^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Definitions for measuring cputime on powerpc machines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2006 Paul Mackerras, IBM Corp.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * If we have CONFIG_VIRT_CPU_ACCOUNTING_NATIVE, we measure cpu time in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * the same units as the timebase. Otherwise we measure cpu time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * in jiffies using the generic definitions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #ifndef __POWERPC_CPUTIME_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define __POWERPC_CPUTIME_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <asm/div64.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <asm/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <asm/param.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) typedef u64 __nocast cputime_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) typedef u64 __nocast cputime64_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define cmpxchg_cputime(ptr, old, new) cmpxchg(ptr, old, new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #ifdef __KERNEL__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * Convert cputime <-> microseconds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) extern u64 __cputime_usec_factor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static inline unsigned long cputime_to_usecs(const cputime_t ct)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) return mulhdu((__force u64) ct, __cputime_usec_factor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define cputime_to_nsecs(cputime) tb_to_ns((__force u64)cputime)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * PPC64 uses PACA which is task independent for storing accounting data while
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * PPC32 uses struct thread_info, therefore at task switch the accounting data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * has to be populated in the new task
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #ifdef CONFIG_PPC64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define get_accounting(tsk) (&get_paca()->accounting)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #define raw_get_accounting(tsk) (&local_paca->accounting)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) static inline void arch_vtime_task_switch(struct task_struct *tsk) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define get_accounting(tsk) (&task_thread_info(tsk)->accounting)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define raw_get_accounting(tsk) get_accounting(tsk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * Called from the context switch with interrupts disabled, to charge all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * accumulated times to the current process, and to prepare accounting on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * the next process.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static inline void arch_vtime_task_switch(struct task_struct *prev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct cpu_accounting_data *acct = get_accounting(current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct cpu_accounting_data *acct0 = get_accounting(prev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) acct->starttime = acct0->starttime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * account_cpu_user_entry/exit runs "unreconciled", so can't trace,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * can't use get_paca()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static notrace inline void account_cpu_user_entry(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) unsigned long tb = mftb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) struct cpu_accounting_data *acct = raw_get_accounting(current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) acct->utime += (tb - acct->starttime_user);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) acct->starttime = tb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) static notrace inline void account_cpu_user_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) unsigned long tb = mftb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) struct cpu_accounting_data *acct = raw_get_accounting(current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) acct->stime += (tb - acct->starttime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) acct->starttime_user = tb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #endif /* __KERNEL__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #else /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static inline void account_cpu_user_entry(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) static inline void account_cpu_user_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) #endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #endif /* __POWERPC_CPUTIME_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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