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Implement mallocarray_domainset(9) variant of mallocarray(9).

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Reviewed by:	kib @
MFC after:	1 week
Sponsored by:	Mellanox Technologies // NVIDIA Networking
This commit is contained in:
Hans Petter Selasky 2021-03-06 11:25:12 +01:00
parent d708f23ebb
commit c743a6bd4f
4 changed files with 27 additions and 1 deletions
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1
share/man/man9/Makefile
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@ -1391,6 +1391,7 @@ MLINKS+=make_dev.9 destroy_dev.9 \
MLINKS+=malloc.9 free.9 \
malloc.9 malloc_domainset.9 \
malloc.9 mallocarray.9 \
malloc.9 mallocarray_domainset.9 \
malloc.9 MALLOC_DECLARE.9 \
malloc.9 MALLOC_DEFINE.9 \
malloc.9 realloc.9 \

13
share/man/man9/malloc.9
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@ -29,7 +29,7 @@
.\" $NetBSD: malloc.9,v 1.3 1996/11/11 00:05:11 lukem Exp $
.\" $FreeBSD$
.\"
.Dd October 30, 2020
.Dd March 6, 2021
.Dt MALLOC 9
.Os
.Sh NAME
@ -70,6 +70,8 @@
.Fn malloc_domainset "size_t size" "struct malloc_type *type" "struct domainset *ds" "int flags"
.Ft void *
.Fn malloc_domainset_exec "size_t size" "struct malloc_type *type" "struct domainset *ds" "int flags"
.Ft void *
.Fn mallocarray_domainset "size_t nmemb" "size_t size" "struct malloc_type *type" "struct domainset *ds" "int flags"
.Sh DESCRIPTION
The
.Fn malloc
@ -102,6 +104,15 @@ entries whose size is specified by
.Fa size .
.Pp
The
.Fn mallocarray_domainset
variant allocates memory from a specific
.Xr numa 4
domain using the specified domain selection policy.
See
.Xr domainset 9
for some example policies.
.Pp
The
.Fn free
function releases memory at address
.Fa addr

11
sys/kern/kern_malloc.c
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@ -804,6 +804,17 @@ mallocarray(size_t nmemb, size_t size, struct malloc_type *type, int flags)
return (malloc(size * nmemb, type, flags));
}
void *
mallocarray_domainset(size_t nmemb, size_t size, struct malloc_type *type,
struct domainset *ds, int flags)
{
if (WOULD_OVERFLOW(nmemb, size))
panic("mallocarray_domainset: %zu * %zu overflowed", nmemb, size);
return (malloc_domainset(size * nmemb, type, ds, flags));
}
#ifdef INVARIANTS
static void
free_save_type(void *addr, struct malloc_type *mtp, u_long size)

3
sys/sys/malloc.h
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@ -246,6 +246,9 @@ void *malloc_domainset(size_t size, struct malloc_type *type,
void *mallocarray(size_t nmemb, size_t size, struct malloc_type *type,
int flags) __malloc_like __result_use_check
__alloc_size2(1, 2);
void *mallocarray_domainset(size_t nmemb, size_t size, struct malloc_type *type,
struct domainset *ds, int flags) __malloc_like __result_use_check
__alloc_size2(1, 2);
void *malloc_exec(size_t size, struct malloc_type *type, int flags) __malloc_like
__result_use_check __alloc_size(1);
void *malloc_domainset_exec(size_t size, struct malloc_type *type,