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- /*-
- * Copyright (c) 2012 Konstantin Belousov <kib@FreeBSD.org>
- * All rights reserved.
- *
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
- */
- #ifndef _MACHINE_COUNTER_H_
- #define _MACHINE_COUNTER_H_
- #include <sys/pcpu.h>
- #include <machine/atomic.h>
- #define EARLY_COUNTER &__pcpu[0].pc_early_dummy_counter
- #define counter_enter() do {} while (0)
- #define counter_exit() do {} while (0)
- #ifdef IN_SUBR_COUNTER_C
- static inline uint64_t
- counter_u64_read_one(uint64_t *p, int cpu)
- {
- return (*(uint64_t *)((char *)p + UMA_PCPU_ALLOC_SIZE * cpu));
- }
- static inline uint64_t
- counter_u64_fetch_inline(uint64_t *p)
- {
- uint64_t r;
- int i;
- r = 0;
- CPU_FOREACH(i)
- r += counter_u64_read_one(p, i);
- return (r);
- }
- static void
- counter_u64_zero_one_cpu(void *arg)
- {
- *(zpcpu_get((counter_u64_t *)arg)) = 0;
- }
- static inline void
- counter_u64_zero_inline(counter_u64_t c)
- {
- smp_rendezvous(smp_no_rendezvous_barrier, counter_u64_zero_one_cpu,
- smp_no_rendezvous_barrier, c);
- }
- #endif
- #define counter_u64_add_protected(c, inc) counter_u64_add(c, inc)
- static inline void
- counter_u64_add(counter_u64_t c, int64_t inc)
- {
- atomic_add_64((uint64_t *)zpcpu_get(c), inc);
- }
- #endif /* ! _MACHINE_COUNTER_H_ */
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