diff options
| author | Kyle Evans <kevans@FreeBSD.org> | 2023-09-25 21:24:07 +0300 |
|---|---|---|
| committer | Warner Losh <imp@bsdimp.com> | 2023-10-03 17:14:06 -0600 |
| commit | b623031ca60b23dbb8a573306495e7d99821a9af (patch) | |
| tree | 3a89220e3eaf129be9bb2438daedec3ad48be567 /bsd-user | |
| parent | 3f44e273ff530ae9885b64791779ced571233d1d (diff) | |
| download | qemu-b623031ca60b23dbb8a573306495e7d99821a9af.zip qemu-b623031ca60b23dbb8a573306495e7d99821a9af.tar.gz qemu-b623031ca60b23dbb8a573306495e7d99821a9af.tar.bz2 | |
bsd-user: Get number of cpus.
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>
Diffstat (limited to 'bsd-user')
| -rw-r--r-- | bsd-user/bsd-proc.c | 24 | ||||
| -rw-r--r-- | bsd-user/bsd-proc.h | 2 |
2 files changed, 26 insertions, 0 deletions
diff --git a/bsd-user/bsd-proc.c b/bsd-user/bsd-proc.c index 19f6efe..ca3c1bf 100644 --- a/bsd-user/bsd-proc.c +++ b/bsd-user/bsd-proc.c @@ -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; +} + diff --git a/bsd-user/bsd-proc.h b/bsd-user/bsd-proc.h index 048773a..b6225e5 100644 --- a/bsd-user/bsd-proc.h +++ b/bsd-user/bsd-proc.h @@ -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) { |