struct_task_cputime(9) [centos man page]

STRUCT 
TASK_CPUTIME(9)						   Driver Basics					    STRUCT TASK_CPUTIME(9)

NAME

       struct_task_cputime - collected CPU time counts

SYNOPSIS

       struct task_cputime {
	 cputime_t utime;
	 cputime_t stime;
	 unsigned long long sum_exec_runtime;
       };

MEMBERS

       utime
	   time spent in user mode, in cputime_t units

       stime
	   time spent in kernel mode, in cputime_t units

       sum_exec_runtime
	   total time spent on the CPU, in nanoseconds

DESCRIPTION

       This is an extension of struct cputime that includes the total runtime spent by the task from the scheduler point of view.

       As a result, this structure groups together three kinds of CPU time that are tracked for threads and thread groups. Most things considering
       CPU time want to group these counts together and treat all three of them in parallel.

COPYRIGHT

Kernel Hackers Manual 3.10					     June 2014						    STRUCT TASK_CPUTIME(9)

STRUCT 
HRTIMER(9)						   Driver Basics						 STRUCT HRTIMER(9)

NAME

       struct_hrtimer - the basic hrtimer structure

SYNOPSIS

       struct hrtimer {
	 struct rb_node node;
	 ktime_t _expires;
	 ktime_t _softexpires;
	 enum hrtimer_restart	     (* function) (struct hrtimer *);
	 struct hrtimer_clock_base * base;
	 unsigned long state;
       #ifdef CONFIG_TIMER_STATS
	 int start_pid;
	 void * start_site;
	 char start_comm[16];
       #endif
       };

MEMBERS

       node
	   red black tree node for time ordered insertion

       _expires
	   the absolute expiry time in the hrtimers internal representation. The time is related to the clock on which the timer is based. Is
	   setup by adding slack to the _softexpires value. For non range timers identical to _softexpires.

       _softexpires
	   the absolute earliest expiry time of the hrtimer. The time which was given as expiry time when the timer was armed.

       function
	   timer expiry callback function

       base
	   pointer to the timer base (per cpu and per clock)

       state
	   state information (See bit values above)

       start_pid
	   timer statistics field to store the pid of the task which started the timer

       start_site
	   timer statistics field to store the site where the timer was started

       start_comm[16]
	   timer statistics field to store the name of the process which started the timer

DESCRIPTION

       The hrtimer structure must be initialized by hrtimer_init

COPYRIGHT

Kernel Hackers Manual 2.6.					     July 2010							 STRUCT HRTIMER(9)