/* Format for per-task data returned to userland when *-ataskexits *-listenerrequestsstatsforatask * *Thestructisversioned.Newerversionsshouldonlyaddfieldsto *thebottomofthestructtomaintainbackwardcompatibility. * * *Toaddnewfields *a)bumpupTASKSTATS_VERSION *b)addcommentindicatingnewversionnumberatendofstruct *c)addnewfieldsafterversioncomment;maintain64-bitalignment
*/
#define TASKSTATS_VERSION 16 #define TS_COMM_LEN 32/* should be >= TASK_COMM_LEN
* in linux/sched.h */
struct taskstats {
/* The version number of this struct. This field is always set to *TAKSTATS_VERSION,whichisdefinedin<linux/taskstats.h>. *Eachtimethestructischanged,thevalueshouldbeincremented.
*/
__u16 version;
__u32 ac_exitcode; /* Exit status */
/* The accounting flags of a task as defined in <linux/acct.h> *DefinedvaluesareAFORK,ASU,ACOMPAT,ACORE,AXSIG,andAGROUP. *(AGROUPsinceversion12).
*/
__u8 ac_flag; /* Record flags */
__u8 ac_nice; /* task_nice */
/* Delay waiting for cpu, while runnable *count,delay_totalNOTupdatedatomically
*/
__u64 cpu_count __attribute__((aligned(8)));
__u64 cpu_delay_total;
/* Following four fields atomically updated using task->delays->lock */
/* Delay waiting for synchronous block I/O to complete *doesnotaccountfordelaysinI/Osubmission
*/
__u64 blkio_count;
__u64 blkio_delay_total;
/* Delay waiting for page fault I/O (swap in only) */
__u64 swapin_count;
__u64 swapin_delay_total;
/* cpu "wall-clock" running time *Onsomearchitectures,valuewilladjustforcputimestolen *fromthekernelininvoluntarywaitsduetovirtualization. *Valueiscumulative,innanoseconds,withoutacorrespondingcount *andwrapsaroundtozerosilentlyonoverflow
*/
__u64 cpu_run_real_total;
/* cpu "virtual" running time *Usestimeintervalsseenbythekerneli.e.noadjustment *forkernel'sinvoluntarywaitsduetovirtualization. *Valueiscumulative,innanoseconds,withoutacorrespondingcount *andwrapsaroundtozerosilentlyonoverflow
*/
__u64 cpu_run_virtual_total; /* Delay accounting fields end */ /* version 1 ends here */
/* Basic Accounting Fields start */ char ac_comm[TS_COMM_LEN]; /* Command name */
__u8 ac_sched __attribute__((aligned(8))); /* Scheduling discipline */
__u8 ac_pad[3];
__u32 ac_uid __attribute__((aligned(8))); /* User ID */
__u32 ac_gid; /* Group ID */
__u32 ac_pid; /* Process ID */
__u32 ac_ppid; /* Parent process ID */ /* __u32 range means times from 1970 to 2106 */
__u32 ac_btime; /* Begin time [sec since 1970] */
__u64 ac_etime __attribute__((aligned(8))); /* Elapsed time [usec] */
__u64 ac_utime; /* User CPU time [usec] */
__u64 ac_stime; /* SYstem CPU time [usec] */
__u64 ac_minflt; /* Minor Page Fault Count */
__u64 ac_majflt; /* Major Page Fault Count */ /* Basic Accounting Fields end */
/* Extended accounting fields start */ /* Accumulated RSS usage in duration of a task, in MBytes-usecs. *Thecurrentrssusageisaddedtothiscountereverytime *atickischargedtoatask'ssystemtime.So,attheendwe *willhavememoryusagemultipliedbysystemtime.Thusan *averageusagepersystemtimeunitcanbecalculated.
*/
__u64 coremem; /* accumulated RSS usage in MB-usec */ /* Accumulated virtual memory usage in duration of a task. *Sameasacct_rss_mem1aboveexceptthatwekeeptrackofVMusage.
*/
__u64 virtmem; /* accumulated VM usage in MB-usec */
/* High watermark of RSS and virtual memory usage in duration of *atask,inKBytes.
*/
__u64 hiwater_rss; /* High-watermark of RSS usage, in KB */
__u64 hiwater_vm; /* High-water VM usage, in KB */
/* The following four fields are I/O statistics of a task. */
__u64 read_char; /* bytes read */
__u64 write_char; /* bytes written */
__u64 read_syscalls; /* read syscalls */
__u64 write_syscalls; /* write syscalls */ /* Extended accounting fields end */
/* v12 begin */
__u32 ac_tgid; /* thread group ID */ /* Thread group walltime up to now. This is total process walltime if *AGROUPflagisset.
*/
__u64 ac_tgetime __attribute__((aligned(8))); /* Lightweight information to identify process binary files. *Thisleavesuserspacetomatchthistoafilesystempath,using *MAJOR()andMINOR()macrostoidentifyadeviceandmountpoint, *theinodetoidentifytheexecutablefile.Thisis/proc/self/exe *attheend,somatchingthemostrecentexec().Valuesarezero *forkernelthreads.
*/
__u64 ac_exe_dev; /* program binary device ID */
__u64 ac_exe_inode; /* program binary inode number */ /* v12 end */
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