mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-05 10:29:37 +00:00
76ee455713
CC arch/arm/mach-exynos/cpuidle.o arch/arm/mach-exynos/cpuidle.c:36: error: 'THIS_MODULE' undeclared here (not in a function) arch/arm/mach-exynos/cpuidle.c: In function 'exynos4_enter_idle': arch/arm/mach-exynos/cpuidle.c:42: error: storage size of 'before' isn't known arch/arm/mach-exynos/cpuidle.c:42: error: storage size of 'after' isn't known arch/arm/mach-exynos/cpuidle.c:46: error: implicit declaration of function 'do_gettimeofday' arch/arm/mach-exynos/cpuidle.c:52: error: 'USEC_PER_SEC' undeclared (first use in this function) arch/arm/mach-exynos/cpuidle.c:52: error: (Each undeclared identifier is reported only once arch/arm/mach-exynos/cpuidle.c:52: error: for each function it appears in.) arch/arm/mach-exynos/cpuidle.c:42: warning: unused variable 'after' arch/arm/mach-exynos/cpuidle.c:42: warning: unused variable 'before' make[1]: *** [arch/arm/mach-exynos/cpuidle.o] Error 1 Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> [kgene.kim@samsung.com: Fixed as per Stephen's suggestion] Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
/* linux/arch/arm/mach-exynos4/cpuidle.c
|
|
*
|
|
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
|
|
* http://www.samsung.com
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/cpuidle.h>
|
|
#include <linux/io.h>
|
|
#include <linux/export.h>
|
|
#include <linux/time.h>
|
|
|
|
#include <asm/proc-fns.h>
|
|
|
|
static int exynos4_enter_idle(struct cpuidle_device *dev,
|
|
struct cpuidle_driver *drv,
|
|
int index);
|
|
|
|
static struct cpuidle_state exynos4_cpuidle_set[] = {
|
|
[0] = {
|
|
.enter = exynos4_enter_idle,
|
|
.exit_latency = 1,
|
|
.target_residency = 100000,
|
|
.flags = CPUIDLE_FLAG_TIME_VALID,
|
|
.name = "IDLE",
|
|
.desc = "ARM clock gating(WFI)",
|
|
},
|
|
};
|
|
|
|
static DEFINE_PER_CPU(struct cpuidle_device, exynos4_cpuidle_device);
|
|
|
|
static struct cpuidle_driver exynos4_idle_driver = {
|
|
.name = "exynos4_idle",
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static int exynos4_enter_idle(struct cpuidle_device *dev,
|
|
struct cpuidle_driver *drv,
|
|
int index)
|
|
{
|
|
struct timeval before, after;
|
|
int idle_time;
|
|
|
|
local_irq_disable();
|
|
do_gettimeofday(&before);
|
|
|
|
cpu_do_idle();
|
|
|
|
do_gettimeofday(&after);
|
|
local_irq_enable();
|
|
idle_time = (after.tv_sec - before.tv_sec) * USEC_PER_SEC +
|
|
(after.tv_usec - before.tv_usec);
|
|
|
|
dev->last_residency = idle_time;
|
|
return index;
|
|
}
|
|
|
|
static int __init exynos4_init_cpuidle(void)
|
|
{
|
|
int i, max_cpuidle_state, cpu_id;
|
|
struct cpuidle_device *device;
|
|
struct cpuidle_driver *drv = &exynos4_idle_driver;
|
|
|
|
/* Setup cpuidle driver */
|
|
drv->state_count = (sizeof(exynos4_cpuidle_set) /
|
|
sizeof(struct cpuidle_state));
|
|
max_cpuidle_state = drv->state_count;
|
|
for (i = 0; i < max_cpuidle_state; i++) {
|
|
memcpy(&drv->states[i], &exynos4_cpuidle_set[i],
|
|
sizeof(struct cpuidle_state));
|
|
}
|
|
cpuidle_register_driver(&exynos4_idle_driver);
|
|
|
|
for_each_cpu(cpu_id, cpu_online_mask) {
|
|
device = &per_cpu(exynos4_cpuidle_device, cpu_id);
|
|
device->cpu = cpu_id;
|
|
|
|
device->state_count = drv->state_count;
|
|
|
|
if (cpuidle_register_device(device)) {
|
|
printk(KERN_ERR "CPUidle register device failed\n,");
|
|
return -EIO;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
device_initcall(exynos4_init_cpuidle);
|