timer_stats.c File Reference

#include <linux/proc_fs.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/sched.h>
#include <linux/seq_file.h>
#include <linux/kallsyms.h>
#include <asm/uaccess.h>

Go to the source code of this file.

Data Structures
struct	entry

Macros
#define	MAX_ENTRIES_BITS   10
#define	MAX_ENTRIES   (1UL << MAX_ENTRIES_BITS)
#define	TSTAT_HASH_BITS   (MAX_ENTRIES_BITS - 1)
#define	TSTAT_HASH_SIZE   (1UL << TSTAT_HASH_BITS)
#define	TSTAT_HASH_MASK   (TSTAT_HASH_SIZE - 1)
#define	__tstat_hashfn(entry)
#define	tstat_hashentry(entry)   (tstat_hash_table + __tstat_hashfn(entry))

Functions
void	timer_stats_update_stats (void *timer, pid_t pid, void *startf, void *timerf, char *comm, unsigned int timer_flag)
void __init	init_timer_stats (void)
	__initcall (init_tstats_procfs)

Variables
struct entry	____cacheline_aligned_in_smp
int __read_mostly	timer_stats_active

Macro Definition Documentation

#define __tstat_hashfn

(

entry

)

Value:

(((unsigned long)(entry)->timer       ^             \
      (unsigned long)(entry)->start_func  ^             \
      (unsigned long)(entry)->expire_func ^             \
      (unsigned long)(entry)->pid       ) & TSTAT_HASH_MASK)

Definition at line 128 of file timer_stats.c.

#define MAX_ENTRIES   (1UL << MAX_ENTRIES_BITS)

Definition at line 114 of file timer_stats.c.

#define MAX_ENTRIES_BITS   10

Definition at line 113 of file timer_stats.c.

#define TSTAT_HASH_BITS   (MAX_ENTRIES_BITS - 1)

Definition at line 124 of file timer_stats.c.

#define TSTAT_HASH_MASK   (TSTAT_HASH_SIZE - 1)

Definition at line 126 of file timer_stats.c.

#define TSTAT_HASH_SIZE   (1UL << TSTAT_HASH_BITS)

Definition at line 125 of file timer_stats.c.

#define tstat_hashentry

(

entry

)

(tstat_hash_table + __tstat_hashfn(entry))

Definition at line 134 of file timer_stats.c.

Function Documentation

__initcall

(

init_tstats_procfs

)

void __init init_timer_stats

(

void

)

Definition at line 408 of file timer_stats.c.

void timer_stats_update_stats	(	void *	timer,
		pid_t	pid,
		void *	startf,
		void *	timerf,
		char *	comm,
		unsigned int	timer_flag
	)

timer_stats_update_stats - Update the statistics for a timer. : pointer to either a timer_list or a hrtimer : the pid of the task which set up the timer : pointer to the function which did the timer setup : pointer to the timer callback function of the timer : name of the process which set up the timer

When the timer is already registered, then the event counter is incremented. Otherwise the timer is registered in a free slot.

Definition at line 234 of file timer_stats.c.

Variable Documentation

struct entry ____cacheline_aligned_in_smp

int __read_mostly timer_stats_active

Definition at line 99 of file timer_stats.c.