13.20.10.75

Documentation/sysctl/kernel.txt

@@ -57,8 +57,10 @@ show up in /proc/sys/kernel:
 - overflowuid
 - panic
 - panic_on_oops
-- panic_on_unrecovered_nmi
 - panic_on_stackoverflow
+- panic_on_unrecovered_nmi
+- perf_cpu_time_max_percent
+- perf_event_paranoid
 - pid_max
 - powersave-nap               [ PPC only ]
 - printk
@@ -566,19 +568,6 @@ the recommended setting is 60.
 
 ==============================================================
 
-panic_on_unrecovered_nmi:
-
-The default Linux behaviour on an NMI of either memory or unknown is
-to continue operation. For many environments such as scientific
-computing it is preferable that the box is taken out and the error
-dealt with than an uncorrected parity/ECC error get propagated.
-
-A small number of systems do generate NMI's for bizarre random reasons
-such as power management so the default is off. That sysctl works like
-the existing panic controls already in that directory.
-
-==============================================================
-
 panic_on_oops:
 
 Controls the kernel's behaviour when an oops or BUG is encountered.
@@ -602,6 +591,19 @@ This file shows up if CONFIG_DEBUG_STACKOVERFLOW is enabled.
 
 ==============================================================
 
+panic_on_unrecovered_nmi:
+
+The default Linux behaviour on an NMI of either memory or unknown is
+to continue operation. For many environments such as scientific
+computing it is preferable that the box is taken out and the error
+dealt with than an uncorrected parity/ECC error get propagated.
+
+A small number of systems do generate NMI's for bizarre random reasons
+such as power management so the default is off. That sysctl works like
+the existing panic controls already in that directory.
+
+==============================================================
+
 perf_cpu_time_max_percent:
 
 Hints to the kernel how much CPU time it should be allowed to
@@ -628,6 +630,17 @@ allowed to execute.
 
 ==============================================================
 
+perf_event_paranoid:
+
+Controls use of the performance events system by unprivileged
+users (without CAP_SYS_ADMIN).  The default value is 1.
+
+ -1: Allow use of (almost) all events by all users
+>=0: Disallow raw tracepoint access by users without CAP_IOC_LOCK
+>=1: Disallow CPU event access by users without CAP_SYS_ADMIN
+>=2: Disallow kernel profiling by users without CAP_SYS_ADMIN
+
+==============================================================
 
 pid_max:
 

arch/arm64/configs/ze552kl-perf_defconfig

@@ -618,6 +618,7 @@ CONFIG_DEBUG_SET_MODULE_RONX=y
 CONFIG_DEBUG_RODATA=y
 CONFIG_SECURITY=y
 CONFIG_SECURITY_NETWORK=y
+CONFIG_SECURITY_PERF_EVENTS_RESTRICT=y
 CONFIG_LSM_MMAP_MIN_ADDR=4096
 CONFIG_SECURITY_SELINUX=y
 CONFIG_CRYPTO_NULL=y

drivers/platform/msm/qpnp-power-on.c

@@ -933,6 +933,32 @@ void set_vib_enable(int value)
 	printk("ASDF: set vibrator enable. (%s ms)\n", timeout_ms);
 }
 
+
+void pwk_counting(void)
+{
+        struct file *fp = NULL;
+        mm_segment_t oldfs;
+        char value[20];
+        loff_t pos = 0;
+
+        fp = filp_open("/asdf/pwk_count", O_RDWR|O_CREAT, 0664);
+        if(IS_ERR_OR_NULL(fp)) return;
+
+        oldfs = get_fs();
+        set_fs(KERNEL_DS);
+
+        if(vfs_read(fp, value, strlen(value), &pos) >= 0) {
+		sprintf(value,"%ld",simple_strtol(value,NULL,10)+1);
+		pos = 0;
+		vfs_write(fp, value, strlen(value), &pos);
+        }
+
+        set_fs(oldfs);
+        vfs_fsync(fp,0);
+        filp_close(fp,NULL);
+}
+
+
 #define TIMEOUT_COUNT 55
 static struct work_struct __wait_for_power_key_6s_work;
 static unsigned long press_time;
@@ -964,6 +990,9 @@ void wait_for_power_key_6s_work(struct work_struct *work)
 		if (((i == TIMEOUT_COUNT) || (slow_ok == 1) ||
 				time_after_eq(jiffies, timeout)) &&
 				(is_holding_power_key()) && (i > 0)) {
+
+			pwk_counting();
+
 			duration = (jiffies - startime)*10/HZ;
 			ASUSEvtlog("ASDF: reset device after power press %d.%d sec (%d)\n",
 					duration/10, duration%10, i);
@@ -978,7 +1007,9 @@ void wait_for_power_key_6s_work(struct work_struct *work)
 			printk(KERN_CRIT "asus_global.ramdump_enable_magic = 0x%x\n",
 					asus_global.ramdump_enable_magic);
 			printk("force reset device!!\n");
+
 			kernel_restart(NULL);
+
 		}
 
 		power_key_6s_running = 0;

drivers/sensors/rgb_sensor/cm3323e.c

@@ -323,8 +323,12 @@ static void rgbSensor_setDelay(void)
 
 void rgbSensor_workAround(void)
 {
-	_cm3323e_I2C_Write_Word(CM3323E_ADDR, CM3323E_RESERVE, 0);
-	RGB_DBG("%s: done\n", __func__);
+	if (cm_lp_info) {
+		_cm3323e_I2C_Write_Word(CM3323E_ADDR, CM3323E_RESERVE, 0);
+		RGB_DBG("%s: done\n", __func__);
+	} else{
+		RGB_DBG_E("%s: rgb sensor isn't registered\n", __func__);
+	}
 }
 
 static int rgbSensor_doEnable(bool enabled)
@@ -1390,6 +1394,7 @@ static int cm3323e_probe(struct i2c_client *client,
 err_rgbSensor_setup:
 	mutex_destroy(&als_enable_mutex);
 	kfree(lpi);
+	cm_lp_info = NULL;
 	return ret;
 }