| Heiko Carstens | fae8b22 | 2007-10-22 12:52:39 +0200 | [diff] [blame] | 1 | /* |
| 2 | * include/asm-s390/cpu.h |
| 3 | * |
| 4 | * Copyright IBM Corp. 2007 |
| 5 | * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com> |
| 6 | */ |
| 7 | |
| 8 | #ifndef _ASM_S390_CPU_H_ |
| 9 | #define _ASM_S390_CPU_H_ |
| 10 | |
| 11 | #include <linux/types.h> |
| 12 | #include <linux/percpu.h> |
| 13 | #include <linux/spinlock.h> |
| 14 | |
| 15 | struct s390_idle_data { |
| 16 | spinlock_t lock; |
| Heiko Carstens | fae8b22 | 2007-10-22 12:52:39 +0200 | [diff] [blame] | 17 | unsigned long long idle_count; |
| 18 | unsigned long long idle_enter; |
| 19 | unsigned long long idle_time; |
| 20 | }; |
| 21 | |
| 22 | DECLARE_PER_CPU(struct s390_idle_data, s390_idle); |
| 23 | |
| Martin Schwidefsky | 9cfb9b3 | 2008-12-31 15:11:41 +0100 | [diff] [blame] | 24 | void vtime_start_cpu(void); |
| Heiko Carstens | 43ca5c3 | 2008-04-17 07:46:23 +0200 | [diff] [blame] | 25 | |
| 26 | static inline void s390_idle_check(void) |
| 27 | { |
| Martin Schwidefsky | 6f43092 | 2008-12-31 15:11:40 +0100 | [diff] [blame] | 28 | if ((&__get_cpu_var(s390_idle))->idle_enter != 0ULL) |
| Martin Schwidefsky | 9cfb9b3 | 2008-12-31 15:11:41 +0100 | [diff] [blame] | 29 | vtime_start_cpu(); |
| Heiko Carstens | 43ca5c3 | 2008-04-17 07:46:23 +0200 | [diff] [blame] | 30 | } |
| 31 | |
| Heiko Carstens | fae8b22 | 2007-10-22 12:52:39 +0200 | [diff] [blame] | 32 | #endif /* _ASM_S390_CPU_H_ */ |