Merge branch 'drm-dwhdmi-devel' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into...
[deliverable/linux.git] / arch / x86 / vdso / vgetcpu.c
1 /*
2 * Copyright 2006 Andi Kleen, SUSE Labs.
3 * Subject to the GNU Public License, v.2
4 *
5 * Fast user context implementation of getcpu()
6 */
7
8 #include <linux/kernel.h>
9 #include <linux/getcpu.h>
10 #include <linux/time.h>
11 #include <asm/vgtod.h>
12
13 notrace long
14 __vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused)
15 {
16 unsigned int p;
17
18 p = __getcpu();
19
20 if (cpu)
21 *cpu = p & VGETCPU_CPU_MASK;
22 if (node)
23 *node = p >> 12;
24 return 0;
25 }
26
27 long getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *tcache)
28 __attribute__((weak, alias("__vdso_getcpu")));
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