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[Qemu-devel] [PATCHv2] linux-user: Add getcpu() support
From: |
Samuel Thibault |
Subject: |
[Qemu-devel] [PATCHv2] linux-user: Add getcpu() support |
Date: |
Thu, 11 Jan 2018 01:17:20 +0100 |
Signed-off-by: Samuel Thibault <address@hidden>
---
Difference from v1: handle failure of put_user_u32 with goto efault;
---
linux-user/syscall.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 11c9116c4a..89d78b7b48 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -296,6 +296,8 @@ _syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned
int, len,
#define __NR_sys_sched_setaffinity __NR_sched_setaffinity
_syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len,
unsigned long *, user_mask_ptr);
+#define __NR_sys_getcpu __NR_getcpu
+_syscall3(int, sys_getcpu, unsigned *, cpu, unsigned *, node, void *, tcache);
_syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd,
void *, arg);
_syscall2(int, capget, struct __user_cap_header_struct *, header,
@@ -10403,6 +10405,20 @@ abi_long do_syscall(void *cpu_env, int num, abi_long
arg1,
ret = get_errno(sys_sched_setaffinity(arg1, mask_size, mask));
}
break;
+ case TARGET_NR_getcpu:
+ {
+ unsigned cpu, node;
+ ret = get_errno(sys_getcpu(arg1 ? &cpu : NULL,
+ arg2 ? &node : NULL,
+ NULL));
+ if (arg1 && put_user_u32(cpu, arg1)) {
+ goto efault;
+ }
+ if (arg2 && put_user_u32(node, arg2)) {
+ goto efault;
+ }
+ }
+ break;
case TARGET_NR_sched_setparam:
{
struct sched_param *target_schp;
--
2.15.1
- [Qemu-devel] [PATCHv2] linux-user: Add getcpu() support,
Samuel Thibault <=