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c6622f63 PM |
1 | /* |
2 | * Definitions for measuring cputime on powerpc machines. | |
3 | * | |
4 | * Copyright (C) 2006 Paul Mackerras, IBM Corp. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the License, or (at your option) any later version. | |
10 | * | |
abf917cd | 11 | * If we have CONFIG_VIRT_CPU_ACCOUNTING_NATIVE, we measure cpu time in |
c6622f63 PM |
12 | * the same units as the timebase. Otherwise we measure cpu time |
13 | * in jiffies using the generic definitions. | |
14 | */ | |
15 | ||
16 | #ifndef __POWERPC_CPUTIME_H | |
17 | #define __POWERPC_CPUTIME_H | |
18 | ||
b672592f | 19 | #ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE |
c6622f63 PM |
20 | |
21 | #include <linux/types.h> | |
22 | #include <linux/time.h> | |
23 | #include <asm/div64.h> | |
24 | #include <asm/time.h> | |
25 | #include <asm/param.h> | |
b92a226e | 26 | #include <asm/cpu_has_feature.h> |
c6622f63 | 27 | |
64861634 MS |
28 | typedef u64 __nocast cputime_t; |
29 | typedef u64 __nocast cputime64_t; | |
c6622f63 | 30 | |
347abad9 RR |
31 | #define cmpxchg_cputime(ptr, old, new) cmpxchg(ptr, old, new) |
32 | ||
c6622f63 | 33 | #ifdef __KERNEL__ |
c6622f63 | 34 | /* |
d57af9b2 | 35 | * Convert cputime <-> microseconds |
c6622f63 | 36 | */ |
9f5072d4 | 37 | extern u64 __cputime_usec_factor; |
c6622f63 | 38 | |
d57af9b2 | 39 | static inline unsigned long cputime_to_usecs(const cputime_t ct) |
c6622f63 | 40 | { |
e4e88f31 | 41 | return mulhdu((__force u64) ct, __cputime_usec_factor); |
c6622f63 PM |
42 | } |
43 | ||
c223c903 CL |
44 | /* |
45 | * PPC64 uses PACA which is task independent for storing accounting data while | |
46 | * PPC32 uses struct thread_info, therefore at task switch the accounting data | |
47 | * has to be populated in the new task | |
48 | */ | |
49 | #ifdef CONFIG_PPC64 | |
e3942ba0 | 50 | static inline void arch_vtime_task_switch(struct task_struct *tsk) { } |
c223c903 CL |
51 | #else |
52 | void arch_vtime_task_switch(struct task_struct *tsk); | |
53 | #endif | |
e3942ba0 | 54 | |
c6622f63 | 55 | #endif /* __KERNEL__ */ |
abf917cd | 56 | #endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */ |
c6622f63 | 57 | #endif /* __POWERPC_CPUTIME_H */ |