From 244b2c5ca8b14627e4a17755e5922221e121c771 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 09 Oct 2024 06:15:07 +0000
Subject: [PATCH] change system file
---
kernel/drivers/cpuidle/governor.c | 27 +++++++++++++++++++--------
1 files changed, 19 insertions(+), 8 deletions(-)
diff --git a/kernel/drivers/cpuidle/governor.c b/kernel/drivers/cpuidle/governor.c
index e3321b9..0e51ed2 100644
--- a/kernel/drivers/cpuidle/governor.c
+++ b/kernel/drivers/cpuidle/governor.c
@@ -11,20 +11,24 @@
#include <linux/cpu.h>
#include <linux/cpuidle.h>
#include <linux/mutex.h>
+#include <linux/module.h>
#include <linux/pm_qos.h>
#include "cpuidle.h"
+char param_governor[CPUIDLE_NAME_LEN];
+
LIST_HEAD(cpuidle_governors);
struct cpuidle_governor *cpuidle_curr_governor;
+struct cpuidle_governor *cpuidle_prev_governor;
/**
- * __cpuidle_find_governor - finds a governor of the specified name
+ * cpuidle_find_governor - finds a governor of the specified name
* @str: the name
*
* Must be called with cpuidle_lock acquired.
*/
-static struct cpuidle_governor * __cpuidle_find_governor(const char *str)
+struct cpuidle_governor *cpuidle_find_governor(const char *str)
{
struct cpuidle_governor *gov;
@@ -84,11 +88,14 @@
return -ENODEV;
mutex_lock(&cpuidle_lock);
- if (__cpuidle_find_governor(gov->name) == NULL) {
+ if (cpuidle_find_governor(gov->name) == NULL) {
ret = 0;
list_add_tail(&gov->governor_list, &cpuidle_governors);
if (!cpuidle_curr_governor ||
- cpuidle_curr_governor->rating < gov->rating)
+ !strncasecmp(param_governor, gov->name, CPUIDLE_NAME_LEN) ||
+ (cpuidle_curr_governor->rating < gov->rating &&
+ strncasecmp(param_governor, cpuidle_curr_governor->name,
+ CPUIDLE_NAME_LEN)))
cpuidle_switch_governor(gov);
}
mutex_unlock(&cpuidle_lock);
@@ -101,11 +108,15 @@
* cpuidle_governor_latency_req - Compute a latency constraint for CPU
* @cpu: Target CPU
*/
-int cpuidle_governor_latency_req(unsigned int cpu)
+s64 cpuidle_governor_latency_req(unsigned int cpu)
{
- int global_req = pm_qos_request(PM_QOS_CPU_DMA_LATENCY);
struct device *device = get_cpu_device(cpu);
- int device_req = dev_pm_qos_raw_read_value(device);
+ int device_req = dev_pm_qos_raw_resume_latency(device);
+ int global_req = cpu_latency_qos_limit();
- return device_req < global_req ? device_req : global_req;
+ if (device_req > global_req)
+ device_req = global_req;
+
+ return (s64)device_req * NSEC_PER_USEC;
}
+EXPORT_SYMBOL_GPL(cpuidle_governor_latency_req);
--
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