Esempio n. 1
0
static void
ktrace_set_owning_proc(proc_t p)
{
	lck_mtx_assert(ktrace_lock, LCK_MTX_ASSERT_OWNED);
	assert(p);

	if (ktrace_state != KTRACE_STATE_FG) {
		if (proc_uniqueid(p) == ktrace_bg_unique_id) {
			ktrace_state = KTRACE_STATE_BG;
		} else {
			if (ktrace_state == KTRACE_STATE_BG) {
				if (ktrace_active_mask & KTRACE_KPERF) {
					kperf_reset();
				}
				if (ktrace_active_mask & KTRACE_KDEBUG) {
					kdebug_reset();
				}

				ktrace_active_mask = 0;
			}
			ktrace_state = KTRACE_STATE_FG;
			should_notify_on_init = FALSE;
		}
	}

	ktrace_owning_unique_id = proc_uniqueid(p);
	ktrace_owning_pid = proc_pid(p);
	strlcpy(ktrace_last_owner_execname, proc_name_address(p),
		sizeof(ktrace_last_owner_execname));
}
Esempio n. 2
0
void
ktrace_kernel_configure(uint32_t config_mask)
{
	lck_mtx_assert(ktrace_lock, LCK_MTX_ASSERT_OWNED);

	if (ktrace_state != KTRACE_STATE_OFF) {
		if (ktrace_active_mask & KTRACE_KPERF) {
			kperf_reset();
		}
		if (ktrace_active_mask & KTRACE_KDEBUG) {
			kdebug_reset();
		}
	}

	ktrace_active_mask = config_mask;
	ktrace_state = KTRACE_STATE_FG;

	ktrace_release_ownership();
	strlcpy(ktrace_last_owner_execname, "kernel_task",
		sizeof(ktrace_last_owner_execname));
}
Esempio n. 3
0
void
ktrace_reset(uint32_t reset_mask)
{
	lck_mtx_assert(ktrace_lock, LCK_MTX_ASSERT_OWNED);
	assert(reset_mask != 0);

	if (ktrace_active_mask == 0) {
		if (!ktrace_keep_ownership_on_reset) {
			assert(ktrace_state == KTRACE_STATE_OFF);
		}
		return;
	}

	if (!ktrace_keep_ownership_on_reset) {
		ktrace_active_mask &= ~reset_mask;
	}

	if (reset_mask & KTRACE_KPERF) {
		kperf_reset();
	}
	if (reset_mask & KTRACE_KDEBUG) {
		kdebug_reset();
	}

	if (ktrace_active_mask == 0) {
		if (ktrace_state == KTRACE_STATE_FG) {
			/* transition from foreground to background */
			ktrace_promote_background();
		} else if (ktrace_state == KTRACE_STATE_BG) {
			/* background tool is resetting ktrace */
			should_notify_on_init = TRUE;
			ktrace_release_ownership();
			ktrace_state = KTRACE_STATE_OFF;
		}
	}
}
Esempio n. 4
0
static void
reset_ktrace(void)
{
	kperf_reset();
}