void
ktrace_disable(enum ktrace_state state_to_match)
{
if (ktrace_state == state_to_match) {
kernel_debug_disable();
kperf_sampling_disable();
}
}
void
kperf_reset(void)
{
lck_mtx_assert(ktrace_lock, LCK_MTX_ASSERT_OWNED);
/* turn off sampling first */
(void)kperf_sampling_disable();
/* cleanup miscellaneous configuration first */
(void)kperf_kdbg_cswitch_set(0);
(void)kperf_set_lightweight_pet(0);
kperf_kdebug_reset();
/* timers, which require actions, first */
kperf_timer_reset();
kperf_action_reset();
}
static int
sysctl_sampling( struct sysctl_oid *oidp, struct sysctl_req *req )
{
int error = 0;
uint32_t value = 0;
/* get the old value and process it */
value = kperf_sampling_status();
/* copy out the old value, get the new value */
error = sysctl_handle_int(oidp, &value, 0, req);
if (error || !req->newptr)
return (error);
/* if that worked, and we're writing... */
if( value )
error = kperf_sampling_enable();
else
error = kperf_sampling_disable();
return error;
}
