#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/kernel.h>
#include <sys/ktr.h>
#include <sys/libkern.h>
#include <sys/proc.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_ENTRIES 1024

#define	KTR_MASK (0)

#define	KTR_TIME get_cyclecount()

#define	KTR_CPU PCPU_GET(cpuid)

Functions
	__FBSDID ("$BSDSUniX$")

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

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

	TUNABLE_INT ("debug.ktr.mask",&ktr_mask)

	SYSCTL_INT (_debug_ktr, OID_AUTO, mask, CTLFLAG_RW,&ktr_mask, 0,"Bitmask of KTR event classes for which logging is enabled")

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

	SYSCTL_INT (_debug_ktr, OID_AUTO, entries, CTLFLAG_RD,&ktr_entries, 0,"Number of entries in the KTR buffer")

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

	TUNABLE_STR ("debug.ktr.cpumask", ktr_cpumask_str, sizeof(ktr_cpumask_str))

static void	ktr_cpumask_initializer (void *dummy __unused)

	SYSINIT (ktr_cpumask_initializer, SI_SUB_TUNABLES, SI_ORDER_ANY, ktr_cpumask_initializer, NULL)

static int	sysctl_debug_ktr_cpumask (SYSCTL_HANDLER_ARGS)

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

void	ktr_tracepoint (u_int 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
int	ktr_mask = KTR_MASK

int	ktr_compile = KTR_COMPILE

int	ktr_entries = KTR_ENTRIES

int	ktr_version = KTR_VERSION

cpuset_t	ktr_cpumask

static char	ktr_cpumask_str [CPUSETBUFSIZ]

volatile int	ktr_idx = 0

struct ktr_entry	ktr_buf [KTR_ENTRIES]

Macro Definition Documentation

#define KTR_CPU PCPU_GET(cpuid)

Definition at line 75 of file kern_ktr.c.

Referenced by ktr_tracepoint().

#define KTR_ENTRIES 1024

Definition at line 63 of file kern_ktr.c.

Referenced by ktr_tracepoint().

#define KTR_MASK (0)

Definition at line 67 of file kern_ktr.c.

#define KTR_TIME get_cyclecount()

Definition at line 71 of file kern_ktr.c.

Referenced by ktr_tracepoint().

Function Documentation

__FBSDID ( "$BSDSUniX$" )

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

static void ktr_cpumask_initializer ( void *dummy __unused )

static

Definition at line 104 of file kern_ktr.c.

References cpusetobj_strscan(), ktr_cpumask, and ktr_cpumask_str.

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void ktr_tracepoint	(	u_int	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 235 of file kern_ktr.c.

References alq_get(), ktr_buf, KTR_CPU, ktr_cpumask, KTR_ENTRIES, ktr_idx, ktr_mask, KTR_TIME, panicstr, and printf().

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static int sysctl_debug_ktr_clear ( SYSCTL_HANDLER_ARGS )

static

Definition at line 151 of file kern_ktr.c.

References ktr_buf, and sysctl_handle_int().

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static int sysctl_debug_ktr_cpumask ( SYSCTL_HANDLER_ARGS )

static

Definition at line 125 of file kern_ktr.c.

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

Here is the call graph for this function:

SYSCTL_INT	(	_debug_ktr	,
		OID_AUTO	,
		mask	,
		CTLFLAG_RW	,
		&	ktr_mask,
		0	,
		"Bitmask of KTR event classes for which logging is enabled"
	)

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

SYSCTL_INT	(	_debug_ktr	,
		OID_AUTO	,
		entries	,
		CTLFLAG_RD	,
		&	ktr_entries,
		0	,
		"Number of entries in the KTR buffer"
	)

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

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

static

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