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3c42c9ed84
OS-specific code (e.g. under `module/os/linux`) does not need to share its code structure with any other operating systems. In particular, the ARC and kmem code need not be similar to the code in illumos, because we won't be syncing this OS-specific code between operating systems. For example, if/when illumos support is added to the common repo, we would add a file `module/os/illumos/zfs/arc_os.c` for the illumos versions of this code. Therefore, we can simplify the code in the OS-specific ARC and kmem routines. These changes do not impact system behavior, they are purely code cleanup. The changes are: Arenas are not used on Linux or FreeBSD (they are always `NULL`), so `heap_arena`, `zio_arena`, and `zio_alloc_arena` can be removed, along with code that uses them. In `arc_available_memory()`: * `desfree` is unused, remove it * rename `freemem` to avoid conflict with pre-existing `#define` * remove checks related to arenas * use units of bytes, rather than converting from bytes to pages and then back to bytes `SPL_KMEM_CACHE_REAP` is unused, remove it. `skc_reap` is unused, remove it. The `count` argument to `spl_kmem_cache_reap_now()` is unused, remove it. `vmem_size()` and associated type and macros are unused, remove them. In `arc_memory_throttle()`, use a less confusing variable name to store the result of `arc_free_memory()`. Reviewed-by: George Wilson <gwilson@delphix.com> Reviewed-by: Pavel Zakharov <pavel.zakharov@delphix.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Ryan Moeller <ryan@ixsystems.com> Signed-off-by: Matthew Ahrens <mahrens@delphix.com> Closes #10499
100 lines
3.5 KiB
C
100 lines
3.5 KiB
C
/*
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* Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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* All rights reserved.
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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 AUTHORS 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 AUTHORS 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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* $FreeBSD$
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*/
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#ifndef _OPENSOLARIS_SYS_KMEM_H_
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#define _OPENSOLARIS_SYS_KMEM_H_
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#include <sys/param.h>
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#include <sys/malloc.h>
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#include <sys/vmem.h>
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#include <sys/vmmeter.h>
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#include <vm/uma.h>
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#include <vm/vm.h>
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#include <vm/vm_extern.h>
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MALLOC_DECLARE(M_SOLARIS);
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#define POINTER_IS_VALID(p) (!((uintptr_t)(p) & 0x3))
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#define POINTER_INVALIDATE(pp) (*(pp) = (void *)((uintptr_t)(*(pp)) | 0x1))
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#define KM_SLEEP M_WAITOK
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#define KM_PUSHPAGE M_WAITOK
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#define KM_NOSLEEP M_NOWAIT
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#define KM_NODEBUG M_NODUMP
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#define KM_NORMALPRI 0
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#define KMC_NODEBUG UMA_ZONE_NODUMP
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#define KMC_NOTOUCH 0
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typedef struct vmem vmem_t;
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extern char *kmem_asprintf(const char *, ...);
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extern char *kmem_vasprintf(const char *fmt, va_list ap);
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typedef struct kmem_cache {
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char kc_name[32];
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#if !defined(KMEM_DEBUG)
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uma_zone_t kc_zone;
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#else
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size_t kc_size;
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#endif
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int (*kc_constructor)(void *, void *, int);
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void (*kc_destructor)(void *, void *);
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void *kc_private;
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} kmem_cache_t;
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extern uint64_t spl_kmem_cache_inuse(kmem_cache_t *cache);
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extern uint64_t spl_kmem_cache_entry_size(kmem_cache_t *cache);
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void *zfs_kmem_alloc(size_t size, int kmflags);
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void zfs_kmem_free(void *buf, size_t size);
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uint64_t kmem_size(void);
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kmem_cache_t *kmem_cache_create(char *name, size_t bufsize, size_t align,
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int (*constructor)(void *, void *, int), void (*destructor)(void *, void *),
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void (*reclaim)(void *) __unused, void *private, vmem_t *vmp, int cflags);
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void kmem_cache_destroy(kmem_cache_t *cache);
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void *kmem_cache_alloc(kmem_cache_t *cache, int flags);
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void kmem_cache_free(kmem_cache_t *cache, void *buf);
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boolean_t kmem_cache_reap_active(void);
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void kmem_cache_reap_soon(kmem_cache_t *);
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void kmem_reap(void);
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int kmem_debugging(void);
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void *calloc(size_t n, size_t s);
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#define kmem_cache_reap_now kmem_cache_reap_soon
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#define freemem vm_free_count()
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#define minfree vm_cnt.v_free_min
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#define kmem_alloc(size, kmflags) zfs_kmem_alloc((size), (kmflags))
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#define kmem_zalloc(size, kmflags) \
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zfs_kmem_alloc((size), (kmflags) | M_ZERO)
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#define kmem_free(buf, size) zfs_kmem_free((buf), (size))
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#endif /* _OPENSOLARIS_SYS_KMEM_H_ */
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