Release 4.18 arch/powerpc/include/asm/cputime.h
/*
* Definitions for measuring cputime on powerpc machines.
*
* Copyright (C) 2006 Paul Mackerras, IBM Corp.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* If we have CONFIG_VIRT_CPU_ACCOUNTING_NATIVE, we measure cpu time in
* the same units as the timebase. Otherwise we measure cpu time
* in jiffies using the generic definitions.
*/
#ifndef __POWERPC_CPUTIME_H
#define __POWERPC_CPUTIME_H
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
#include <linux/types.h>
#include <linux/time.h>
#include <asm/div64.h>
#include <asm/time.h>
#include <asm/param.h>
#include <asm/cpu_has_feature.h>
typedef u64 __nocast cputime_t;
typedef u64 __nocast cputime64_t;
#define cmpxchg_cputime(ptr, old, new) cmpxchg(ptr, old, new)
#ifdef __KERNEL__
/*
* Convert cputime <-> microseconds
*/
extern u64 __cputime_usec_factor;
static inline unsigned long cputime_to_usecs(const cputime_t ct)
{
return mulhdu((__force u64) ct, __cputime_usec_factor);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Paul Mackerras | 18 | 75.00% | 1 | 25.00% |
| Martin Schwidefsky | 4 | 16.67% | 1 | 25.00% |
| Michael Holzheu | 1 | 4.17% | 1 | 25.00% |
| Andreas Schwab | 1 | 4.17% | 1 | 25.00% |
| Total | 24 | 100.00% | 4 | 100.00% |
/*
* PPC64 uses PACA which is task independent for storing accounting data while
* PPC32 uses struct thread_info, therefore at task switch the accounting data
* has to be populated in the new task
*/
#ifdef CONFIG_PPC64
#define get_accounting(tsk) (&get_paca()->accounting)
static inline void arch_vtime_task_switch(struct task_struct *tsk) { }
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Frédéric Weisbecker | 11 | 100.00% | 1 | 100.00% |
| Total | 11 | 100.00% | 1 | 100.00% |
#else
#define get_accounting(tsk) (&task_thread_info(tsk)->accounting)
/*
* Called from the context switch with interrupts disabled, to charge all
* accumulated times to the current process, and to prepare accounting on
* the next process.
*/
static inline void arch_vtime_task_switch(struct task_struct *prev)
{
struct cpu_accounting_data *acct = get_accounting(current);
struct cpu_accounting_data *acct0 = get_accounting(prev);
acct->starttime = acct0->starttime;
acct->startspurr = acct0->startspurr;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Christophe Leroy | 48 | 100.00% | 2 | 100.00% |
| Total | 48 | 100.00% | 2 | 100.00% |
#endif
#endif /* __KERNEL__ */
#endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
#endif /* __POWERPC_CPUTIME_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Christophe Leroy | 71 | 41.28% | 2 | 18.18% |
| Paul Mackerras | 61 | 35.47% | 1 | 9.09% |
| Frédéric Weisbecker | 16 | 9.30% | 3 | 27.27% |
| Rik Van Riel | 11 | 6.40% | 1 | 9.09% |
| Martin Schwidefsky | 6 | 3.49% | 1 | 9.09% |
| Kevin Hao | 3 | 1.74% | 1 | 9.09% |
| Andreas Schwab | 2 | 1.16% | 1 | 9.09% |
| Michael Holzheu | 2 | 1.16% | 1 | 9.09% |
| Total | 172 | 100.00% | 11 | 100.00% |
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