waterDataStatistics connectTheSignalSlot.c 吉超博 commit at 2020-09-21

waterDataStatistics/monitoringDataProcessing/connectTheSignalSlot.c

@@ -145,3 +145,89 @@ static int _omap_device_activate(struct omap_device *od, u8 ignore_lat)
 		/* XXX check return code */
 		odpl->activate_func(od);
 
+		read_persistent_clock(&b);
+
+		c = timespec_sub(b, a);
+		act_lat = timespec_to_ns(&c);
+
+		dev_dbg(&od->pdev->dev,
+			"omap_device: pm_lat %d: activate: elapsed time %llu nsec\n",
+			od->pm_lat_level, act_lat);
+
+		if (act_lat > odpl->activate_lat) {
+			odpl->activate_lat_worst = act_lat;
+			if (odpl->flags & OMAP_DEVICE_LATENCY_AUTO_ADJUST) {
+				odpl->activate_lat = act_lat;
+				dev_dbg(&od->pdev->dev,
+					"new worst case activate latency %d: %llu\n",
+					od->pm_lat_level, act_lat);
+			} else
+				dev_warn(&od->pdev->dev,
+					 "activate latency %d higher than expected. (%llu > %d)\n",
+					 od->pm_lat_level, act_lat,
+					 odpl->activate_lat);
+		}
+
+		od->dev_wakeup_lat -= odpl->activate_lat;
+	}
+
+	return 0;
+}
+
+/**
+ * _omap_device_deactivate - decrease device readiness
+ * @od: struct omap_device *
+ * @ignore_lat: decrease to latency target (0) or full inactivity (1)?
+ *
+ * Decrease readiness of omap_device @od (thus increasing device
+ * wakeup latency, but conserving power).  If @ignore_lat is
+ * IGNORE_WAKEUP_LAT, make the omap_device fully inactive.  Otherwise,
+ * if @ignore_lat is USE_WAKEUP_LAT, and the device's maximum wakeup
+ * latency is less than the requested maximum wakeup latency, step
+ * forwards in the omap_device_pm_latency table to ensure the device's
+ * maximum wakeup latency is less than or equal to the requested
+ * maximum wakeup latency.  Returns 0.
+ */
+static int _omap_device_deactivate(struct omap_device *od, u8 ignore_lat)
+{
+	struct timespec a, b, c;
+
+	dev_dbg(&od->pdev->dev, "omap_device: deactivating\n");
+
+	while (od->pm_lat_level < od->pm_lats_cnt) {
+		struct omap_device_pm_latency *odpl;
+		unsigned long long deact_lat = 0;
+
+		odpl = od->pm_lats + od->pm_lat_level;
+
+		if (!ignore_lat &&
+		    ((od->dev_wakeup_lat + odpl->activate_lat) >
+		     od->_dev_wakeup_lat_limit))
+			break;
+
+		read_persistent_clock(&a);
+
+		/* XXX check return code */
+		odpl->deactivate_func(od);
+
+		read_persistent_clock(&b);
+
+		c = timespec_sub(b, a);
+		deact_lat = timespec_to_ns(&c);
+
+		dev_dbg(&od->pdev->dev,
+			"omap_device: pm_lat %d: deactivate: elapsed time %llu nsec\n",
+			od->pm_lat_level, deact_lat);
+
+		if (deact_lat > odpl->deactivate_lat) {
+			odpl->deactivate_lat_worst = deact_lat;
+			if (odpl->flags & OMAP_DEVICE_LATENCY_AUTO_ADJUST) {
+				odpl->deactivate_lat = deact_lat;
+				dev_dbg(&od->pdev->dev,
+					"new worst case deactivate latency %d: %llu\n",
+					od->pm_lat_level, deact_lat);
+			} else
+				dev_warn(&od->pdev->dev,
+					 "deactivate latency %d higher than expected. (%llu > %d)\n",
+					 od->pm_lat_level, deact_lat,
+					 odpl->deactivate_lat);