diff options
Diffstat (limited to 'cpukit/score/src/percpustatewait.c')
| -rw-r--r-- | cpukit/score/src/percpustatewait.c | 45 |
1 files changed, 29 insertions, 16 deletions
diff --git a/cpukit/score/src/percpustatewait.c b/cpukit/score/src/percpustatewait.c index 9d9f590df5..54ab92427f 100644 --- a/cpukit/score/src/percpustatewait.c +++ b/cpukit/score/src/percpustatewait.c @@ -1,3 +1,5 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ + /** * @file * @@ -8,17 +10,28 @@ */ /* - * Copyright (c) 2014 embedded brains GmbH. All rights reserved. + * Copyright (c) 2014 embedded brains GmbH & Co. KG * - * embedded brains GmbH - * Dornierstr. 4 - * 82178 Puchheim - * Germany - * <rtems@embedded-brains.de> + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. */ #ifdef HAVE_CONFIG_H @@ -33,8 +46,11 @@ bool _Per_CPU_State_wait_for_non_initial_state( uint32_t timeout_in_ns ) { - const Per_CPU_Control *cpu = _Per_CPU_Get_by_index( cpu_index ); - Per_CPU_State state = cpu->state; + const Per_CPU_Control *cpu; + Per_CPU_State state; + + cpu = _Per_CPU_Get_by_index( cpu_index ); + state = _Per_CPU_Get_state( cpu ); if ( timeout_in_ns > 0 ) { rtems_counter_ticks ticks = @@ -45,19 +61,16 @@ bool _Per_CPU_State_wait_for_non_initial_state( while ( ticks > delta && state == PER_CPU_STATE_INITIAL ) { rtems_counter_ticks b; - _CPU_SMP_Processor_event_receive(); - state = cpu->state; + state = _Per_CPU_Get_state( cpu ); ticks -= delta; - b = rtems_counter_read(); delta = rtems_counter_difference( b, a ); a = b; } } else { while ( state == PER_CPU_STATE_INITIAL ) { - _CPU_SMP_Processor_event_receive(); - state = cpu->state; + state = _Per_CPU_Get_state( cpu ); } } |