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 19
>> 20 /*
>> 21 * comp_t is a 16-bit "floating" point number with a 3-bit base 8
>> 22 * exponent and a 13-bit fraction. See linux/kernel/acct.c for the
>> 23 * specific encoding system used.
>> 24 */
21 25
22 #ifdef CONFIG_BSD_PROCESS_ACCT !! 26 typedef __u16 comp_t;
23 struct pid_namespace; <<
24 extern void acct_collect(long exitcode, int gr <<
25 extern void acct_process(void); <<
26 extern void acct_exit_ns(struct pid_namespace <<
27 #else <<
28 #define acct_collect(x,y) do { } while ( <<
29 #define acct_process() do { } while ( <<
30 #define acct_exit_ns(ns) do { } while ( <<
31 #endif <<
32 27
33 /* 28 /*
34 * ACCT_VERSION numbers as yet defined: !! 29 * accounting file record
35 * 0: old format (until 2.6.7) with 16 bit uid <<
36 * 1: extended variant (binary compatible on M <<
37 * 2: extended variant (binary compatible on e <<
38 * 3: new binary incompatible format (64 bytes <<
39 * 4: new binary incompatible format (128 byte <<
40 * 5: new binary incompatible format (128 byte <<
41 * 30 *
>> 31 * This structure contains all of the information written out to the
>> 32 * process accounting file whenever a process exits.
42 */ 33 */
43 34
44 #undef ACCT_VERSION !! 35 #define ACCT_COMM 16
45 #undef AHZ <<
46 36
47 #ifdef CONFIG_BSD_PROCESS_ACCT_V3 !! 37 struct acct
48 #define ACCT_VERSION 3 !! 38 {
49 #define AHZ 100 !! 39 char ac_flag; /* Accounting Flags */
50 typedef struct acct_v3 acct_t; !! 40 /*
51 #else !! 41 * No binary format break with 2.0 - but when we hit 32bit uid we'll
52 #ifdef CONFIG_M68K !! 42 * have to bite one
53 #define ACCT_VERSION 1 !! 43 */
54 #else !! 44 __u16 ac_uid; /* Accounting Real User ID */
55 #define ACCT_VERSION 2 !! 45 __u16 ac_gid; /* Accounting Real Group ID */
56 #endif !! 46 __u16 ac_tty; /* Accounting Control Terminal */
57 #define AHZ (USER_HZ) !! 47 __u32 ac_btime; /* Accounting Process Creation Time */
58 typedef struct acct acct_t; !! 48 comp_t ac_utime; /* Accounting User Time */
59 #endif !! 49 comp_t ac_stime; /* Accounting System Time */
>> 50 comp_t ac_etime; /* Accounting Elapsed Time */
>> 51 comp_t ac_mem; /* Accounting Average Memory Usage */
>> 52 comp_t ac_io; /* Accounting Chars Transferred */
>> 53 comp_t ac_rw; /* Accounting Blocks Read or Written */
>> 54 comp_t ac_minflt; /* Accounting Minor Pagefaults */
>> 55 comp_t ac_majflt; /* Accounting Major Pagefaults */
>> 56 comp_t ac_swaps; /* Accounting Number of Swaps */
>> 57 __u32 ac_exitcode; /* Accounting Exitcode */
>> 58 char ac_comm[ACCT_COMM + 1]; /* Accounting Command Name */
>> 59 char ac_pad[10]; /* Accounting Padding Bytes */
>> 60 };
60 61
61 #include <linux/jiffies.h> <<
62 /* 62 /*
63 * Yet another set of HZ to *HZ helper functio !! 63 * accounting flags
64 * See <linux/jiffies.h> for the original. <<
65 */ 64 */
>> 65 /* bit set when the process ... */
>> 66 #define AFORK 0x01 /* ... executed fork, but did not exec */
>> 67 #define ASU 0x02 /* ... used super-user privileges */
>> 68 #define ACOMPAT 0x04 /* ... used compatibility mode (VAX only not used) */
>> 69 #define ACORE 0x08 /* ... dumped core */
>> 70 #define AXSIG 0x10 /* ... was killed by a signal */
66 71
67 static inline u32 jiffies_to_AHZ(unsigned long !! 72 #define AHZ 100
68 { <<
69 #if (TICK_NSEC % (NSEC_PER_SEC / AHZ)) == 0 <<
70 # if HZ < AHZ <<
71 return x * (AHZ / HZ); <<
72 # else <<
73 return x / (HZ / AHZ); <<
74 # endif <<
75 #else <<
76 u64 tmp = (u64)x * TICK_NSEC; <<
77 do_div(tmp, (NSEC_PER_SEC / AHZ)); <<
78 return (long)tmp; <<
79 #endif <<
80 } <<
81 73
82 static inline u64 nsec_to_AHZ(u64 x) !! 74 #ifdef __KERNEL__
83 { !! 75
84 #if (NSEC_PER_SEC % AHZ) == 0 !! 76 #include <linux/config.h>
85 do_div(x, (NSEC_PER_SEC / AHZ)); !! 77
86 #elif (AHZ % 512) == 0 !! 78 #ifdef CONFIG_BSD_PROCESS_ACCT
87 x *= AHZ/512; !! 79 extern void acct_auto_close(kdev_t dev);
88 do_div(x, (NSEC_PER_SEC / 512)); !! 80 extern int acct_process(long exitcode);
89 #else 81 #else
90 /* !! 82 #define acct_auto_close(x) do { } while (0)
91 * max relative error 5.7e-8 (1.8s per !! 83 #define acct_process(x) do { } while (0)
92 * overflow after 64.99 years. <<
93 * exact for AHZ=60, 72, 90, 120, 144, <<
94 */ <<
95 x *= 9; <<
96 do_div(x, (unsigned long)((9ull * NSEC <<
97 / AHZ)); <<
98 #endif 84 #endif
99 return x; !! 85
100 } !! 86 #endif /* __KERNEL */
101 87
102 #endif /* _LINUX_ACCT_H */ 88 #endif /* _LINUX_ACCT_H */
103 89
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