#include <sys/cdefs.h>
#include "opt_ddb.h"
#include "opt_ktr.h"
#include "opt_alq.h"
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/alq.h>
#include <sys/cons.h>
#include <sys/cpuset.h>
#include <sys/kdb.h>
#include <sys/kernel.h>
#include <sys/ktr.h>
#include <sys/libkern.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <sys/smp.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <sys/time.h>
#include <machine/cpu.h>

Include dependency graph for kern_ktr.c:

Macros
#define	KTR_BOOT_ENTRIES 1024

#define	KTR_ENTRIES 1024

#define	KTR_ENTRIES_MAX (8 * 1024 * 1024)

#define	KTR_MASK (0)

#define	KTR_CPUMASK CPUSET_FSET

#define	KTR_TIME get_cyclecount()

#define	KTR_CPU PCPU_GET(cpuid)

Functions
	__FBSDID ("$FreeBSD$")

static	MALLOC_DEFINE (M_KTR, "KTR", "KTR")

	FEATURE (ktr, "Kernel support for KTR kernel tracing facility")

static	SYSCTL_NODE (_debug, OID_AUTO, ktr, CTLFLAG_RD\|CTLFLAG_MPSAFE, 0, "KTR options")

	SYSCTL_INT (_debug_ktr, OID_AUTO, version, CTLFLAG_RD, &ktr_version, 0, "Version of the KTR interface")

	SYSCTL_UQUAD (_debug_ktr, OID_AUTO, compile, CTLFLAG_RD, &ktr_compile, 0, "Bitmask of KTR event classes compiled into the kernel")

static int	sysctl_debug_ktr_cpumask (SYSCTL_HANDLER_ARGS)

	SYSCTL_PROC (_debug_ktr, OID_AUTO, cpumask, CTLFLAG_RWTUN\|CTLFLAG_MPSAFE\|CTLTYPE_STRING, NULL, 0, sysctl_debug_ktr_cpumask, "S", "Bitmask of CPUs on which KTR logging is enabled")

static int	sysctl_debug_ktr_clear (SYSCTL_HANDLER_ARGS)

	SYSCTL_PROC (_debug_ktr, OID_AUTO, clear, CTLTYPE_INT\|CTLFLAG_RW\|CTLFLAG_NEEDGIANT, 0, 0, sysctl_debug_ktr_clear, "I", "Clear KTR Buffer")

static int	sysctl_debug_ktr_mask (SYSCTL_HANDLER_ARGS)

	SYSCTL_PROC (_debug_ktr, OID_AUTO, mask, CTLTYPE_U64\|CTLFLAG_RWTUN\|CTLFLAG_NEEDGIANT, 0, 0, sysctl_debug_ktr_mask, "QU", "Bitmask of KTR event classes for which logging is enabled")

static int	sysctl_debug_ktr_entries (SYSCTL_HANDLER_ARGS)

	SYSCTL_PROC (_debug_ktr, OID_AUTO, entries, CTLTYPE_INT\|CTLFLAG_RW\|CTLFLAG_NEEDGIANT, 0, 0, sysctl_debug_ktr_entries, "I", "Number of entries in the KTR buffer")

void	ktr_tracepoint (uint64_t mask, const char file, int line, const char format, u_long arg1, u_long arg2, u_long arg3, u_long arg4, u_long arg5, u_long arg6)

Variables
volatile int	ktr_idx = 0

uint64_t	ktr_mask = KTR_MASK

uint64_t	ktr_compile = KTR_COMPILE

int	ktr_entries = KTR_BOOT_ENTRIES

int	ktr_version = KTR_VERSION

struct ktr_entry	ktr_buf_init [KTR_BOOT_ENTRIES]

struct ktr_entry *	ktr_buf = ktr_buf_init

cpuset_t	ktr_cpumask = CPUSET_T_INITIALIZER(KTR_CPUMASK)

Macro Definition Documentation

◆ KTR_BOOT_ENTRIES

#define KTR_BOOT_ENTRIES 1024

Definition at line 66 of file kern_ktr.c.

◆ KTR_CPU

#define KTR_CPU PCPU_GET(cpuid)

Definition at line 89 of file kern_ktr.c.

◆ KTR_CPUMASK

#define KTR_CPUMASK CPUSET_FSET

Definition at line 81 of file kern_ktr.c.

◆ KTR_ENTRIES

#define KTR_ENTRIES 1024

Definition at line 70 of file kern_ktr.c.

◆ KTR_ENTRIES_MAX

#define KTR_ENTRIES_MAX (8 * 1024 * 1024)

Definition at line 74 of file kern_ktr.c.

◆ KTR_MASK

#define KTR_MASK (0)

Definition at line 77 of file kern_ktr.c.

◆ KTR_TIME

#define KTR_TIME get_cyclecount()

Definition at line 85 of file kern_ktr.c.

Function Documentation

◆ __FBSDID()

__FBSDID ( "$FreeBSD$" )

◆ FEATURE()

FEATURE	(	ktr	,
		"Kernel support for KTR kernel tracing facility"
	)

◆ ktr_tracepoint()

void ktr_tracepoint	(	uint64_t	mask,
		const char *	file,
		int	line,
		const char *	format,
		u_long	arg1,
		u_long	arg2,
		u_long	arg3,
		u_long	arg4,
		u_long	arg5,
		u_long	arg6
	)

Definition at line 320 of file kern_ktr.c.

References alq_get(), kdb_active, ktr_buf, KTR_CPU, ktr_cpumask, ktr_entries, ktr_idx, ktr_mask, KTR_TIME, mask, and printf().

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◆ MALLOC_DEFINE()

static MALLOC_DEFINE	(	M_KTR	,
		"KTR"	,
		"KTR"
	)

static

◆ sysctl_debug_ktr_clear()

static int sysctl_debug_ktr_clear ( SYSCTL_HANDLER_ARGS )

static

Definition at line 138 of file kern_ktr.c.

References ktr_buf, ktr_entries, ktr_idx, and sysctl_handle_int().

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◆ sysctl_debug_ktr_cpumask()

static int sysctl_debug_ktr_cpumask ( SYSCTL_HANDLER_ARGS )

static

Definition at line 115 of file kern_ktr.c.

References cpusetobj_strprint(), cpusetobj_strscan(), ktr_cpumask, and sysctl_handle_string().

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◆ sysctl_debug_ktr_entries()

static int sysctl_debug_ktr_entries ( SYSCTL_HANDLER_ARGS )

static

Definition at line 212 of file kern_ktr.c.

References buf, free(), ktr_buf, ktr_buf_init, ktr_entries, KTR_ENTRIES_MAX, ktr_idx, ktr_mask, malloc(), mask, quiesce_all_cpus(), and sysctl_handle_int().

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◆ sysctl_debug_ktr_mask()

static int sysctl_debug_ktr_mask ( SYSCTL_HANDLER_ARGS )

static

Definition at line 164 of file kern_ktr.c.

References ktr_mask, mask, and sysctl_handle_64().

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◆ SYSCTL_INT()

SYSCTL_INT	(	_debug_ktr	,
		OID_AUTO	,
		version	,
		CTLFLAG_RD	,
		&	ktr_version,
		0	,
		"Version of the KTR interface"
	)

◆ SYSCTL_NODE()

static SYSCTL_NODE	(	_debug	,
		OID_AUTO	,
		ktr	,
		CTLFLAG_RD\|	CTLFLAG_MPSAFE,
		0	,
		"KTR options"
	)

static

◆ SYSCTL_PROC() [1/4]

SYSCTL_PROC	(	_debug_ktr	,
		OID_AUTO	,
		clear	,
		CTLTYPE_INT\|CTLFLAG_RW\|	CTLFLAG_NEEDGIANT,
		0	,
		0	,
		sysctl_debug_ktr_clear	,
		"I"	,
		"Clear KTR Buffer"
	)

◆ SYSCTL_PROC() [2/4]

SYSCTL_PROC	(	_debug_ktr	,
		OID_AUTO	,
		cpumask	,
		CTLFLAG_RWTUN\|CTLFLAG_MPSAFE\|	CTLTYPE_STRING,
		NULL	,
		0	,
		sysctl_debug_ktr_cpumask	,
		"S"	,
		"Bitmask of CPUs on which KTR logging is enabled"
	)

◆ SYSCTL_PROC() [3/4]

SYSCTL_PROC	(	_debug_ktr	,
		OID_AUTO	,
		entries	,
		CTLTYPE_INT\|CTLFLAG_RW\|	CTLFLAG_NEEDGIANT,
		0	,
		0	,
		sysctl_debug_ktr_entries	,
		"I"	,
		"Number of entries in the KTR buffer"
	)

◆ SYSCTL_PROC() [4/4]

SYSCTL_PROC	(	_debug_ktr	,
		OID_AUTO	,
		mask	,
		CTLTYPE_U64\|CTLFLAG_RWTUN\|	CTLFLAG_NEEDGIANT,
		0	,
		0	,
		sysctl_debug_ktr_mask	,
		"QU"	,
		"Bitmask of KTR event classes for which logging is enabled"
	)

◆ SYSCTL_UQUAD()

SYSCTL_UQUAD	(	_debug_ktr	,
		OID_AUTO	,
		compile	,
		CTLFLAG_RD	,
		&	ktr_compile,
		0	,
		"Bitmask of KTR event classes compiled into the kernel"
	)

Variable Documentation

◆ ktr_buf

struct ktr_entry* ktr_buf = ktr_buf_init

Definition at line 102 of file kern_ktr.c.

Referenced by ktr_tracepoint(), sysctl_debug_ktr_clear(), and sysctl_debug_ktr_entries().

◆ ktr_buf_init

struct ktr_entry ktr_buf_init[KTR_BOOT_ENTRIES]

Definition at line 101 of file kern_ktr.c.

Referenced by sysctl_debug_ktr_entries().

◆ ktr_compile

uint64_t ktr_compile = KTR_COMPILE

Definition at line 98 of file kern_ktr.c.

◆ ktr_cpumask

cpuset_t ktr_cpumask = CPUSET_T_INITIALIZER(KTR_CPUMASK)

Definition at line 103 of file kern_ktr.c.

Referenced by ktr_tracepoint(), and sysctl_debug_ktr_cpumask().

◆ ktr_entries

int ktr_entries = KTR_BOOT_ENTRIES

Definition at line 99 of file kern_ktr.c.

Referenced by ktr_tracepoint(), sysctl_debug_ktr_clear(), and sysctl_debug_ktr_entries().

◆ ktr_idx

volatile int ktr_idx = 0

Definition at line 96 of file kern_ktr.c.

Referenced by ktr_tracepoint(), sysctl_debug_ktr_clear(), and sysctl_debug_ktr_entries().

◆ ktr_mask

uint64_t ktr_mask = KTR_MASK

Definition at line 97 of file kern_ktr.c.

Referenced by ktr_tracepoint(), sysctl_debug_ktr_entries(), and sysctl_debug_ktr_mask().

◆ ktr_version

int ktr_version = KTR_VERSION

Definition at line 100 of file kern_ktr.c.

Macros

Functions

Variables

Macro Definition Documentation

◆ KTR_BOOT_ENTRIES

◆ KTR_CPU

◆ KTR_CPUMASK

◆ KTR_ENTRIES

◆ KTR_ENTRIES_MAX

◆ KTR_MASK

◆ KTR_TIME

Function Documentation

◆ __FBSDID()

◆ FEATURE()

◆ ktr_tracepoint()

◆ MALLOC_DEFINE()

◆ sysctl_debug_ktr_clear()

◆ sysctl_debug_ktr_cpumask()

◆ sysctl_debug_ktr_entries()

◆ sysctl_debug_ktr_mask()

◆ SYSCTL_INT()

◆ SYSCTL_NODE()

◆ SYSCTL_PROC() [1/4]

◆ SYSCTL_PROC() [2/4]

◆ SYSCTL_PROC() [3/4]

◆ SYSCTL_PROC() [4/4]

◆ SYSCTL_UQUAD()

Variable Documentation

◆ ktr_buf

◆ ktr_buf_init

◆ ktr_compile

◆ ktr_cpumask

◆ ktr_entries

◆ ktr_idx

◆ ktr_mask

◆ ktr_version