Differential D35380 Diff 106540 sys/cddl/dev/profile/profile.c

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sys/cddl/dev/profile/profile.c

Show First 20 Lines • Show All 149 Lines • ▼ Show 20 Lines	typedef struct profile_probe_percpu {
hrtime_t profc_expected;		hrtime_t profc_expected;
hrtime_t profc_interval;		hrtime_t profc_interval;
profile_probe_t *profc_probe;		profile_probe_t *profc_probe;
#ifdef __FreeBSD__		#ifdef __FreeBSD__
struct callout profc_cyclic;		struct callout profc_cyclic;
#endif		#endif
} profile_probe_percpu_t;		} profile_probe_percpu_t;

static d_open_t profile_open;
static int profile_unload(void);		static int profile_unload(void);
static void profile_create(hrtime_t, char *, int);		static void profile_create(hrtime_t, char *, int);
static void profile_destroy(void , dtrace_id_t, void );		static void profile_destroy(void , dtrace_id_t, void );
static void profile_enable(void , dtrace_id_t, void );		static void profile_enable(void , dtrace_id_t, void );
static void profile_disable(void , dtrace_id_t, void );		static void profile_disable(void , dtrace_id_t, void );
static void profile_load(void *);		static void profile_load(void *);
static void profile_provide(void , dtrace_probedesc_t );		static void profile_provide(void , dtrace_probedesc_t );

Show All 17 Lines
* this gets its value from PROFILE_MAX_DEFAULT or profile-max-probes if it's		* this gets its value from PROFILE_MAX_DEFAULT or profile-max-probes if it's
* present in the profile.conf file.		* present in the profile.conf file.
*/		*/
#define PROFILE_MAX_DEFAULT 1000 /* default max. number of probes */		#define PROFILE_MAX_DEFAULT 1000 /* default max. number of probes */
static uint32_t profile_max = PROFILE_MAX_DEFAULT;		static uint32_t profile_max = PROFILE_MAX_DEFAULT;
/* maximum number of profile probes */		/* maximum number of profile probes */
static uint32_t profile_total; /* current number of profile probes */		static uint32_t profile_total; /* current number of profile probes */

static struct cdevsw profile_cdevsw = {
.d_version = D_VERSION,
.d_open = profile_open,
.d_name = "profile",
};

static dtrace_pattr_t profile_attr = {		static dtrace_pattr_t profile_attr = {
{ DTRACE_STABILITY_EVOLVING, DTRACE_STABILITY_EVOLVING, DTRACE_CLASS_COMMON },		{ DTRACE_STABILITY_EVOLVING, DTRACE_STABILITY_EVOLVING, DTRACE_CLASS_COMMON },
{ DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_UNKNOWN },		{ DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_UNKNOWN },
{ DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_ISA },		{ DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_ISA },
{ DTRACE_STABILITY_EVOLVING, DTRACE_STABILITY_EVOLVING, DTRACE_CLASS_COMMON },		{ DTRACE_STABILITY_EVOLVING, DTRACE_STABILITY_EVOLVING, DTRACE_CLASS_COMMON },
{ DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_ISA },		{ DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_ISA },
};		};

static dtrace_pops_t profile_pops = {		static dtrace_pops_t profile_pops = {
.dtps_provide = profile_provide,		.dtps_provide = profile_provide,
.dtps_provide_module = NULL,		.dtps_provide_module = NULL,
.dtps_enable = profile_enable,		.dtps_enable = profile_enable,
.dtps_disable = profile_disable,		.dtps_disable = profile_disable,
.dtps_suspend = NULL,		.dtps_suspend = NULL,
.dtps_resume = NULL,		.dtps_resume = NULL,
.dtps_getargdesc = NULL,		.dtps_getargdesc = NULL,
.dtps_getargval = NULL,		.dtps_getargval = NULL,
.dtps_usermode = NULL,		.dtps_usermode = NULL,
.dtps_destroy = profile_destroy		.dtps_destroy = profile_destroy
};		};

static struct cdev *profile_cdev;
static dtrace_provider_id_t profile_id;		static dtrace_provider_id_t profile_id;
static hrtime_t profile_interval_min = NANOSEC / 5000; /* 5000 hz */		static hrtime_t profile_interval_min = NANOSEC / 5000; /* 5000 hz */
static int profile_aframes = PROF_ARTIFICIAL_FRAMES;		static int profile_aframes = PROF_ARTIFICIAL_FRAMES;

SYSCTL_DECL(_kern_dtrace);		SYSCTL_DECL(_kern_dtrace);
SYSCTL_NODE(_kern_dtrace, OID_AUTO, profile, CTLFLAG_RD \| CTLFLAG_MPSAFE, 0,		SYSCTL_NODE(_kern_dtrace, OID_AUTO, profile, CTLFLAG_RD \| CTLFLAG_MPSAFE, 0,
"DTrace profile parameters");		"DTrace profile parameters");
SYSCTL_INT(_kern_dtrace_profile, OID_AUTO, aframes, CTLFLAG_RW, &profile_aframes,		SYSCTL_INT(_kern_dtrace_profile, OID_AUTO, aframes, CTLFLAG_RW, &profile_aframes,
▲ Show 20 Lines • Show All 405 Lines • ▼ Show 20 Lines	if (prof->prof_kind == PROF_TICK) {
profile_disable_omni(prof);		profile_disable_omni(prof);
}		}
}		}
#endif		#endif

static void		static void
profile_load(void *dummy)		profile_load(void *dummy)
{		{
/* Create the /dev/dtrace/profile entry. */
profile_cdev = make_dev(&profile_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600,
"dtrace/profile");

if (dtrace_register("profile", &profile_attr, DTRACE_PRIV_USER,		if (dtrace_register("profile", &profile_attr, DTRACE_PRIV_USER,
NULL, &profile_pops, NULL, &profile_id) != 0)		NULL, &profile_pops, NULL, &profile_id) != 0)
return;		return;
}		}


static int		static int
profile_unload()		profile_unload()
{		{
int error = 0;		int error = 0;

if ((error = dtrace_unregister(profile_id)) != 0)		if ((error = dtrace_unregister(profile_id)) != 0)
return (error);		return (error);

destroy_dev(profile_cdev);

return (error);		return (error);
}		}

/* ARGSUSED */		/* ARGSUSED */
static int		static int
profile_modevent(module_t mod __unused, int type, void *data __unused)		profile_modevent(module_t mod __unused, int type, void *data __unused)
{		{
int error = 0;		int error = 0;
Show All 9 Lines	case MOD_SHUTDOWN:
break;		break;

default:		default:
error = EOPNOTSUPP;		error = EOPNOTSUPP;
break;		break;

}		}
return (error);		return (error);
}

/* ARGSUSED */
static int
profile_open(struct cdev dev __unused, int oflags __unused, int devtype __unused, struct thread td __unused)
{
return (0);
}		}

SYSINIT(profile_load, SI_SUB_DTRACE_PROVIDER, SI_ORDER_ANY, profile_load, NULL);		SYSINIT(profile_load, SI_SUB_DTRACE_PROVIDER, SI_ORDER_ANY, profile_load, NULL);
SYSUNINIT(profile_unload, SI_SUB_DTRACE_PROVIDER, SI_ORDER_ANY, profile_unload, NULL);		SYSUNINIT(profile_unload, SI_SUB_DTRACE_PROVIDER, SI_ORDER_ANY, profile_unload, NULL);

DEV_MODULE(profile, profile_modevent, NULL);		DEV_MODULE(profile, profile_modevent, NULL);
MODULE_VERSION(profile, 1);		MODULE_VERSION(profile, 1);
MODULE_DEPEND(profile, dtrace, 1, 1, 1);		MODULE_DEPEND(profile, dtrace, 1, 1, 1);
MODULE_DEPEND(profile, opensolaris, 1, 1, 1);		MODULE_DEPEND(profile, opensolaris, 1, 1, 1);