-		sched_yield();	/* let other offensive players run */
 	}
 	return NULL;
 }
-- 
2.45.2.741.gdbec12cfda-goog