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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103/* SPDX-License-Identifier: GPL-2.0 *//* * BSD Process Accounting for Linux - Definitions * * Author: Marco van Wieringen (mvw@planets.elm.net) * * This header file contains the definitions needed to implement * BSD-style process accounting. The kernel accounting code and all * user-level programs that try to do something useful with the * process accounting log must include this file. * * Copyright (C) 1995 - 1997 Marco van Wieringen - ELM Consultancy B.V. * */#ifndef _LINUX_ACCT_H#define _LINUX_ACCT_H
#include <uapi/linux/acct.h>
#ifdef CONFIG_BSD_PROCESS_ACCTstruct pid_namespace;extern void acct_collect(long exitcode, int group_dead);extern void acct_process(void);extern void acct_exit_ns(struct pid_namespace *);#else#define acct_collect(x,y) do { } while (0)#define acct_process() do { } while (0)#define acct_exit_ns(ns) do { } while (0)#endif
/* * ACCT_VERSION numbers as yet defined: * 0: old format (until 2.6.7) with 16 bit uid/gid * 1: extended variant (binary compatible on M68K) * 2: extended variant (binary compatible on everything except M68K) * 3: new binary incompatible format (64 bytes) * 4: new binary incompatible format (128 bytes) * 5: new binary incompatible format (128 bytes, second half) * */
#undef ACCT_VERSION#undef AHZ
#ifdef CONFIG_BSD_PROCESS_ACCT_V3#define ACCT_VERSION 3#define AHZ 100typedef struct acct_v3 acct_t;#else#ifdef CONFIG_M68K#define ACCT_VERSION 1#else#define ACCT_VERSION 2#endif#define AHZ (USER_HZ)typedef struct acct acct_t;#endif
#include <linux/jiffies.h>/* * Yet another set of HZ to *HZ helper functions. * See <linux/jiffies.h> for the original. */
static inline u32 jiffies_to_AHZ(unsigned long x){#if (TICK_NSEC % (NSEC_PER_SEC / AHZ)) == 0# if HZ < AHZ return x * (AHZ / HZ);# else return x / (HZ / AHZ);# endif#else u64 tmp = (u64)x * TICK_NSEC; do_div(tmp, (NSEC_PER_SEC / AHZ)); return (long)tmp;#endif}
static inline u64 nsec_to_AHZ(u64 x){#if (NSEC_PER_SEC % AHZ) == 0 do_div(x, (NSEC_PER_SEC / AHZ));#elif (AHZ % 512) == 0 x *= AHZ/512; do_div(x, (NSEC_PER_SEC / 512));#else /* * max relative error 5.7e-8 (1.8s per year) for AHZ <= 1024, * overflow after 64.99 years. * exact for AHZ=60, 72, 90, 120, 144, 180, 300, 600, 900, ... */ x *= 9; do_div(x, (unsigned long)((9ull * NSEC_PER_SEC + (AHZ/2)) / AHZ));#endif return x;}
#endif /* _LINUX_ACCT_H */