1 /* SPDX-License-Identifier: GPL-2.0 */ <<
2 /* 1 /*
3 * BSD Process Accounting for Linux - Definit 2 * BSD Process Accounting for Linux - Definitions
4 * 3 *
5 * Author: Marco van Wieringen (mvw@planets.e 4 * Author: Marco van Wieringen (mvw@planets.elm.net)
6 * 5 *
7 * This header file contains the definitions 6 * This header file contains the definitions needed to implement
8 * BSD-style process accounting. The kernel a 7 * BSD-style process accounting. The kernel accounting code and all
9 * user-level programs that try to do somethi 8 * user-level programs that try to do something useful with the
10 * process accounting log must include this f 9 * process accounting log must include this file.
11 * 10 *
12 * Copyright (C) 1995 - 1997 Marco van Wierin 11 * Copyright (C) 1995 - 1997 Marco van Wieringen - ELM Consultancy B.V.
13 * 12 *
14 */ 13 */
>> 14
15 #ifndef _LINUX_ACCT_H 15 #ifndef _LINUX_ACCT_H
16 #define _LINUX_ACCT_H 16 #define _LINUX_ACCT_H
17 17
18 #include <uapi/linux/acct.h> !! 18 #include <linux/types.h>
>> 19
>> 20 #include <asm/param.h>
>> 21 #include <asm/byteorder.h>
>> 22
>> 23 /*
>> 24 * comp_t is a 16-bit "floating" point number with a 3-bit base 8
>> 25 * exponent and a 13-bit fraction.
>> 26 * comp2_t is 24-bit with 5-bit base 2 exponent and 20 bit fraction
>> 27 * (leading 1 not stored).
>> 28 * See linux/kernel/acct.c for the specific encoding systems used.
>> 29 */
>> 30
>> 31 typedef __u16 comp_t;
>> 32 typedef __u32 comp2_t;
>> 33
>> 34 /*
>> 35 * accounting file record
>> 36 *
>> 37 * This structure contains all of the information written out to the
>> 38 * process accounting file whenever a process exits.
>> 39 */
>> 40
>> 41 #define ACCT_COMM 16
>> 42
>> 43 struct acct
>> 44 {
>> 45 char ac_flag; /* Flags */
>> 46 char ac_version; /* Always set to ACCT_VERSION */
>> 47 /* for binary compatibility back until 2.0 */
>> 48 __u16 ac_uid16; /* LSB of Real User ID */
>> 49 __u16 ac_gid16; /* LSB of Real Group ID */
>> 50 __u16 ac_tty; /* Control Terminal */
>> 51 __u32 ac_btime; /* Process Creation Time */
>> 52 comp_t ac_utime; /* User Time */
>> 53 comp_t ac_stime; /* System Time */
>> 54 comp_t ac_etime; /* Elapsed Time */
>> 55 comp_t ac_mem; /* Average Memory Usage */
>> 56 comp_t ac_io; /* Chars Transferred */
>> 57 comp_t ac_rw; /* Blocks Read or Written */
>> 58 comp_t ac_minflt; /* Minor Pagefaults */
>> 59 comp_t ac_majflt; /* Major Pagefaults */
>> 60 comp_t ac_swaps; /* Number of Swaps */
>> 61 /* m68k had no padding here. */
>> 62 #if !defined(CONFIG_M68K) || !defined(__KERNEL__)
>> 63 __u16 ac_ahz; /* AHZ */
>> 64 #endif
>> 65 __u32 ac_exitcode; /* Exitcode */
>> 66 char ac_comm[ACCT_COMM + 1]; /* Command Name */
>> 67 __u8 ac_etime_hi; /* Elapsed Time MSB */
>> 68 __u16 ac_etime_lo; /* Elapsed Time LSB */
>> 69 __u32 ac_uid; /* Real User ID */
>> 70 __u32 ac_gid; /* Real Group ID */
>> 71 };
>> 72
>> 73 struct acct_v3
>> 74 {
>> 75 char ac_flag; /* Flags */
>> 76 char ac_version; /* Always set to ACCT_VERSION */
>> 77 __u16 ac_tty; /* Control Terminal */
>> 78 __u32 ac_exitcode; /* Exitcode */
>> 79 __u32 ac_uid; /* Real User ID */
>> 80 __u32 ac_gid; /* Real Group ID */
>> 81 __u32 ac_pid; /* Process ID */
>> 82 __u32 ac_ppid; /* Parent Process ID */
>> 83 __u32 ac_btime; /* Process Creation Time */
>> 84 #ifdef __KERNEL__
>> 85 __u32 ac_etime; /* Elapsed Time */
>> 86 #else
>> 87 float ac_etime; /* Elapsed Time */
>> 88 #endif
>> 89 comp_t ac_utime; /* User Time */
>> 90 comp_t ac_stime; /* System Time */
>> 91 comp_t ac_mem; /* Average Memory Usage */
>> 92 comp_t ac_io; /* Chars Transferred */
>> 93 comp_t ac_rw; /* Blocks Read or Written */
>> 94 comp_t ac_minflt; /* Minor Pagefaults */
>> 95 comp_t ac_majflt; /* Major Pagefaults */
>> 96 comp_t ac_swaps; /* Number of Swaps */
>> 97 char ac_comm[ACCT_COMM]; /* Command Name */
>> 98 };
>> 99
>> 100 /*
>> 101 * accounting flags
>> 102 */
>> 103 /* bit set when the process ... */
>> 104 #define AFORK 0x01 /* ... executed fork, but did not exec */
>> 105 #define ASU 0x02 /* ... used super-user privileges */
>> 106 #define ACOMPAT 0x04 /* ... used compatibility mode (VAX only not used) */
>> 107 #define ACORE 0x08 /* ... dumped core */
>> 108 #define AXSIG 0x10 /* ... was killed by a signal */
>> 109
>> 110 #ifdef __BIG_ENDIAN
>> 111 #define ACCT_BYTEORDER 0x80 /* accounting file is big endian */
>> 112 #else
>> 113 #define ACCT_BYTEORDER 0x00 /* accounting file is little endian */
>> 114 #endif
19 115
>> 116 #ifdef __KERNEL__
20 117
21 118
22 #ifdef CONFIG_BSD_PROCESS_ACCT 119 #ifdef CONFIG_BSD_PROCESS_ACCT
>> 120 struct vfsmount;
>> 121 struct super_block;
>> 122 struct pacct_struct;
23 struct pid_namespace; 123 struct pid_namespace;
>> 124 extern void acct_auto_close_mnt(struct vfsmount *m);
>> 125 extern void acct_auto_close(struct super_block *sb);
>> 126 extern void acct_init_pacct(struct pacct_struct *pacct);
24 extern void acct_collect(long exitcode, int gr 127 extern void acct_collect(long exitcode, int group_dead);
25 extern void acct_process(void); 128 extern void acct_process(void);
26 extern void acct_exit_ns(struct pid_namespace 129 extern void acct_exit_ns(struct pid_namespace *);
27 #else 130 #else
>> 131 #define acct_auto_close_mnt(x) do { } while (0)
>> 132 #define acct_auto_close(x) do { } while (0)
>> 133 #define acct_init_pacct(x) do { } while (0)
28 #define acct_collect(x,y) do { } while ( 134 #define acct_collect(x,y) do { } while (0)
29 #define acct_process() do { } while ( 135 #define acct_process() do { } while (0)
30 #define acct_exit_ns(ns) do { } while ( 136 #define acct_exit_ns(ns) do { } while (0)
31 #endif 137 #endif
32 138
33 /* 139 /*
34 * ACCT_VERSION numbers as yet defined: 140 * ACCT_VERSION numbers as yet defined:
35 * 0: old format (until 2.6.7) with 16 bit uid 141 * 0: old format (until 2.6.7) with 16 bit uid/gid
36 * 1: extended variant (binary compatible on M 142 * 1: extended variant (binary compatible on M68K)
37 * 2: extended variant (binary compatible on e 143 * 2: extended variant (binary compatible on everything except M68K)
38 * 3: new binary incompatible format (64 bytes 144 * 3: new binary incompatible format (64 bytes)
39 * 4: new binary incompatible format (128 byte 145 * 4: new binary incompatible format (128 bytes)
40 * 5: new binary incompatible format (128 byte 146 * 5: new binary incompatible format (128 bytes, second half)
41 * 147 *
42 */ 148 */
43 149
44 #undef ACCT_VERSION <<
45 #undef AHZ <<
46 <<
47 #ifdef CONFIG_BSD_PROCESS_ACCT_V3 150 #ifdef CONFIG_BSD_PROCESS_ACCT_V3
48 #define ACCT_VERSION 3 151 #define ACCT_VERSION 3
49 #define AHZ 100 152 #define AHZ 100
50 typedef struct acct_v3 acct_t; 153 typedef struct acct_v3 acct_t;
51 #else 154 #else
52 #ifdef CONFIG_M68K 155 #ifdef CONFIG_M68K
53 #define ACCT_VERSION 1 156 #define ACCT_VERSION 1
54 #else 157 #else
55 #define ACCT_VERSION 2 158 #define ACCT_VERSION 2
56 #endif 159 #endif
57 #define AHZ (USER_HZ) 160 #define AHZ (USER_HZ)
58 typedef struct acct acct_t; 161 typedef struct acct acct_t;
59 #endif 162 #endif
60 163
>> 164 #else
>> 165 #define ACCT_VERSION 2
>> 166 #define AHZ (HZ)
>> 167 #endif /* __KERNEL */
>> 168
>> 169 #ifdef __KERNEL__
61 #include <linux/jiffies.h> 170 #include <linux/jiffies.h>
62 /* 171 /*
63 * Yet another set of HZ to *HZ helper functio 172 * Yet another set of HZ to *HZ helper functions.
64 * See <linux/jiffies.h> for the original. 173 * See <linux/jiffies.h> for the original.
65 */ 174 */
66 175
67 static inline u32 jiffies_to_AHZ(unsigned long 176 static inline u32 jiffies_to_AHZ(unsigned long x)
68 { 177 {
69 #if (TICK_NSEC % (NSEC_PER_SEC / AHZ)) == 0 178 #if (TICK_NSEC % (NSEC_PER_SEC / AHZ)) == 0
70 # if HZ < AHZ 179 # if HZ < AHZ
71 return x * (AHZ / HZ); 180 return x * (AHZ / HZ);
72 # else 181 # else
73 return x / (HZ / AHZ); 182 return x / (HZ / AHZ);
74 # endif 183 # endif
75 #else 184 #else
76 u64 tmp = (u64)x * TICK_NSEC; 185 u64 tmp = (u64)x * TICK_NSEC;
77 do_div(tmp, (NSEC_PER_SEC / AHZ)); 186 do_div(tmp, (NSEC_PER_SEC / AHZ));
78 return (long)tmp; 187 return (long)tmp;
79 #endif 188 #endif
80 } 189 }
81 190
82 static inline u64 nsec_to_AHZ(u64 x) 191 static inline u64 nsec_to_AHZ(u64 x)
83 { 192 {
84 #if (NSEC_PER_SEC % AHZ) == 0 193 #if (NSEC_PER_SEC % AHZ) == 0
85 do_div(x, (NSEC_PER_SEC / AHZ)); 194 do_div(x, (NSEC_PER_SEC / AHZ));
86 #elif (AHZ % 512) == 0 195 #elif (AHZ % 512) == 0
87 x *= AHZ/512; 196 x *= AHZ/512;
88 do_div(x, (NSEC_PER_SEC / 512)); 197 do_div(x, (NSEC_PER_SEC / 512));
89 #else 198 #else
90 /* 199 /*
91 * max relative error 5.7e-8 (1.8s per 200 * max relative error 5.7e-8 (1.8s per year) for AHZ <= 1024,
92 * overflow after 64.99 years. 201 * overflow after 64.99 years.
93 * exact for AHZ=60, 72, 90, 120, 144, 202 * exact for AHZ=60, 72, 90, 120, 144, 180, 300, 600, 900, ...
94 */ 203 */
95 x *= 9; 204 x *= 9;
96 do_div(x, (unsigned long)((9ull * NSEC 205 do_div(x, (unsigned long)((9ull * NSEC_PER_SEC + (AHZ/2))
97 / AHZ)); 206 / AHZ));
98 #endif 207 #endif
99 return x; 208 return x;
100 } 209 }
>> 210
>> 211 #endif /* __KERNEL */
101 212
102 #endif /* _LINUX_ACCT_H */ 213 #endif /* _LINUX_ACCT_H */
103 214
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