kern_boottrace.c File Reference

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/boottrace.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/pcpu.h>
#include <sys/proc.h>
#include <sys/resourcevar.h>
#include <sys/sbuf.h>
#include <sys/syscallsubr.h>
#include <sys/sysctl.h>
#include <sys/time.h>
#include <machine/stdarg.h>

Include dependency graph for kern_boottrace.c:

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Data Structures
struct	bt_event
struct	bt_table

Macros
#define	dprintf(fmt, ...)
#define	BT_TABLE_DEFSIZE   3000
#define	BT_TABLE_RUNSIZE   2000
#define	BT_TABLE_SHTSIZE   1000
#define	BT_TABLE_MINSIZE   500
#define	BTC_DELTA_PRINT(bte, msecs, delta)

Functions
static	MALLOC_DEFINE (M_BOOTTRACE, "boottrace", "memory for boot tracing")
	TUNABLE_BOOL ("debug.boottrace.dotrace_debugging", &dotrace_debugging)
	TUNABLE_BOOL ("kern.boottrace.dotrace_kernel", &dotrace_kernel)
	TUNABLE_BOOL ("kern.boottrace.dotrace_user", &dotrace_user)
static int	sysctl_log (SYSCTL_HANDLER_ARGS)
static int	sysctl_boottrace (SYSCTL_HANDLER_ARGS)
static int	sysctl_runtrace (SYSCTL_HANDLER_ARGS)
static int	sysctl_shuttrace (SYSCTL_HANDLER_ARGS)
static int	sysctl_boottrace_reset (SYSCTL_HANDLER_ARGS)
	SYSCTL_NODE (_kern, OID_AUTO, boottrace, CTLFLAG_RD|CTLFLAG_MPSAFE, 0, "boottrace statistics")
	SYSCTL_PROC (_kern_boottrace, OID_AUTO, log, CTLTYPE_STRING|CTLFLAG_RD|CTLFLAG_MPSAFE|CTLFLAG_SKIP, 0, 0, sysctl_log, "A", "Print a log of the boottrace trace data")
	SYSCTL_PROC (_kern_boottrace, OID_AUTO, boottrace, CTLTYPE_STRING|CTLFLAG_WR|CTLFLAG_MPSAFE, 0, 0, sysctl_boottrace, "A", "Capture a boot-time trace event")
	SYSCTL_PROC (_kern_boottrace, OID_AUTO, runtrace, CTLTYPE_STRING|CTLFLAG_WR|CTLFLAG_MPSAFE, 0, 0, sysctl_runtrace, "A", "Capture a run-time trace event")
	SYSCTL_PROC (_kern_boottrace, OID_AUTO, shuttrace, CTLTYPE_STRING|CTLFLAG_WR|CTLFLAG_MPSAFE, 0, 0, sysctl_shuttrace, "A", "Capture a shutdown-time trace event")
	SYSCTL_PROC (_kern_boottrace, OID_AUTO, reset, CTLTYPE_INT|CTLFLAG_WR|CTLFLAG_MPSAFE, 0, 0, sysctl_boottrace_reset, "A", "Reset run-time tracing table")
	SYSCTL_BOOL (_kern_boottrace, OID_AUTO, enabled, CTLFLAG_RDTUN, &boottrace_enabled, 0, "Boot-time and shutdown-time tracing enabled")
	SYSCTL_BOOL (_kern_boottrace, OID_AUTO, shutdown_trace, CTLFLAG_RWTUN, &shutdown_trace, 0, "Enable kernel shutdown tracing to the console")
	SYSCTL_INT (_kern_boottrace, OID_AUTO, shutdown_trace_threshold, CTLFLAG_RWTUN, &shutdown_trace_threshold, 0, "Tracing threshold (ms) below which tracing is ignored")
static void	boottrace_display (struct sbuf *sbp, struct bt_table *btp, uint64_t dthres)
void	boottrace_dump_console (void)
static int	dotrace (struct bt_table *btp, const char *eventname, const char *tdname)
int	boottrace (const char *tdname, const char *fmt,...)
static int	runtrace (const char *eventname, const char *tdname)
static void	boottrace_parse_message (char *message, char **eventname, char **tdname)
static int	_boottrace_sysctl (struct bt_table *btp, struct sysctl_oid *oidp, struct sysctl_req *req)
void	boottrace_reset (const char *actor)
int	boottrace_resize (u_int newsize)
static void	boottrace_init (void)
	SYSINIT (boottrace, SI_SUB_CPU, SI_ORDER_ANY, boottrace_init, 0)

Variables
static struct bt_table	bt
static struct bt_table	rt
static struct bt_table	st
static bool	bootdone
static bool	shutdown
static bool	dotrace_debugging
static bool	dotrace_kernel = true
static bool	dotrace_user = true
bool __read_mostly	boottrace_enabled = false
bool	shutdown_trace = false
static int	shutdown_trace_threshold

Macro Definition Documentation

BT_TABLE_DEFSIZE

#define BT_TABLE_DEFSIZE   3000

Definition at line 50 of file kern_boottrace.c.

BT_TABLE_MINSIZE

#define BT_TABLE_MINSIZE   500

Definition at line 53 of file kern_boottrace.c.

BT_TABLE_RUNSIZE

#define BT_TABLE_RUNSIZE   2000

Definition at line 51 of file kern_boottrace.c.

BT_TABLE_SHTSIZE

#define BT_TABLE_SHTSIZE   1000

Definition at line 52 of file kern_boottrace.c.

BTC_DELTA_PRINT

#define BTC_DELTA_PRINT	(		bte,
			msecs,
			delta
	)

Value:

        do {                            \
        if (sbp) {                                                      \
                sbuf_printf(sbp, fmt, (bte)->cpuid, msecs, delta,       \
                    (bte)->tdname, (bte)->name, (bte)->pid,             \
                    (bte)->cputime / 1000000,                           \
                    ((bte)->cputime % 1000000) / 10000,                 \
                    (bte)->inblock, (bte)->oublock);                    \
        } else {                                                        \
                printf(fmt, (bte)->cpuid, msecs, delta,                 \
                    (bte)->tdname, (bte)->name, (bte)->pid,             \
                    (bte)->cputime / 1000000,                           \
                    ((bte)->cputime % 1000000) / 10000,                 \
                    (bte)->inblock, (bte)->oublock);                    \
        }                                                               \
} while (0)

Definition at line 189 of file kern_boottrace.c.

dprintf

#define dprintf	(		fmt,
			...
	)

Value:

        do {                                                            \
                if (dotrace_debugging)                                  \
                        printf(fmt, ##__VA_ARGS__);                     \
        } while (0);

Definition at line 42 of file kern_boottrace.c.

Function Documentation

_boottrace_sysctl()

static int _boottrace_sysctl ( struct bt_table *  btp, struct sysctl_oid *  oidp, struct sysctl_req *  req  )

static

Definition at line 441 of file kern_boottrace.c.

References boottrace_parse_message(), dotrace(), dotrace_user, and sysctl_handle_string().

Referenced by sysctl_boottrace(), sysctl_runtrace(), and sysctl_shuttrace().

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boottrace()

int boottrace	(	const char *	tdname,
		const char *	fmt,
			...
	)

Definition at line 383 of file kern_boottrace.c.

References bootdone, bt, dotrace(), dotrace_kernel, rebooting, rt, shutdown, st, and vsnprintf().

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boottrace_display()

static void boottrace_display ( struct sbuf *  sbp, struct bt_table *  btp, uint64_t  dthres  )

static

Definition at line 211 of file kern_boottrace.c.

References BTC_DELTA_PRINT, cputick2usec(), bt_table::curr, maybe_yield(), printf(), sbuf_printf(), bt_table::size, bt_table::table, bt_event::tick, and bt_event::tsc.

Referenced by boottrace_dump_console(), and sysctl_log().

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boottrace_dump_console()

void boottrace_dump_console

(

void

)

Definition at line 298 of file kern_boottrace.c.

References boottrace_display(), boottrace_enabled, bt, rebooting, rt, shutdown, shutdown_trace_threshold, and st.

Referenced by kern_reboot().

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boottrace_init()

static void boottrace_init ( void  )

static

Definition at line 582 of file kern_boottrace.c.

References boottrace_enabled, bt, BT_TABLE_DEFSIZE, BT_TABLE_MINSIZE, BT_TABLE_RUNSIZE, BT_TABLE_SHTSIZE, bt_event::cpuid, bt_table::curr, malloc(), bt_event::name, rt, bt_table::size, st, bt_table::table, bt_event::tdname, and bt_table::wrap.

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boottrace_parse_message()

static void boottrace_parse_message ( char *  message, char **  eventname, char **  tdname  )

static

Definition at line 425 of file kern_boottrace.c.

Referenced by _boottrace_sysctl().

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boottrace_reset()

void boottrace_reset

(

const char *

actor

)

Definition at line 539 of file kern_boottrace.c.

References runtrace(), and snprintf().

Referenced by boottrace_resize(), and sysctl_boottrace_reset().

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boottrace_resize()

int boottrace_resize

(

u_int

newsize

)

Definition at line 552 of file kern_boottrace.c.

References boottrace_reset(), realloc(), rt, bt_table::size, and bt_table::table.

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dotrace()

static int dotrace ( struct bt_table *  btp, const char *  eventname, const char *  tdname  )

static

Definition at line 318 of file kern_boottrace.c.

References boottrace_enabled, cpu_ticks, bt_event::cpuid, bt_event::cputime, bt_table::curr, dprintf, bt_table::drops_early, bt_table::drops_full, bt_event::inblock, kern_getrusage(), bt_event::name, bt_event::oublock, bt_event::pid, proc0, bt_table::size, bt_table::table, bt_event::tdname, bt_event::tick, ticks, bt_event::tsc, and bt_table::wrap.

Referenced by _boottrace_sysctl(), boottrace(), and runtrace().

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MALLOC_DEFINE()

static MALLOC_DEFINE ( M_BOOTTRACE  , "boottrace"  , "memory for boot tracing"    )

static

runtrace()

static int runtrace ( const char *  eventname, const char *  tdname  )

static

Definition at line 409 of file kern_boottrace.c.

References bootdone, dotrace(), and rt.

Referenced by boottrace_reset().

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SYSCTL_BOOL() [1/2]

SYSCTL_BOOL	(	_kern_boottrace	,
		OID_AUTO	,
		enabled	,
		CTLFLAG_RDTUN	,
		&	boottrace_enabled,
		0	,
		"Boot-time and shutdown-time tracing enabled"
	)

SYSCTL_BOOL() [2/2]

SYSCTL_BOOL	(	_kern_boottrace	,
		OID_AUTO	,
		shutdown_trace	,
		CTLFLAG_RWTUN	,
		&	shutdown_trace,
		0	,
		"Enable kernel shutdown tracing to the console"
	)

sysctl_boottrace()

static int sysctl_boottrace ( SYSCTL_HANDLER_ARGS  )

static

Definition at line 485 of file kern_boottrace.c.

References _boottrace_sysctl(), bootdone, boottrace_enabled, bt, and rt.

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sysctl_boottrace_reset()

static int sysctl_boottrace_reset ( SYSCTL_HANDLER_ARGS  )

static

Definition at line 569 of file kern_boottrace.c.

References boottrace_enabled, and boottrace_reset().

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SYSCTL_INT()

SYSCTL_INT	(	_kern_boottrace	,
		OID_AUTO	,
		shutdown_trace_threshold	,
		CTLFLAG_RWTUN	,
		&	shutdown_trace_threshold,
		0	,
		"Tracing threshold (ms) below which tracing is ignored"
	)

sysctl_log()

static int sysctl_log ( SYSCTL_HANDLER_ARGS  )

static

Definition at line 466 of file kern_boottrace.c.

References boottrace_display(), boottrace_enabled, bt, rt, sbuf_data(), sbuf_delete(), sbuf_finish(), sbuf_len(), and sbuf_new().

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SYSCTL_NODE()

SYSCTL_NODE	(	_kern	,
		OID_AUTO	,
		boottrace	,
		CTLFLAG_RD|	CTLFLAG_MPSAFE,
		0	,
		"boottrace statistics"
	)

SYSCTL_PROC() [1/5]

SYSCTL_PROC	(	_kern_boottrace	,
		OID_AUTO	,
		boottrace	,
		CTLTYPE_STRING|CTLFLAG_WR|	CTLFLAG_MPSAFE,
		0	,
		0	,
		sysctl_boottrace	,
		"A"	,
		"Capture a boot-time trace event"
	)

SYSCTL_PROC() [2/5]

SYSCTL_PROC	(	_kern_boottrace	,
		OID_AUTO	,
		log	,
		CTLTYPE_STRING|CTLFLAG_RD|CTLFLAG_MPSAFE|	CTLFLAG_SKIP,
		0	,
		0	,
		sysctl_log	,
		"A"	,
		"Print a log of the boottrace trace data"
	)

SYSCTL_PROC() [3/5]

SYSCTL_PROC	(	_kern_boottrace	,
		OID_AUTO	,
		reset	,
		CTLTYPE_INT|CTLFLAG_WR|	CTLFLAG_MPSAFE,
		0	,
		0	,
		sysctl_boottrace_reset	,
		"A"	,
		"Reset run-time tracing table"
	)

SYSCTL_PROC() [4/5]

SYSCTL_PROC	(	_kern_boottrace	,
		OID_AUTO	,
		runtrace	,
		CTLTYPE_STRING|CTLFLAG_WR|	CTLFLAG_MPSAFE,
		0	,
		0	,
		sysctl_runtrace	,
		"A"	,
		"Capture a run-time trace event"
	)

SYSCTL_PROC() [5/5]

SYSCTL_PROC	(	_kern_boottrace	,
		OID_AUTO	,
		shuttrace	,
		CTLTYPE_STRING|CTLFLAG_WR|	CTLFLAG_MPSAFE,
		0	,
		0	,
		sysctl_shuttrace	,
		"A"	,
		"Capture a shutdown-time trace event"
	)

sysctl_runtrace()

static int sysctl_runtrace ( SYSCTL_HANDLER_ARGS  )

static

Definition at line 503 of file kern_boottrace.c.

References _boottrace_sysctl(), bootdone, boottrace_enabled, and rt.

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sysctl_shuttrace()

static int sysctl_shuttrace ( SYSCTL_HANDLER_ARGS  )

static

Definition at line 521 of file kern_boottrace.c.

References _boottrace_sysctl(), boottrace_enabled, shutdown, and st.

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SYSINIT()

SYSINIT	(	boottrace	,
		SI_SUB_CPU	,
		SI_ORDER_ANY	,
		boottrace_init	,
		0
	)

TUNABLE_BOOL() [1/3]

TUNABLE_BOOL	(	"debug.boottrace.dotrace_debugging"	,
		&	dotrace_debugging
	)

TUNABLE_BOOL() [2/3]

TUNABLE_BOOL	(	"kern.boottrace.dotrace_kernel"	,
		&	dotrace_kernel
	)

TUNABLE_BOOL() [3/3]

TUNABLE_BOOL	(	"kern.boottrace.dotrace_user"	,
		&	dotrace_user
	)

Variable Documentation

bootdone

bool bootdone

static

Definition at line 89 of file kern_boottrace.c.

Referenced by boottrace(), runtrace(), sysctl_boottrace(), and sysctl_runtrace().

boottrace_enabled

bool __read_mostly boottrace_enabled = false

Definition at line 139 of file kern_boottrace.c.

Referenced by boottrace_dump_console(), boottrace_init(), dotrace(), sysctl_boottrace(), sysctl_boottrace_reset(), sysctl_log(), sysctl_runtrace(), and sysctl_shuttrace().

bt

struct bt_table bt

static

Definition at line 80 of file kern_boottrace.c.

Referenced by _bt_fill(), bintime(), bintime_add_tc_delta(), bintime_off(), binuptime(), boottrace(), boottrace_dump_console(), boottrace_init(), bt_alloc(), bt_free(), bt_freetrim(), bt_insbusy(), bt_insfree(), bt_insseg(), bt_insseg_tail(), bt_isfree(), bt_lookupbusy(), bt_rembusy(), bt_remfree(), bt_remseg(), cpu_new_callout(), dtrace_getnanouptime(), filt_timervalidate(), getbintime(), getbinuptime(), getmicrouptime(), getnanouptime(), init_va_filerev(), kqtimer_proc_continue(), lockstat_nsecs(), microtime(), microuptime(), nanotime(), nanouptime(), pps_event(), sysclock_getsnapshot(), sysclock_snap2bintime(), sysctl_boottrace(), sysctl_log(), tc_setclock(), tc_windup(), umtx_abs_timeout_getsbt(), unp_internalize(), uuid_time(), vmem_clip(), vmem_destroy1(), vmem_fit(), vmem_rehash(), vmem_try_release(), vmem_xalloc(), vmem_xalloc_nextfit(), and vmem_xfree().

dotrace_debugging

bool dotrace_debugging

static

Definition at line 95 of file kern_boottrace.c.

dotrace_kernel

bool dotrace_kernel = true

static

Definition at line 99 of file kern_boottrace.c.

Referenced by boottrace().

dotrace_user

bool dotrace_user = true

static

Definition at line 103 of file kern_boottrace.c.

Referenced by _boottrace_sysctl().

rt

struct bt_table rt

static

Definition at line 83 of file kern_boottrace.c.

Referenced by boottrace(), boottrace_dump_console(), boottrace_init(), boottrace_resize(), runtrace(), sysctl_boottrace(), sysctl_log(), and sysctl_runtrace().

shutdown

bool shutdown

static

Definition at line 92 of file kern_boottrace.c.

Referenced by boottrace(), boottrace_dump_console(), and sysctl_shuttrace().

shutdown_trace

bool shutdown_trace = false

Definition at line 147 of file kern_boottrace.c.

Referenced by kern_reboot().

shutdown_trace_threshold

int shutdown_trace_threshold

static

Definition at line 156 of file kern_boottrace.c.

Referenced by boottrace_dump_console().

st

struct bt_table st

static

Definition at line 86 of file kern_boottrace.c.

Referenced by acct_process(), boottrace(), boottrace_dump_console(), boottrace_init(), calcru1(), eventfd_stat(), kdb_backtrace(), kdb_backtrace_thread(), kqueue_stat(), mqf_stat(), stack_create(), stack_destroy(), stack_print(), stack_print_ddb(), stack_print_short(), stack_put(), stack_sbuf_print(), stack_sbuf_print_flags(), stack_zero(), sysctl_kern_callout_stat(), sysctl_shuttrace(), and witness_debugger().