forked from luck/tmp_suning_uos_patched
8fa1f1c2bd
These externs belong in fs/internal.h. Rename (they are not acct-specific anymore) and move them over there. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
106 lines
2.5 KiB
C
106 lines
2.5 KiB
C
/*
|
|
* 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_ACCT
|
|
struct vfsmount;
|
|
struct super_block;
|
|
struct pacct_struct;
|
|
struct pid_namespace;
|
|
extern int acct_parm[]; /* for sysctl */
|
|
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 100
|
|
typedef 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 */
|