Pin irq thread of em718x to CPU1
CPU1 tends to have less load than CPU0 and we would like to prevent this
thread from preempting other threads as much as possible.
Issue: KIONE-3413
Change-Id: I415ee85b6451a8abd72583cbb2f202af2407864e
diff --git a/drivers/input/misc/em718x.c b/drivers/input/misc/em718x.c
index b30f146..754f8a5 100644
--- a/drivers/input/misc/em718x.c
+++ b/drivers/input/misc/em718x.c
@@ -13,6 +13,7 @@
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
+#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/ktime.h>
#include <linux/miscdevice.h>
@@ -1659,6 +1660,8 @@
struct hub_all_data data;
bool one_read;
+ set_cpus_allowed_ptr(current, cpumask_of(1));
+
mutex_lock(&em718x->lock);
em718x->irq_time = ktime_to_ns(ktime_get_boottime());
@@ -2272,6 +2275,7 @@
int rc;
struct em718x *em718x;
struct device *dev = &client->dev;
+ struct irq_desc *desc;
int i;
rc = i2c_check_functionality(client->adapter, I2C_FUNC_I2C);
@@ -2385,6 +2389,10 @@
em718x->irq);
goto exit_misc;
}
+
+ desc = irq_to_desc(em718x->irq);
+ set_cpus_allowed_ptr(desc->action->thread, cpumask_of(1));
+
device_init_wakeup(dev, 1);
dev_info(dev, "init finished with no errors, make reset to load FW\n");
