From ee0e41355d1faa5f74085effc4f57c3a7fc1f884 Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Thu, 4 Aug 2016 10:20:29 +0200 Subject: score: Fix a release/cancel job race condition Split up the potential thread priority change in the scheduler release/cancel job operation. Protect the rate monotonic period state with a dedicated SMP lock. This avoids a race condition during _Rate_monotonic_Timeout() while _Rate_monotonic_Cancel() is called on another processor. --- cpukit/rtems/src/ratemoncreate.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'cpukit/rtems/src/ratemoncreate.c') diff --git a/cpukit/rtems/src/ratemoncreate.c b/cpukit/rtems/src/ratemoncreate.c index 1a5c9b2615..a86c6a1eeb 100644 --- a/cpukit/rtems/src/ratemoncreate.c +++ b/cpukit/rtems/src/ratemoncreate.c @@ -62,6 +62,8 @@ rtems_status_code rtems_rate_monotonic_create( return RTEMS_TOO_MANY; } + _ISR_lock_Initialize( &the_period->Lock, "Rate Monotonic Period" ); + the_period->owner = _Thread_Get_executing(); the_period->state = RATE_MONOTONIC_INACTIVE; -- cgit v1.2.3