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[PATCH v4 10/28] bsd-user: Get number of cpus.
From: |
Karim Taha |
Subject: |
[PATCH v4 10/28] bsd-user: Get number of cpus. |
Date: |
Mon, 25 Sep 2023 00:01:18 +0300 |
From: Kyle Evans <kevans@FreeBSD.org>
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>
---
bsd-user/bsd-proc.c | 24 ++++++++++++++++++++++++
bsd-user/bsd-proc.h | 2 ++
2 files changed, 26 insertions(+)
diff --git a/bsd-user/bsd-proc.c b/bsd-user/bsd-proc.c
index 19f6efe1f7..ca3c1bf94f 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 048773a75d..b6225e520e 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)
{
--
2.42.0
- [PATCH v4 01/28] bsd-user: define TARGET_RFSPAWN for rfork to use vfork(2) semantics, and fix RLIM_INFINITY, (continued)
- [PATCH v4 01/28] bsd-user: define TARGET_RFSPAWN for rfork to use vfork(2) semantics, and fix RLIM_INFINITY, Karim Taha, 2023/09/24
- [PATCH v4 02/28] bsd-user: Define procctl(2) related structs, Karim Taha, 2023/09/24
- [PATCH v4 03/28] bsd-user: Implement host_to_target_siginfo., Karim Taha, 2023/09/24
- [PATCH v4 04/28] bsd-user: Add freebsd_exec_common and do_freebsd_procctl to qemu.h., Karim Taha, 2023/09/24
- [PATCH v4 05/28] bsd-user: add extern declarations for bsd-proc.c conversion functions, Karim Taha, 2023/09/24
- [PATCH v4 06/28] bsd-user: Implement target_to_host_resource conversion function, Karim Taha, 2023/09/24
- [PATCH v4 07/28] bsd-user: Implement target_to_host_rlim and host_to_target_rlim conversion., Karim Taha, 2023/09/24
- [PATCH v4 09/28] bsd-user: Implement host_to_target_waitstatus conversion., Karim Taha, 2023/09/24
- [PATCH v4 08/28] bsd-user: Implement host_to_target_rusage and host_to_target_wrusage., Karim Taha, 2023/09/24
- [PATCH v4 10/28] bsd-user: Get number of cpus.,
Karim Taha <=
- [PATCH v4 11/28] bsd-user: Implement getgroups(2) and setgroups(2) system calls., Karim Taha, 2023/09/24
- [PATCH v4 12/28] bsd-user: Implement umask(2), setlogin(2) and getlogin(2), Karim Taha, 2023/09/24
- [PATCH v4 13/28] bsd-user: Implement getrusage(2)., Karim Taha, 2023/09/24
- [PATCH v4 14/28] bsd-user: Implement getrlimit(2) and setrlimit(2), Karim Taha, 2023/09/24
- [PATCH v4 16/28] bsd-user: Implement get/set[resuid/resgid/sid] and issetugid., Karim Taha, 2023/09/24
- [PATCH v4 15/28] bsd-user: Implement several get/set system calls:, Karim Taha, 2023/09/24
- [PATCH v4 19/28] bsd-user: Implement get_filename_from_fd., Karim Taha, 2023/09/24
- [PATCH v4 17/28] bsd-user: Add stubs for profil(2), ktrace(2), utrace(2) and ptrace(2)., Karim Taha, 2023/09/24
- [PATCH v4 18/28] bsd-user: Implement getpriority(2) and setpriority(2)., Karim Taha, 2023/09/24