kern_pmc.c File Reference

#include <sys/cdefs.h>
#include "opt_hwpmc_hooks.h"
#include <sys/types.h>
#include <sys/ctype.h>
#include <sys/param.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/pmc.h>
#include <sys/pmckern.h>
#include <sys/smp.h>
#include <sys/sysctl.h>
#include <sys/systm.h>

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Macros
#define	PMC_KERNEL_VERSION   0

Functions
	__FBSDID ("$BSDSUniX$")
	MALLOC_DECLARE (M_PMCHOOKS)
	MALLOC_DEFINE (M_PMCHOOKS,"pmchooks","Memory space for PMC hooks")
	SYSCTL_NODE (_kern, OID_AUTO, hwpmc, CTLFLAG_RW, 0,"HWPMC parameters")
	TUNABLE_INT (PMC_SYSCTL_NAME_PREFIX"softevents",&pmc_softevents)
	SYSCTL_INT (_kern_hwpmc, OID_AUTO, softevents, CTLFLAG_TUN|CTLFLAG_RD,&pmc_softevents, 0,"maximum number of soft events")
	MTX_SYSINIT (pmc_soft_mtx,&pmc_softs_mtx,"pmc-softs", MTX_SPIN)
static void	pmc_init_sx (void)
	SYSINIT (pmcsx, SI_SUB_LOCK, SI_ORDER_MIDDLE, pmc_init_sx, NULL)
int	pmc_cpu_is_active (int cpu)
int	pmc_cpu_is_disabled (int cpu)
int	pmc_cpu_is_present (int cpu)
int	pmc_cpu_is_primary (int cpu)
unsigned int	pmc_cpu_max (void)
static void	pmc_soft_namecleanup (char *name)
void	pmc_soft_ev_register (struct pmc_soft *ps)
void	pmc_soft_ev_deregister (struct pmc_soft *ps)
struct pmc_soft *	pmc_soft_ev_acquire (enum pmc_event ev)
void	pmc_soft_ev_release (struct pmc_soft *ps)
static void	init_hwpmc (void *dummy __unused)
	SYSINIT (hwpmc, SI_SUB_KDTRACE, SI_ORDER_FIRST, init_hwpmc, NULL)

Variables
const int	pmc_kernel_version = PMC_KERNEL_VERSION
int(*	pmc_hook )(struct thread *td, int function, void *arg) = NULL
int(*	pmc_intr )(int cpu, struct trapframe *tf) = NULL
volatile cpuset_t	pmc_cpumask
volatile int	pmc_ss_count
struct sx	pmc_sx
struct trapframe	pmc_tf [MAXCPU]
static int	pmc_softevents = 16
struct mtx	pmc_softs_mtx
int	pmc_softs_count
struct pmc_soft **	pmc_softs

Macro Definition Documentation

#define PMC_KERNEL_VERSION   0

Definition at line 53 of file kern_pmc.c.

Function Documentation

__FBSDID

(

"$BSDSUniX$"

)

static void init_hwpmc ( void *dummy  __unused )

static

Definition at line 332 of file kern_pmc.c.

References malloc(), pmc_softevents, pmc_softs, and printf().

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MALLOC_DECLARE

(

M_PMCHOOKS

)

MALLOC_DEFINE	(	M_PMCHOOKS	,
		"pmchooks"	,
		"Memory space for PMC hooks"
	)

MTX_SYSINIT	(	pmc_soft_mtx	,
		&	pmc_softs_mtx,
		"pmc-softs"	,
		MTX_SPIN
	)

int pmc_cpu_is_active

(

int

cpu

)

Definition at line 143 of file kern_pmc.c.

References pmc_cpu_is_present().

Referenced by pmc_cpu_is_disabled().

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int pmc_cpu_is_disabled

(

int

cpu

)

Definition at line 155 of file kern_pmc.c.

References pmc_cpu_is_active().

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int pmc_cpu_is_present

(

int

cpu

)

Definition at line 161 of file kern_pmc.c.

Referenced by pmc_cpu_is_active().

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int pmc_cpu_is_primary

(

int

cpu

)

Definition at line 171 of file kern_pmc.c.

unsigned int pmc_cpu_max

(

void

)

Definition at line 187 of file kern_pmc.c.

References mp_maxid.

static void pmc_init_sx ( void  )

static

Definition at line 110 of file kern_pmc.c.

References pmc_sx, and sx_init_flags().

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struct pmc_soft* pmc_soft_ev_acquire

(

enum pmc_event

ev

)

Definition at line 301 of file kern_pmc.c.

References pmc_softevents, pmc_softs, and pmc_softs_mtx.

void pmc_soft_ev_deregister

(

struct pmc_soft *

ps

)

Definition at line 282 of file kern_pmc.c.

References pmc_softevents, pmc_softs, and pmc_softs_mtx.

void pmc_soft_ev_register

(

struct pmc_soft *

ps

)

Definition at line 242 of file kern_pmc.c.

References pmc_soft_namecleanup(), pmc_softevents, pmc_softs, pmc_softs_count, pmc_softs_mtx, and printf().

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void pmc_soft_ev_release

(

struct pmc_soft *

ps

)

Definition at line 322 of file kern_pmc.c.

References pmc_softs_mtx.

static void pmc_soft_namecleanup ( char *  name )

static

Definition at line 224 of file kern_pmc.c.

References name.

Referenced by pmc_soft_ev_register().

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SYSCTL_INT	(	_kern_hwpmc	,
		OID_AUTO	,
		softevents	,
		CTLFLAG_TUN|	CTLFLAG_RD,
		&	pmc_softevents,
		0	,
		"maximum number of soft events"
	)

SYSCTL_NODE	(	_kern	,
		OID_AUTO	,
		hwpmc	,
		CTLFLAG_RW	,
		0	,
		"HWPMC parameters"
	)

SYSINIT	(	pmcsx	,
		SI_SUB_LOCK	,
		SI_ORDER_MIDDLE	,
		pmc_init_sx	,
		NULL
	)

SYSINIT	(	hwpmc	,
		SI_SUB_KDTRACE	,
		SI_ORDER_FIRST	,
		init_hwpmc	,
		NULL
	)

TUNABLE_INT	(	PMC_SYSCTL_NAME_PREFIX"softevents"	,
		&	pmc_softevents
	)

Variable Documentation

volatile cpuset_t pmc_cpumask

Definition at line 68 of file kern_pmc.c.

int(* pmc_hook) (struct thread *td, int function, void *arg) = NULL

Definition at line 62 of file kern_pmc.c.

int(* pmc_intr) (int cpu, struct trapframe *tf) = NULL

Definition at line 65 of file kern_pmc.c.

const int pmc_kernel_version = PMC_KERNEL_VERSION

Definition at line 59 of file kern_pmc.c.

int pmc_softevents = 16

static

Definition at line 98 of file kern_pmc.c.

Referenced by init_hwpmc(), pmc_soft_ev_acquire(), pmc_soft_ev_deregister(), and pmc_soft_ev_register().

struct pmc_soft** pmc_softs

Definition at line 105 of file kern_pmc.c.

Referenced by init_hwpmc(), pmc_soft_ev_acquire(), pmc_soft_ev_deregister(), and pmc_soft_ev_register().

int pmc_softs_count

Definition at line 104 of file kern_pmc.c.

Referenced by pmc_soft_ev_register().

struct mtx pmc_softs_mtx

Definition at line 103 of file kern_pmc.c.

Referenced by pmc_soft_ev_acquire(), pmc_soft_ev_deregister(), pmc_soft_ev_register(), and pmc_soft_ev_release().

volatile int pmc_ss_count

Definition at line 74 of file kern_pmc.c.

struct sx pmc_sx

Definition at line 85 of file kern_pmc.c.

Referenced by pmc_init_sx().

struct trapframe pmc_tf[MAXCPU]

Definition at line 90 of file kern_pmc.c.