cpufreq: interactive: reduce timer with screen off by franciscofranco

arch/arm64/configs/lineageos_z2_plus_defconfig

@@ -603,10 +603,12 @@ CONFIG_TMPFS=y
 CONFIG_TMPFS_POSIX_ACL=y
 CONFIG_SDCARD_FS=y
 CONFIG_F2FS_FS=y
-# CONFIG_F2FS_STAT_FS is not set
-# CONFIG_F2FS_FS_POSIX_ACL is not set
+CONFIG_F2FS_STAT_FS=y
+CONFIG_F2FS_FS_XATTR=y
+CONFIG_F2FS_FS_POSIX_ACL=y
 CONFIG_F2FS_FS_SECURITY=y
-CONFIG_F2FS_FS_ENCRYPTION=y
+# CONFIG_F2FS_CHECK_FS is not set
+CONFIG_FS_POSIX_ACL=y
 CONFIG_ECRYPT_FS=y
 CONFIG_ECRYPT_FS_MESSAGING=y
 CONFIG_NLS_CODEPAGE_437=y

drivers/cpufreq/cpufreq_interactive.c

@@ -31,6 +31,7 @@
 #include <linux/workqueue.h>
 #include <linux/kthread.h>
 #include <linux/slab.h>
+#include <linux/display_state.h>
 
 #define CREATE_TRACE_POINTS
 #include <trace/events/cpufreq_interactive.h>
@@ -88,6 +89,7 @@ static cpumask_t controlled_cpus;
 static unsigned int default_target_loads[] = {DEFAULT_TARGET_LOAD};
 
 #define DEFAULT_TIMER_RATE (20 * USEC_PER_MSEC)
+#define SCREEN_OFF_TIMER_RATE ((unsigned long) (60 * USEC_PER_MSEC))
 #define DEFAULT_ABOVE_HISPEED_DELAY DEFAULT_TIMER_RATE
 static unsigned int default_above_hispeed_delay[] = {
 	DEFAULT_ABOVE_HISPEED_DELAY };
@@ -113,6 +115,7 @@ struct cpufreq_interactive_tunables {
 	 * The sample rate of the timer used to increase frequency
 	 */
 	unsigned long timer_rate;
+	unsigned long prev_timer_rate;
 	/*
 	 * Wait this long before raising speed above hispeed, by default a
 	 * single timer interval.
@@ -479,6 +482,7 @@ static void cpufreq_interactive_timer(unsigned long data)
 	bool skip_hispeed_logic, skip_min_sample_time;
 	bool jump_to_max_no_ts = false;
 	bool jump_to_max = false;
+	bool display_on = is_display_on();
 
 	if (!down_read_trylock(&ppol->enable_sem))
 		return;
@@ -497,6 +501,17 @@ static void cpufreq_interactive_timer(unsigned long data)
 	now = ktime_to_us(ktime_get());
 	ppol->last_evaluated_jiffy = get_jiffies_64();
 
+	if (display_on
+		&& tunables->timer_rate != tunables->prev_timer_rate)
+		tunables->timer_rate = tunables->prev_timer_rate;
+	else if (!display_on
+		&& tunables->timer_rate != SCREEN_OFF_TIMER_RATE) {
+		tunables->prev_timer_rate = tunables->timer_rate;
+		tunables->timer_rate
+			= max(tunables->timer_rate,
+				SCREEN_OFF_TIMER_RATE);
+	}
+
 	if (tunables->use_sched_load)
 		sched_get_cpus_busy(sl, ppol->policy->cpus);
 	max_cpu = cpumask_first(ppol->policy->cpus);
@@ -1115,6 +1130,7 @@ static ssize_t store_timer_rate(struct cpufreq_interactive_tunables *tunables,
 		pr_warn("timer_rate not aligned to jiffy. Rounded up to %lu\n",
 			val_round);
 	tunables->timer_rate = val_round;
+	tunables->prev_timer_rate = val_round;
 
 	if (!tunables->use_sched_load)
 		return count;
@@ -1123,8 +1139,10 @@ static ssize_t store_timer_rate(struct cpufreq_interactive_tunables *tunables,
 		if (!per_cpu(polinfo, cpu))
 			continue;
 		t = per_cpu(polinfo, cpu)->cached_tunables;
-		if (t && t->use_sched_load)
+		if (t && t->use_sched_load) {
 			t->timer_rate = val_round;
+			t->prev_timer_rate = val_round;
+		}
 	}
 	set_window_helper(tunables);
 
@@ -1570,6 +1588,7 @@ static struct cpufreq_interactive_tunables *alloc_tunable(
 	tunables->ntarget_loads = ARRAY_SIZE(default_target_loads);
 	tunables->min_sample_time = DEFAULT_MIN_SAMPLE_TIME;
 	tunables->timer_rate = DEFAULT_TIMER_RATE;
+	tunables->prev_timer_rate = DEFAULT_TIMER_RATE;
 	tunables->boostpulse_duration_val = DEFAULT_MIN_SAMPLE_TIME;
 	tunables->timer_slack_val = DEFAULT_TIMER_SLACK;
 

drivers/media/platform/msm/vidc/msm_v4l2_vidc.c

@@ -20,6 +20,7 @@
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
+#include <linux/pm_qos.h>
 #include <linux/types.h>
 #include <linux/version.h>
 #include <linux/io.h>
@@ -34,6 +35,7 @@
 
 #define BASE_DEVICE_NUMBER 32
 
+static struct pm_qos_request msm_v4l2_vidc_pm_qos_request;
 struct msm_vidc_drv *vidc_driver;
 
 uint32_t msm_vidc_pwr_collapse_delay = 2000;
@@ -60,6 +62,11 @@ static int msm_v4l2_open(struct file *filp)
 		core->id, vid_dev->type);
 		return -ENOMEM;
 	}
+
+		dprintk(VIDC_DBG, "pm_qos_add with latency 1000usec\n");
+	        pm_qos_add_request(&msm_v4l2_vidc_pm_qos_request,
+				PM_QOS_CPU_DMA_LATENCY, 1000);
+
 	clear_bit(V4L2_FL_USES_V4L2_FH, &vdev->flags);
 	filp->private_data = &(vidc_inst->event_handler);
 	trace_msm_v4l2_vidc_open_end("msm_v4l2_open end");
@@ -80,6 +87,12 @@ static int msm_v4l2_close(struct file *filp)
 			"Failed in %s for release output buffers\n", __func__);
 
 	rc = msm_vidc_close(vidc_inst);
+
+	dprintk(VIDC_DBG, "pm_qos_update and remove\n");
+	pm_qos_update_request(&msm_v4l2_vidc_pm_qos_request,
+			PM_QOS_DEFAULT_VALUE);
+	pm_qos_remove_request(&msm_v4l2_vidc_pm_qos_request);
+
 	trace_msm_v4l2_vidc_close_end("msm_v4l2_close end");
 	return rc;
 }

mm/vmscan.c

@@ -144,7 +144,7 @@ struct scan_control {
 /*
  * From 0 .. 100.  Higher means more swappy.
  */
-int vm_swappiness = 60;
+int vm_swappiness = 0;
 /*
  * The total number of pages which are beyond the high watermark within all
  * zones.