hwsampler.c File Reference

#include <linux/kernel_stat.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/smp.h>
#include <linux/errno.h>
#include <linux/workqueue.h>
#include <linux/interrupt.h>
#include <linux/notifier.h>
#include <linux/cpu.h>
#include <linux/semaphore.h>
#include <linux/oom.h>
#include <linux/oprofile.h>
#include <asm/facility.h>
#include <asm/cpu_mf.h>
#include <asm/irq.h>
#include "hwsampler.h"
#include "op_counter.h"

Go to the source code of this file.

Data Structures
struct	hws_execute_parms

Macros
#define	MAX_NUM_SDB   511
#define	MIN_NUM_SDB   1
#define	ALERT_REQ_MASK   0x4000000000000000ul
#define	BUFFER_FULL_MASK   0x8000000000000000ul

Enumerations
enum	{   HWS_INIT = 1, HWS_DEALLOCATED, HWS_STOPPED, HWS_STARTED,   HWS_STOPPING }

Functions
	DECLARE_PER_CPU (struct hws_cpu_buffer, sampler_cpu_buffer)
	DEFINE_PER_CPU (struct hws_cpu_buffer, sampler_cpu_buffer)
	EXPORT_PER_CPU_SYMBOL (sampler_cpu_buffer)
int	hwsampler_deactivate (unsigned int cpu)
int	hwsampler_activate (unsigned int cpu)
int	hwsampler_allocate (unsigned long sdbt, unsigned long sdb)
int	hwsampler_deallocate (void)
unsigned long	hwsampler_query_min_interval (void)
unsigned long	hwsampler_query_max_interval (void)
unsigned long	hwsampler_get_sample_overflow_count (unsigned int cpu)
int	hwsampler_setup (void)
int	hwsampler_shutdown (void)
int	hwsampler_start_all (unsigned long rate)
int	hwsampler_stop_all (void)

Macro Definition Documentation

#define ALERT_REQ_MASK   0x4000000000000000ul

Definition at line 29 of file hwsampler.c.

#define BUFFER_FULL_MASK   0x8000000000000000ul

Definition at line 30 of file hwsampler.c.

#define MAX_NUM_SDB   511

Definition at line 26 of file hwsampler.c.

#define MIN_NUM_SDB   1

Definition at line 27 of file hwsampler.c.

Enumeration Type Documentation

anonymous enum

Enumerator:

HWS_INIT
HWS_DEALLOCATED
HWS_STOPPED
HWS_STARTED
HWS_STOPPING

Definition at line 50 of file hwsampler.c.

Function Documentation

DECLARE_PER_CPU	(	struct hws_cpu_buffer	,
		sampler_cpu_buffer
	)

DEFINE_PER_CPU	(	struct hws_cpu_buffer	,
		sampler_cpu_buffer
	)

EXPORT_PER_CPU_SYMBOL

(

sampler_cpu_buffer

)

int hwsampler_activate

(

unsigned int

cpu

)

hwsampler_activate() - activate/resume hardware sampling which was deactivated : specifies the CPU to be set active.

Returns 0 on success, !0 on failure.

Definition at line 648 of file hwsampler.c.

int hwsampler_allocate	(	unsigned long	sdbt,
		unsigned long	sdb
	)

hwsampler_allocate() - allocate memory for the hardware sampler : number of SDBTs per online CPU (must be > 0) : number of SDBs per SDBT (minimum 1, maximum 511)

Returns 0 on success, !0 on failure.

Definition at line 945 of file hwsampler.c.

int hwsampler_deactivate

(

unsigned int

cpu

)

hwsampler_deactivate() - set hardware sampling temporarily inactive : specifies the CPU to be set inactive.

Returns 0 on success, !0 on failure.

Definition at line 601 of file hwsampler.c.

int hwsampler_deallocate

(

void

)

hwsampler_deallocate() - deallocate hardware sampler memory

Returns 0 on success, !0 on failure.

Definition at line 994 of file hwsampler.c.

unsigned long hwsampler_get_sample_overflow_count

(

unsigned int

cpu

)

Definition at line 1026 of file hwsampler.c.

unsigned long hwsampler_query_max_interval

(

void

)

Definition at line 1021 of file hwsampler.c.

unsigned long hwsampler_query_min_interval

(

void

)

Definition at line 1016 of file hwsampler.c.

int hwsampler_setup

(

void

)

Definition at line 1035 of file hwsampler.c.

int hwsampler_shutdown

(

void

)

Definition at line 1102 of file hwsampler.c.

int hwsampler_start_all

(

unsigned long

rate

)

hwsampler_start_all() - start hardware sampling on all online CPUs : specifies the used interval when samples are taken

Returns 0 on success, !0 on failure.

Definition at line 1143 of file hwsampler.c.

int hwsampler_stop_all

(

void

)

hwsampler_stop_all() - stop hardware sampling on all online CPUs

Returns 0 on success, !0 on failure.

Definition at line 1203 of file hwsampler.c.