| Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| Vojtech Pavlik | c08c820 | 2006-09-26 10:52:28 +0200 | [diff] [blame] | 2 | #ifndef _LINUX_GETCPU_H |
| 3 | #define _LINUX_GETCPU_H 1 |
| 4 | |
| Andi Kleen | 34596dc | 2006-09-30 01:47:55 +0200 | [diff] [blame] | 5 | /* Cache for getcpu() to speed it up. Results might be a short time |
| Vojtech Pavlik | c08c820 | 2006-09-26 10:52:28 +0200 | [diff] [blame] | 6 | out of date, but will be faster. |
| Andi Kleen | 34596dc | 2006-09-30 01:47:55 +0200 | [diff] [blame] | 7 | |
| Vojtech Pavlik | c08c820 | 2006-09-26 10:52:28 +0200 | [diff] [blame] | 8 | User programs should not refer to the contents of this structure. |
| Andi Kleen | 34596dc | 2006-09-30 01:47:55 +0200 | [diff] [blame] | 9 | I repeat they should not refer to it. If they do they will break |
| 10 | in future kernels. |
| 11 | |
| 12 | It is only a private cache for vgetcpu(). It will change in future kernels. |
| Vojtech Pavlik | c08c820 | 2006-09-26 10:52:28 +0200 | [diff] [blame] | 13 | The user program must store this information per thread (__thread) |
| 14 | If you want 100% accurate information pass NULL instead. */ |
| 15 | struct getcpu_cache { |
| Andi Kleen | 34596dc | 2006-09-30 01:47:55 +0200 | [diff] [blame] | 16 | unsigned long blob[128 / sizeof(long)]; |
| Vojtech Pavlik | c08c820 | 2006-09-26 10:52:28 +0200 | [diff] [blame] | 17 | }; |
| 18 | |
| 19 | #endif |