Contributors: 8
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Christophe Leroy |
63 |
38.89% |
2 |
18.18% |
| Paul Mackerras |
61 |
37.65% |
1 |
9.09% |
| Frédéric Weisbecker |
15 |
9.26% |
3 |
27.27% |
| Rik Van Riel |
11 |
6.79% |
1 |
9.09% |
| Martin Schwidefsky |
6 |
3.70% |
1 |
9.09% |
| Andreas Schwab |
2 |
1.23% |
1 |
9.09% |
| Michael Holzheu |
2 |
1.23% |
1 |
9.09% |
| Thomas Gleixner |
2 |
1.23% |
1 |
9.09% |
| Total |
162 |
|
11 |
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Definitions for measuring cputime on powerpc machines.
*
* Copyright (C) 2006 Paul Mackerras, IBM Corp.
*
* 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>
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);
}
/*
* 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) { }
#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;
}
#endif
#endif /* __KERNEL__ */
#endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
#endif /* __POWERPC_CPUTIME_H */