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[Qemu-devel] [PATCH v2] linux-user: make getcpu optional


From: Mike Frysinger
Subject: [Qemu-devel] [PATCH v2] linux-user: make getcpu optional
Date: Fri, 16 Feb 2018 21:02:30 -0500

Not all arches implement this, and the kernel doesn't require them to.
Add ifdef logic to disable it when not available.

Signed-off-by: Mike Frysinger <address@hidden>
---
 linux-user/syscall.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 799c8e2800ea..a9904fac791f 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -290,8 +290,10 @@ _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);
+#ifdef TARGET_NR_getcpu
 #define __NR_sys_getcpu __NR_getcpu
 _syscall3(int, sys_getcpu, unsigned *, cpu, unsigned *, node, void *, tcache);
+#endif
 _syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd,
           void *, arg);
 _syscall2(int, capget, struct __user_cap_header_struct *, header,
@@ -10595,6 +10597,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long 
arg1,
             ret = get_errno(sys_sched_setaffinity(arg1, mask_size, mask));
         }
         break;
+#ifdef TARGET_NR_getcpu
     case TARGET_NR_getcpu:
         {
             unsigned cpu, node;
@@ -10612,6 +10615,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long 
arg1,
             }
         }
         break;
+#endif
     case TARGET_NR_sched_setparam:
         {
             struct sched_param *target_schp;
-- 
2.16.1




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