x86: vdso: Remove bogus locking in update_vsyscall_tz()
[platform/adaptation/renesas_rcar/renesas_kernel.git] / kernel / up.c
1 /*
2  * Uniprocessor-only support functions.  The counterpart to kernel/smp.c
3  */
4
5 #include <linux/interrupt.h>
6 #include <linux/kernel.h>
7 #include <linux/export.h>
8 #include <linux/smp.h>
9
10 int smp_call_function_single(int cpu, void (*func) (void *info), void *info,
11                                 int wait)
12 {
13         WARN_ON(cpu != 0);
14
15         local_irq_disable();
16         (func)(info);
17         local_irq_enable();
18
19         return 0;
20 }
21 EXPORT_SYMBOL(smp_call_function_single);