From 0221da5f56353c9b238ef51d5a24802ba67b8c56 Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Tue, 12 Oct 2021 08:26:39 +0200 Subject: rtems: Fix rate monotonic statistics The rate monotonic period statistics were affected by rtems_cpu_usage_reset(). The logic to detect and work around a CPU usage reset was broken. The Thread_Contol::cpu_time_used is changed to contain the processor time used throughout the entire lifetime of the thread. The new member Thread_Contol::cpu_time_used_at_last_reset is added to contain the processor time used at the time of the last reset through rtems_cpu_usage_reset(). This decouples the resets of the CPU usage and the rate monotonic period statistics. Update #4528. --- cpukit/libtest/testbusy.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'cpukit/libtest') diff --git a/cpukit/libtest/testbusy.c b/cpukit/libtest/testbusy.c index c1d44278be..51c6a71810 100644 --- a/cpukit/libtest/testbusy.c +++ b/cpukit/libtest/testbusy.c @@ -28,10 +28,10 @@ void rtems_test_busy_cpu_usage( time_t seconds, long nanoseconds ) Timestamp_Control now; executing = _Thread_Get_executing(); - _Thread_Get_CPU_time_used( executing, &start ); + start = _Thread_Get_CPU_time_used( executing ); _Timestamp_Set( &busy, seconds, nanoseconds ); do { - _Thread_Get_CPU_time_used( executing, &now ); + now = _Thread_Get_CPU_time_used( executing ); } while ( now - start < busy ); } -- cgit v1.2.3