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101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
/*
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* Copyright (c) 2016 embedded brains GmbH. All rights reserved.
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*
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* embedded brains GmbH
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* Dornierstr. 4
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* 82178 Puchheim
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* Germany
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* <rtems@embedded-brains.de>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef __MACHINE_COUNTER_H__
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#define __MACHINE_COUNTER_H__
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#include <sys/pcpu.h>
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#include <rtems/score/isrlevel.h>
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#ifdef RTEMS_SMP
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#define _BSD_EARLY_COUNTER_SIZE (CPU_MAXIMUM_PROCESSORS * UMA_PCPU_ALLOC_SIZE)
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#else
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#define _BSD_EARLY_COUNTER_SIZE 1
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#endif
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extern uint64_t _bsd_early_counter[_BSD_EARLY_COUNTER_SIZE];
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#define EARLY_COUNTER (&_bsd_early_counter[0])
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#ifdef IN_SUBR_COUNTER_C
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static inline uint64_t
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counter_u64_read_one(uint64_t *p, int cpu)
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{
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return (*((uint64_t *)((char *)p + UMA_PCPU_ALLOC_SIZE * cpu)));
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}
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static inline uint64_t
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counter_u64_fetch_inline(uint64_t *p)
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{
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uint64_t r;
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uint32_t cpu;
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r = 0;
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for (cpu = 0; cpu < _SMP_Get_processor_maximum(); ++cpu) {
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r += counter_u64_read_one((uint64_t *)p, cpu);
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}
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return (r);
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}
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static inline void
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counter_u64_zero_inline(counter_u64_t c)
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{
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uint32_t cpu;
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for (cpu = 0; cpu < _SMP_Get_processor_maximum(); ++cpu) {
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*((uint64_t *)((char *)c + UMA_PCPU_ALLOC_SIZE * cpu)) = 0;
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}
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}
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#endif
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static inline void
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counter_u64_add_protected(counter_u64_t c, int64_t inc)
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{
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*(uint64_t *)zpcpu_get(c) += inc;
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}
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static inline void
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counter_u64_add(counter_u64_t c, int64_t inc)
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{
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ISR_Level level;
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_ISR_Local_disable(level);
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counter_u64_add_protected(c, inc);
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_ISR_Local_enable(level);
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}
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#endif /* ! __MACHINE_COUNTER_H__ */
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