rt_gettime() may come cheap, but no need to overdo it. This patch removes
2 unecessary calls to rt_gettime() in the iteration loop.
Signed-off-by: Sebastien Dugue <[EMAIL PROTECTED]>
Acked-by: Darren Hart <[EMAIL PROTECTED]>
Cc: Tim Chavez <[EMAIL PROTECTED]>
---
.../realtime/func/sched_latency/sched_latency.c | 8 +++++---
1 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/testcases/realtime/func/sched_latency/sched_latency.c
b/testcases/realtime/func/sched_latency/sched_latency.c
index a121545..55caef3 100644
--- a/testcases/realtime/func/sched_latency/sched_latency.c
+++ b/testcases/realtime/func/sched_latency/sched_latency.c
@@ -159,13 +159,15 @@ void *periodic_thread(void *arg)
sched_delta = next - now; /* how long we should sleep */
delta = 0;
do {
+ nsec_t new_now;
+
rt_nanosleep(next - now);
- delta += rt_gettime() - now; /* how long we did sleep */
- now = rt_gettime();
+ new_now = rt_gettime();
+ delta += new_now - now; /* how long we did sleep */
+ now = new_now;
} while (now < next);
/* start of period */
- now = rt_gettime();
delay = (now - start - (nsec_t)(i+1)*period)/NS_PER_US;
dat.records[i].x = i;
dat.records[i].y = delay;
--
1.5.4.rc2.84.gf85fd-dirty
-------------------------------------------------------------------------
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