INIT_TIMER_KEY(9) Driver Basics INIT_TIMER_KEY(9)NAME
init_timer_key - initialize a timer
SYNOPSIS
void init_timer_key(struct timer_list * timer, const char * name, struct lock_class_key * key);
ARGUMENTS
timer
the timer to be initialized
name
name of the timer
key
lockdep class key of the fake lock used for tracking timer sync lock dependencies
DESCRIPTION
init_timer_key must be done to a timer prior calling *any* of the other timer functions.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 INIT_TIMER_KEY(9)
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STRUCT HRTIMER(9) Driver Basics STRUCT HRTIMER(9)NAME
struct_hrtimer - the basic hrtimer structure
SYNOPSIS
struct hrtimer {
struct timerqueue_node node;
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
timerqueue node, which also manages node.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 3.10 June 2014 STRUCT HRTIMER(9)
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