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freebsd-dev/sys/riscv/include/counter.h

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Import RISC-V machine headers. This is a minimal set required to compile kernel and userland. Reviewed by: andrew, imp, kib Sponsored by: DARPA, AFRL Sponsored by: HEIF5 Differential Revision: https://reviews.freebsd.org/D4554
2015-12-17 18:44:30 +00:00
/*-
* 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.
*
* $FreeBSD$
*/
#ifndef _MACHINE_COUNTER_H_
#define _MACHINE_COUNTER_H_
#include <sys/pcpu.h>
#ifdef INVARIANTS
#include <sys/proc.h>
#endif
Follow r317061 "Remove struct vmmeter from struct pcpu" with MD changes for RISC-V. This unbreaks RISC-V build. Sponsored by: DARPA, AFRL
2017-04-19 17:06:32 +00:00
extern struct pcpu __pcpu[];
#define EARLY_COUNTER &__pcpu[0].pc_early_dummy_counter
Import RISC-V machine headers. This is a minimal set required to compile kernel and userland. Reviewed by: andrew, imp, kib Sponsored by: DARPA, AFRL Sponsored by: HEIF5 Differential Revision: https://reviews.freebsd.org/D4554
2015-12-17 18:44:30 +00:00
#define counter_enter() critical_enter()
#define counter_exit() critical_exit()
#ifdef IN_SUBR_COUNTER_C
static inline uint64_t
counter_u64_read_one(uint64_t *p, int cpu)
{
Back pcpu zone with domain correct pages - Change pcpu zone consumers to use a stride size of PAGE_SIZE. (defined as UMA_PCPU_ALLOC_SIZE to make future identification easier) - Allocate page from the correct domain for a given cpu. - Don't initialize pc_domain to non-zero value if NUMA is not defined There are some misconceptions surrounding this field. It is the _VM_ NUMA domain and should only ever correspond to valid domain values as understood by the VM. The former slab size of sizeof(struct pcpu) was somewhat arbitrary. The new value is PAGE_SIZE because that's the smallest granularity which the VM can allocate a slab for a given domain. If you have fewer than PAGE_SIZE/8 counters on your system there will be some memory wasted, but this is obviously something where you want the cache line to be coming from the correct domain. Reviewed by: jeff Sponsored by: Limelight Networks Differential Revision: https://reviews.freebsd.org/D15933
2018-07-06 02:06:03 +00:00
return (*(uint64_t *)((char *)p + UMA_PCPU_ALLOC_SIZE * cpu));
Import RISC-V machine headers. This is a minimal set required to compile kernel and userland. Reviewed by: andrew, imp, kib Sponsored by: DARPA, AFRL Sponsored by: HEIF5 Differential Revision: https://reviews.freebsd.org/D4554
2015-12-17 18:44:30 +00:00
}
static inline uint64_t
counter_u64_fetch_inline(uint64_t *p)
{
uint64_t r;
int i;
r = 0;
for (i = 0; i < mp_ncpus; i++)
r += counter_u64_read_one((uint64_t *)p, i);
return (r);
}
/* XXXKIB might interrupt increment */
static void
counter_u64_zero_one_cpu(void *arg)
{
Back pcpu zone with domain correct pages - Change pcpu zone consumers to use a stride size of PAGE_SIZE. (defined as UMA_PCPU_ALLOC_SIZE to make future identification easier) - Allocate page from the correct domain for a given cpu. - Don't initialize pc_domain to non-zero value if NUMA is not defined There are some misconceptions surrounding this field. It is the _VM_ NUMA domain and should only ever correspond to valid domain values as understood by the VM. The former slab size of sizeof(struct pcpu) was somewhat arbitrary. The new value is PAGE_SIZE because that's the smallest granularity which the VM can allocate a slab for a given domain. If you have fewer than PAGE_SIZE/8 counters on your system there will be some memory wasted, but this is obviously something where you want the cache line to be coming from the correct domain. Reviewed by: jeff Sponsored by: Limelight Networks Differential Revision: https://reviews.freebsd.org/D15933
2018-07-06 02:06:03 +00:00
*((uint64_t *)((char *)arg + UMA_PCPU_ALLOC_SIZE *
Import RISC-V machine headers. This is a minimal set required to compile kernel and userland. Reviewed by: andrew, imp, kib Sponsored by: DARPA, AFRL Sponsored by: HEIF5 Differential Revision: https://reviews.freebsd.org/D4554
2015-12-17 18:44:30 +00:00
PCPU_GET(cpuid))) = 0;
}
static inline void
counter_u64_zero_inline(counter_u64_t c)
{
Corrected misspelled versions of rendezvous. The MFC will include a compat definition of smp_no_rendevous_barrier() that calls smp_no_rendezvous_barrier(). Reviewed by: gnn, kib MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D10313
2017-04-09 02:00:03 +00:00
smp_rendezvous(smp_no_rendezvous_barrier, counter_u64_zero_one_cpu,
smp_no_rendezvous_barrier, c);
Import RISC-V machine headers. This is a minimal set required to compile kernel and userland. Reviewed by: andrew, imp, kib Sponsored by: DARPA, AFRL Sponsored by: HEIF5 Differential Revision: https://reviews.freebsd.org/D4554
2015-12-17 18:44:30 +00:00
}
#endif
#define counter_u64_add_protected(c, inc) do { \
CRITICAL_ASSERT(curthread); \
*(uint64_t *)zpcpu_get(c) += (inc); \
} while (0)
static inline void
counter_u64_add(counter_u64_t c, int64_t inc)
{
counter_enter();
counter_u64_add_protected(c, inc);
counter_exit();
}
#endif /* ! _MACHINE_COUNTER_H_ */
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