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bsd-user: Get number of cpus.

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Signed-off-by: Kyle Evans <kevans@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182425.3163-11-kariem.taha2.7@gmail.com>
This commit is contained in:
Kyle Evans 2023-09-25 21:24:07 +03:00 committed by Warner Losh
parent 3f44e273ff
commit b623031ca6
2 changed files with 26 additions and 0 deletions
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24
bsd-user/bsd-proc.c
View file

@ -119,3 +119,27 @@ int host_to_target_waitstatus(int status)
return status;
}
int bsd_get_ncpu(void)
{
int ncpu = -1;
cpuset_t mask;
CPU_ZERO(&mask);
if (cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, -1, sizeof(mask),
&mask) == 0) {
ncpu = CPU_COUNT(&mask);
}
if (ncpu == -1) {
ncpu = sysconf(_SC_NPROCESSORS_ONLN);
}
if (ncpu == -1) {
gemu_log("XXX Missing bsd_get_ncpu() implementation\n");
ncpu = 1;
}
return ncpu;
}

2
bsd-user/bsd-proc.h
View file

@ -26,6 +26,8 @@
#include "gdbstub/syscalls.h"
#include "qemu/plugin.h"
int bsd_get_ncpu(void);
/* exit(2) */
static inline abi_long do_bsd_exit(void *cpu_env, abi_long arg1)
{