/* * 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 #include #include /* * comp_t is a 16-bit "floating" point number with a 3-bit base 8 * exponent and a 13-bit fraction. * comp2_t is 24-bit with 5-bit base 2 exponent and 20 bit fraction * (leading 1 not stored). * See linux/kernel/acct.c for the specific encoding systems used. */ typedef __u16 comp_t; typedef __u32 comp2_t; /* * accounting file record * * This structure contains all of the information written out to the * process accounting file whenever a process exits. */ #define ACCT_COMM 16 struct acct { char ac_flag; /* Flags */ char ac_version; /* Always set to ACCT_VERSION */ /* for binary compatibility back until 2.0 */ __u16 ac_uid16; /* LSB of Real User ID */ __u16 ac_gid16; /* LSB of Real Group ID */ __u16 ac_tty; /* Control Terminal */ __u32 ac_btime; /* Process Creation Time */ comp_t ac_utime; /* User Time */ comp_t ac_stime; /* System Time */ comp_t ac_etime; /* Elapsed Time */ comp_t ac_mem; /* Average Memory Usage */ comp_t ac_io; /* Chars Transferred */ comp_t ac_rw; /* Blocks Read or Written */ comp_t ac_minflt; /* Minor Pagefaults */ comp_t ac_majflt; /* Major Pagefaults */ comp_t ac_swaps; /* Number of Swaps */ /* m68k had no padding here. */ #if !defined(CONFIG_M68K) || !defined(__KERNEL__) __u16 ac_ahz; /* AHZ */ #endif __u32 ac_exitcode; /* Exitcode */ char ac_comm[ACCT_COMM + 1]; /* Command Name */ __u8 ac_etime_hi; /* Elapsed Time MSB */ __u16 ac_etime_lo; /* Elapsed Time LSB */ __u32 ac_uid; /* Real User ID */ __u32 ac_gid; /* Real Group ID */ }; struct acct_v3 { char ac_flag; /* Flags */ char ac_version; /* Always set to ACCT_VERSION */ __u16 ac_tty; /* Control Terminal */ __u32 ac_exitcode; /* Exitcode */ __u32 ac_uid; /* Real User ID */ __u32 ac_gid; /* Real Group ID */ __u32 ac_pid; /* Process ID */ __u32 ac_ppid; /* Parent Process ID */ __u32 ac_btime; /* Process Creation Time */ #ifdef __KERNEL__ __u32 ac_etime; /* Elapsed Time */ #else float ac_etime; /* Elapsed Time */ #endif comp_t ac_utime; /* User Time */ comp_t ac_stime; /* System Time */ comp_t ac_mem; /* Average Memory Usage */ comp_t ac_io; /* Chars Transferred */ comp_t ac_rw; /* Blocks Read or Written */ comp_t ac_minflt; /* Minor Pagefaults */ comp_t ac_majflt; /* Major Pagefaults */ comp_t ac_swaps; /* Number of Swaps */ char ac_comm[ACCT_COMM]; /* Command Name */ }; /* * accounting flags */ /* bit set when the process ... */ #define AFORK 0x01 /* ... executed fork, but did not exec */ #define ASU 0x02 /* ... used super-user privileges */ #define ACOMPAT 0x04 /* ... used compatibility mode (VAX only not used) */ #define ACORE 0x08 /* ... dumped core */ #define AXSIG 0x10 /* ... was killed by a signal */ #ifdef __BIG_ENDIAN #define ACCT_BYTEORDER 0x80 /* accounting file is big endian */ #else #define ACCT_BYTEORDER 0x00 /* accounting file is little endian */ #endif #ifdef __KERNEL__ #ifdef CONFIG_BSD_PROCESS_ACCT struct vfsmount; struct super_block; struct pacct_struct; extern void acct_auto_close_mnt(struct vfsmount *m); extern void acct_auto_close(struct super_block *sb); extern void acct_init_pacct(struct pacct_struct *pacct); extern void acct_collect(long exitcode, int group_dead); extern void acct_process(void); #else #define acct_auto_close_mnt(x) do { } while (0) #define acct_auto_close(x) do { } while (0) #define acct_init_pacct(x) do { } while (0) #define acct_collect(x,y) do { } while (0) #define acct_process() 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) * */ #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 #else #define ACCT_VERSION 2 #define AHZ (HZ) #endif /* __KERNEL */ #ifdef __KERNEL__ #include /* * Yet another set of HZ to *HZ helper functions. * See 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 /* __KERNEL */ #endif /* _LINUX_ACCT_H */ -off-by: Steven Rostedt <rostedt@goodmis.org> tracing: add trace_seq_vprint interface 2009-06-09T19:17:32Z Steven Rostedt srostedt@redhat.com 2009-06-08T23:09:45Z urn:sha1:725c624a58a10ef90a2ff889e122158fabf36147 The code to update the print formats for events requires a vprintf format in the trace_seq. This patch adds that interface. Signed-off-by: Steven Rostedt <rostedt@goodmis.org> tracing: remove dangling semicolon 2009-04-20T16:59:29Z Steven Rostedt srostedt@redhat.com 2009-04-20T16:59:29Z urn:sha1:23de29de2d8b227943be191d59fb6d983996d55e Due to a cut and paste error, the trace_seq_putc had a semicolon after the prototype but before the stub function when tracing is disabled. [Impact: fix compile error ] Signed-off-by: Steven Rostedt <rostedt@goodmis.org> tracing: remove format attribute of inline function 2009-04-18T07:49:10Z Steven Rostedt rostedt@goodmis.org 2009-04-17T21:17:55Z urn:sha1:8e668b5b3455207e4540fc7ccab9ecf70142f288 Due to a cut and paste error, I added the gcc attribute for printf format to the static inline stub of trace_seq_printf. This will cause a compile failure. [ Impact: fix compiler error when CONFIG_TRACING is off ] Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: =?ISO-8859-15?Q?Fr=E9d=E9ric_Weisbecker?= <fweisbec@gmail.com> LKML-Reference: <alpine.DEB.2.00.0904171717080.1016@gandalf.stny.rr.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> tracing/events: add support for modules to TRACE_EVENT 2009-04-14T16:58:03Z Steven Rostedt srostedt@redhat.com 2009-04-10T18:53:50Z urn:sha1:6d723736e472f7a0cd5b62c84152fceead241328 Impact: allow modules to add TRACE_EVENTS on load This patch adds the final hooks to allow modules to use the TRACE_EVENT macro. A notifier and a data structure are used to link the TRACE_EVENTs defined in the module to connect them with the ftrace event tracing system. It also adds the necessary automated clean ups to the trace events when a module is removed. Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> tracing: make trace_seq operations available for core kernel 2009-04-14T16:57:57Z Steven Rostedt srostedt@redhat.com 2009-04-11T16:59:57Z urn:sha1:9504504cbab29ecb694186b1c5b15d3579c43c51 In the process to make TRACE_EVENT macro work for modules, the trace_seq operations must be available for core kernel code. These operations are quite useful and can be used for other implementations. The main idea is that we create a trace_seq handle that acts very much like the seq_file handle. struct trace_seq *s = kmalloc(sizeof(*s, GFP_KERNEL); trace_seq_init(s); trace_seq_printf(s, "some data %d\n", variable); printk("%s", s->buffer); The main use is to allow a top level function call several other functions that may store printf like data into the buffer. Then at the end, the top level function can process all the data with any method it would like to. It could be passed to userspace, output via printk or even use seq_file: trace_seq_to_user(s, ubuf, cnt); seq_puts(m, s->buffer); Signed-off-by: Steven Rostedt <rostedt@goodmis.org>