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Commit be9e929d authored by Patrick Mochel's avatar Patrick Mochel
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Hand merge

parents ae6a0c46 3d983e57
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Showing with 793 additions and 394 deletions
arch/arm/kernel/pm.c
View file @ be9e929d
......@@ -11,7 +11,6 @@
#include <linux/config.h>
#include <linux/pm.h>
#include <linux/device.h>
#include <linux/cpufreq.h>
#include <asm/leds.h>
#include <asm/system.h>
......@@ -66,13 +65,6 @@ int suspend(void)
*/
device_resume(RESUME_POWER_ON);
/*
* Restore the CPU frequency settings.
*/
#ifdef CONFIG_CPU_FREQ
cpufreq_restore();
#endif
/*
* Resume LDM devices.
*/
......
arch/i386/kernel/apic.c
View file @ be9e929d
......@@ -25,6 +25,9 @@
#include <linux/interrupt.h>
#include <linux/mc146818rtc.h>
#include <linux/kernel_stat.h>
#include <linux/sysdev.h>
#include <linux/module.h>
#include <asm/atomic.h>
#include <asm/smp.h>
......@@ -460,9 +463,6 @@ void __init setup_local_APIC (void)
#ifdef CONFIG_PM
#include <linux/device.h>
#include <linux/module.h>
static struct {
/* 'active' is true if the local APIC was enabled by us and
not the BIOS; this signifies that we are also responsible
......@@ -484,13 +484,11 @@ static struct {
unsigned int apic_thmr;
} apic_pm_state;
static int lapic_suspend(struct device *dev, u32 state, u32 level)
static int lapic_suspend(struct sys_device *dev, u32 state)
{
unsigned int l, h;
unsigned long flags;
if (level != SUSPEND_POWER_DOWN)
return 0;
if (!apic_pm_state.active)
return 0;
......@@ -517,13 +515,11 @@ static int lapic_suspend(struct device *dev, u32 state, u32 level)
return 0;
}
static int lapic_resume(struct device *dev, u32 level)
static int lapic_resume(struct sys_device *dev)
{
unsigned int l, h;
unsigned long flags;
if (level != RESUME_POWER_ON)
return 0;
if (!apic_pm_state.active)
return 0;
......@@ -557,38 +553,37 @@ static int lapic_resume(struct device *dev, u32 level)
return 0;
}
static struct device_driver lapic_driver = {
.name = "lapic",
.bus = &system_bus_type,
static struct sysdev_class lapic_sysclass = {
set_kset_name("lapic"),
.resume = lapic_resume,
.suspend = lapic_suspend,
};
/* not static, needed by child devices */
struct sys_device device_lapic = {
.name = "lapic",
static struct sys_device device_lapic = {
.id = 0,
.dev = {
.name = "lapic",
.driver = &lapic_driver,
},
.cls = &lapic_sysclass,
};
EXPORT_SYMBOL(device_lapic);
static void __init apic_pm_activate(void)
{
apic_pm_state.active = 1;
}
static int __init init_lapic_devicefs(void)
static int __init init_lapic_sysfs(void)
{
int error;
if (!cpu_has_apic)
return 0;
/* XXX: remove suspend/resume procs if !apic_pm_state.active? */
driver_register(&lapic_driver);
return sys_device_register(&device_lapic);
error = sysdev_class_register(&lapic_sysclass);
if (!error)
error = sys_device_register(&device_lapic);
return error;
}
device_initcall(init_lapic_devicefs);
device_initcall(init_lapic_sysfs);
#else /* CONFIG_PM */
......
arch/i386/kernel/cpu/mtrr/main.c
View file @ be9e929d
......@@ -35,6 +35,7 @@
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/smp.h>
#include <linux/cpu.h>
#include <asm/mtrr.h>
......@@ -546,6 +547,58 @@ static void init_other_cpus(void)
}
}
struct mtrr_value {
mtrr_type ltype;
unsigned long lbase;
unsigned int lsize;
};
static struct mtrr_value * mtrr_state;
static int mtrr_save(struct sys_device * sysdev, u32 state)
{
int i;
int size = num_var_ranges * sizeof(struct mtrr_value);
mtrr_state = kmalloc(size,GFP_KERNEL);
if (mtrr_state)
memset(mtrr_state,0,size);
else
return -ENOMEM;
for (i = 0; i < num_var_ranges; i++) {
mtrr_if->get(i,
&mtrr_state[i].lbase,
&mtrr_state[i].lsize,
&mtrr_state[i].ltype);
}
return 0;
}
static int mtrr_restore(struct sys_device * sysdev)
{
int i;
for (i = 0; i < num_var_ranges; i++) {
if (mtrr_state[i].lsize)
set_mtrr(i,
mtrr_state[i].lbase,
mtrr_state[i].lsize,
mtrr_state[i].ltype);
}
kfree(mtrr_state);
return 0;
}
static struct sysdev_driver mtrr_sysdev_driver = {
.save = mtrr_save,
.restore = mtrr_restore,
};
/**
* mtrr_init - initialie mtrrs on the boot CPU
*
......@@ -630,8 +683,11 @@ static int __init mtrr_init(void)
set_num_var_ranges();
init_table();
init_other_cpus();
return sysdev_driver_register(&cpu_sysdev_class,
&mtrr_sysdev_driver);
}
return mtrr_if ? -ENXIO : 0;
return -ENXIO;
}
char *mtrr_strings[MTRR_NUM_TYPES] =
......@@ -645,5 +701,5 @@ char *mtrr_strings[MTRR_NUM_TYPES] =
"write-back", /* 6 */
};
core_initcall(mtrr_init);
subsys_initcall(mtrr_init);
arch/i386/kernel/i8259.c
View file @ be9e929d
......@@ -10,7 +10,7 @@
#include <linux/smp_lock.h>
#include <linux/init.h>
#include <linux/kernel_stat.h>
#include <linux/device.h>
#include <linux/sysdev.h>
#include <asm/atomic.h>
#include <asm/system.h>
......@@ -238,35 +238,31 @@ void mask_and_ack_8259A(unsigned int irq)
}
}
static int i8259A_resume(struct device *dev, u32 level)
static int i8259A_resume(struct sys_device *dev)
{
if (level == RESUME_POWER_ON)
init_8259A(0);
return 0;
}
static struct device_driver i8259A_driver = {
.name = "pic",
.bus = &system_bus_type,
static struct sysdev_class i8259_sysdev_class = {
set_kset_name("i8259"),
.resume = i8259A_resume,
};
static struct sys_device device_i8259A = {
.name = "pic",
.id = 0,
.dev = {
.name = "i8259A PIC",
.driver = &i8259A_driver,
},
.cls = &i8259_sysdev_class,
};
static int __init init_8259A_devicefs(void)
static int __init i8259A_init_sysfs(void)
{
driver_register(&i8259A_driver);
return sys_device_register(&device_i8259A);
int error = sysdev_class_register(&i8259_sysdev_class);
if (!error)
error = sys_device_register(&device_i8259A);
return error;
}
device_initcall(init_8259A_devicefs);
device_initcall(i8259A_init_sysfs);
void init_8259A(int auto_eoi)
{
......@@ -385,35 +381,31 @@ static void setup_timer(void)
spin_unlock_irqrestore(&i8253_lock, flags);
}
static int timer_resume(struct device *dev, u32 level)
static int timer_resume(struct sys_device *dev)
{
if (level == RESUME_POWER_ON)
setup_timer();
return 0;
}
static struct device_driver timer_driver = {
.name = "timer",
.bus = &system_bus_type,
static struct sysdev_class timer_sysclass = {
set_kset_name("timer"),
.resume = timer_resume,
};
static struct sys_device device_timer = {
.name = "timer",
.id = 0,
.dev = {
.name = "timer",
.driver = &timer_driver,
},
.cls = &timer_sysclass,
};
static int __init init_timer_devicefs(void)
static int __init init_timer_sysfs(void)
{
driver_register(&timer_driver);
return sys_device_register(&device_timer);
int error = sysdev_class_register(&timer_sysclass);
if (!error)
error = sys_device_register(&device_timer);
return error;
}
device_initcall(init_timer_devicefs);
device_initcall(init_timer_sysfs);
void __init init_IRQ(void)
{
......
arch/i386/kernel/nmi.c
View file @ be9e929d
......@@ -23,6 +23,7 @@
#include <linux/mc146818rtc.h>
#include <linux/kernel_stat.h>
#include <linux/module.h>
#include <linux/sysdev.h>
#include <asm/smp.h>
#include <asm/mtrr.h>
......@@ -180,53 +181,48 @@ void enable_lapic_nmi_watchdog(void)
#ifdef CONFIG_PM
#include <linux/device.h>
static int nmi_pm_active; /* nmi_active before suspend */
static int lapic_nmi_suspend(struct device *dev, u32 state, u32 level)
static int lapic_nmi_suspend(struct sys_device *dev, u32 state)
{
if (level != SUSPEND_POWER_DOWN)
return 0;
nmi_pm_active = nmi_active;
disable_lapic_nmi_watchdog();
return 0;
}
static int lapic_nmi_resume(struct device *dev, u32 level)
static int lapic_nmi_resume(struct sys_device *dev)
{
if (level != RESUME_POWER_ON)
return 0;
if (nmi_pm_active > 0)
enable_lapic_nmi_watchdog();
return 0;
}
static struct device_driver lapic_nmi_driver = {
.name = "lapic_nmi",
.bus = &system_bus_type,
static struct sysdev_class nmi_sysclass = {
set_kset_name("lapic_nmi"),
.resume = lapic_nmi_resume,
.suspend = lapic_nmi_suspend,
};
static struct sys_device device_lapic_nmi = {
.name = "lapic_nmi",
.id = 0,
.dev = {
.name = "lapic_nmi",
.driver = &lapic_nmi_driver,
.parent = &device_lapic.dev,
},
.cls = &nmi_sysclass,
};
static int __init init_lapic_nmi_devicefs(void)
static int __init init_lapic_nmi_sysfs(void)
{
int error;
if (nmi_active == 0)
return 0;
driver_register(&lapic_nmi_driver);
return sys_device_register(&device_lapic_nmi);
error = sysdev_class_register(&nmi_sysclass);
if (!error)
error = sys_device_register(&device_lapic_nmi);
return error;
}
/* must come after the local APIC's device_initcall() */
late_initcall(init_lapic_nmi_devicefs);
late_initcall(init_lapic_nmi_sysfs);
#endif /* CONFIG_PM */
......
arch/i386/kernel/time.c
View file @ be9e929d
......@@ -42,7 +42,7 @@
#include <linux/init.h>
#include <linux/smp.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/sysdev.h>
#include <linux/bcd.h>
#include <asm/io.h>
......@@ -278,18 +278,22 @@ unsigned long get_cmos_time(void)
return retval;
}
static struct sysdev_class rtc_sysclass = {
set_kset_name("rtc"),
};
/* XXX this driverfs stuff should probably go elsewhere later -john */
static struct sys_device device_i8253 = {
.name = "rtc",
.id = 0,
.dev = {
.name = "i8253 Real Time Clock",
},
.cls = &rtc_sysclass,
};
static int time_init_device(void)
{
return sys_device_register(&device_i8253);
int error = sysdev_class_register(&rtc_sysclass);
if (!error)
error = sys_device_register(&device_i8253);
return error;
}
device_initcall(time_init_device);
......
arch/i386/oprofile/nmi_int.c
View file @ be9e929d
......@@ -11,7 +11,7 @@
#include <linux/notifier.h>
#include <linux/smp.h>
#include <linux/oprofile.h>
#include <linux/device.h>
#include <linux/sysdev.h>
#include <asm/nmi.h>
#include <asm/msr.h>
#include <asm/apic.h>
......@@ -31,53 +31,48 @@ static int nmi_enabled = 0;
#ifdef CONFIG_PM
static int nmi_suspend(struct device *dev, u32 state, u32 level)
static int nmi_suspend(struct sys_device *dev, u32 state)
{
if (level != SUSPEND_POWER_DOWN)
return 0;
if (nmi_enabled == 1)
nmi_stop();
return 0;
}
static int nmi_resume(struct device *dev, u32 level)
static int nmi_resume(struct sys_device *dev)
{
if (level != RESUME_POWER_ON)
return 0;
if (nmi_enabled == 1)
nmi_start();
return 0;
}
static struct device_driver nmi_driver = {
.name = "oprofile",
.bus = &system_bus_type,
static struct sysdev_class oprofile_sysclass = {
set_kset_name("oprofile"),
.resume = nmi_resume,
.suspend = nmi_suspend,
};
static struct device device_nmi = {
.name = "oprofile",
.bus_id = "oprofile",
.driver = &nmi_driver,
.parent = &device_lapic.dev,
static struct sys_device device_oprofile = {
.id = 0,
.cls = &oprofile_sysclass,
};
static int __init init_driverfs(void)
{
driver_register(&nmi_driver);
return device_register(&device_nmi);
int error;
if (!(error = sysdev_class_register(&oprofile_sysclass)))
error = sys_device_register(&device_oprofile);
return error;
}
static void __exit exit_driverfs(void)
{
device_unregister(&device_nmi);
driver_unregister(&nmi_driver);
sys_device_unregister(&device_oprofile);
sysdev_class_unregister(&oprofile_sysclass);
}
#else
......
arch/x86_64/kernel/i8259.c
View file @ be9e929d
......@@ -11,7 +11,7 @@
#include <linux/smp_lock.h>
#include <linux/init.h>
#include <linux/kernel_stat.h>
#include <linux/device.h>
#include <linux/sysdev.h>
#include <asm/atomic.h>
#include <asm/system.h>
......@@ -413,35 +413,31 @@ static void setup_timer(void)
outb(LATCH >> 8 , 0x40); /* MSB */
}
static int timer_resume(struct device *dev, u32 level)
static int timer_resume(struct sys_device *dev)
{
if (level == RESUME_POWER_ON)
setup_timer();
return 0;
}
static struct device_driver timer_driver = {
.name = "timer",
.bus = &system_bus_type,
static struct sysdev_class timer_sysclass = {
set_kset_name("timer"),
.resume = timer_resume,
};
static struct sys_device device_timer = {
.name = "timer",
.id = 0,
.dev = {
.name = "timer",
.driver = &timer_driver,
},
.cls &timer_sysclass,
};
static int __init init_timer_devicefs(void)
static int __init init_timer_sysfs(void)
{
driver_register(&timer_driver);
return sys_device_register(&device_timer);
int error = sysdev_class_register(&timer_sysclass);
if (!error)
error = sys_device_register(&device_timer);
return error;
}
device_initcall(init_timer_devicefs);
device_initcall(init_timer_sysfs);
void __init init_IRQ(void)
{
......
drivers/base/cpu.c
View file @ be9e929d
......@@ -2,23 +2,18 @@
* drivers/base/cpu.c - basic CPU class support
*/
#include <linux/device.h>
#include <linux/sysdev.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/cpu.h>
#include <linux/topology.h>
#include <asm/topology.h>
struct class cpu_class = {
.name = "cpu",
struct sysdev_class cpu_sysdev_class = {
set_kset_name("cpu"),
};
struct device_driver cpu_driver = {
.name = "cpu",
.bus = &system_bus_type,
};
/*
* register_cpu - Setup a driverfs device for a CPU.
* @num - CPU number to use when creating the device.
......@@ -27,42 +22,15 @@ struct device_driver cpu_driver = {
*/
int __init register_cpu(struct cpu *cpu, int num, struct node *root)
{
int retval;
cpu->node_id = cpu_to_node(num);
cpu->sysdev.name = "cpu";
cpu->sysdev.id = num;
if (root)
cpu->sysdev.root = &root->sysroot;
snprintf(cpu->sysdev.dev.name, DEVICE_NAME_SIZE, "CPU %u", num);
cpu->sysdev.dev.driver = &cpu_driver;
retval = sys_device_register(&cpu->sysdev);
if (retval)
return retval;
memset(&cpu->sysdev.class_dev, 0x00, sizeof(struct class_device));
cpu->sysdev.class_dev.dev = &cpu->sysdev.dev;
cpu->sysdev.class_dev.class = &cpu_class;
snprintf(cpu->sysdev.class_dev.class_id, BUS_ID_SIZE, "cpu%d", num);
retval = class_device_register(&cpu->sysdev.class_dev);
if (retval) {
sys_device_unregister(&cpu->sysdev);
return retval;
}
return 0;
cpu->sysdev.cls = &cpu_sysdev_class;
return sys_device_register(&cpu->sysdev);
}
int __init cpu_dev_init(void)
{
int error;
error = class_register(&cpu_class);
if (error)
goto out;
error = driver_register(&cpu_driver);
if (error)
class_unregister(&cpu_class);
out:
return error;
return sysdev_class_register(&cpu_sysdev_class);
}
drivers/base/memblk.c
View file @ be9e929d
......@@ -2,7 +2,6 @@
* drivers/base/memblk.c - basic Memory Block class support
*/
#include <linux/device.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/memblk.h>
......@@ -10,8 +9,8 @@
#include <linux/topology.h>
static struct class memblk_class = {
.name = "memblk",
static struct sysdev_class memblk_class = {
set_kset_name("memblk"),
};
......@@ -29,27 +28,23 @@ static struct device_driver memblk_driver = {
*/
int __init register_memblk(struct memblk *memblk, int num, struct node *root)
{
int error;
memblk->node_id = memblk_to_node(num);
memblk->sysdev.name = "memblk";
memblk->sysdev.cls = &memblk_class,
memblk->sysdev.id = num;
if (root)
memblk->sysdev.root = &root->sysroot;
snprintf(memblk->sysdev.dev.name, DEVICE_NAME_SIZE, "Memory Block %u", num);
memblk->sysdev.dev.driver = &memblk_driver;
return sys_device_register(&memblk->sysdev);
error = sys_device_register(&memblk->sysdev);
if (!error)
error = sysfs_create_link(&root->sysdev.kobj,
&memblk->sysdev,kobj,
memblk->sysdev.kobj.name);
return error;
}
int __init register_memblk_type(void)
{
int error;
error = class_register(&memblk_class);
if (!error) {
error = driver_register(&memblk_driver);
if (error)
class_unregister(&memblk_class);
}
return error;
return sysdev_class_register(&memblk_class);
}
postcore_initcall(register_memblk_type);
drivers/base/node.c
View file @ be9e929d
......@@ -9,15 +9,8 @@
#include <linux/node.h>
#include <linux/topology.h>
static struct class node_class = {
.name = "node",
};
static struct device_driver node_driver = {
.name = "node",
.bus = &system_bus_type,
static struct sysdev_class node_class = {
set_kset_name("node"),
};
......@@ -26,7 +19,7 @@ static ssize_t node_read_cpumap(struct device * dev, char * buf)
struct node *node_dev = to_node(to_root(dev));
return sprintf(buf,"%lx\n",node_dev->cpumap);
}
static DEVICE_ATTR(cpumap,S_IRUGO,node_read_cpumap,NULL);
static SYSDEV_ATTR(cpumap,S_IRUGO,node_read_cpumap,NULL);
#define K(x) ((x) << (PAGE_SHIFT - 10))
static ssize_t node_read_meminfo(struct device * dev, char * buf)
......@@ -52,7 +45,7 @@ static ssize_t node_read_meminfo(struct device * dev, char * buf)
nid, K(i.freeram-i.freehigh));
}
#undef K
static DEVICE_ATTR(meminfo,S_IRUGO,node_read_meminfo,NULL);
static SYSDEV_ATTR(meminfo,S_IRUGO,node_read_meminfo,NULL);
/*
......@@ -66,17 +59,13 @@ int __init register_node(struct node *node, int num, struct node *parent)
int error;
node->cpumap = node_to_cpumask(num);
node->sysroot.id = num;
if (parent)
node->sysroot.dev.parent = &parent->sysroot.sysdev;
snprintf(node->sysroot.dev.name, DEVICE_NAME_SIZE, "Node %u", num);
snprintf(node->sysroot.dev.bus_id, BUS_ID_SIZE, "node%u", num);
node->sysroot.dev.driver = &node_driver;
node->sysroot.dev.bus = &system_bus_type;
error = sys_register_root(&node->sysroot);
node->sysdev.id = num;
node->sysdev.cls = &node_class;
error = sys_device_register(&node->sysdev);
if (!error){
device_create_file(&node->sysroot.dev, &dev_attr_cpumap);
device_create_file(&node->sysroot.dev, &dev_attr_meminfo);
sys_device_create_file(&node->sysroot.dev, &attr_cpumap);
sys_device_create_file(&node->sysroot.dev, &attr_meminfo);
}
return error;
}
......@@ -84,14 +73,6 @@ int __init register_node(struct node *node, int num, struct node *parent)
int __init register_node_type(void)
{
int error;
error = class_register(&node_class);
if (!error) {
error = driver_register(&node_driver);
if (error)
class_unregister(&node_class);
}
return error;
return sysdev_class_register(&node_class);
}
postcore_initcall(register_node_type);
drivers/base/power.c
View file @ be9e929d
......@@ -21,6 +21,21 @@
extern struct subsystem devices_subsys;
/**
* We handle system devices differently - we suspend and shut them
* down first and resume them first. That way, we do anything stupid like
* shutting down the interrupt controller before any devices..
*
* Note that there are not different stages for power management calls -
* they only get one called once when interrupts are disabled.
*/
extern int sysdev_shutdown(void);
extern int sysdev_save(u32 state);
extern int sysdev_suspend(u32 state);
extern int sysdev_resume(void);
extern int sysdev_restore(void);
/**
* device_suspend - suspend/remove all devices on the device ree
* @state: state we're entering
......@@ -50,6 +65,21 @@ int device_suspend(u32 state, u32 level)
}
}
up_write(&devices_subsys.rwsem);
/*
* Make sure system devices are suspended.
*/
switch(level) {
case SUSPEND_SAVE_STATE:
sysdev_save(state);
break;
case SUSPEND_POWER_DOWN:
sysdev_suspend(state);
break;
default:
break;
}
return error;
}
......@@ -65,6 +95,17 @@ void device_resume(u32 level)
{
struct list_head * node;
switch (level) {
case RESUME_POWER_ON:
sysdev_resume();
break;
case RESUME_RESTORE_STATE:
sysdev_restore();
break;
default:
break;
}
down_write(&devices_subsys.rwsem);
list_for_each_prev(node,&devices_subsys.kset.list) {
struct device * dev = to_dev(node);
......@@ -98,6 +139,8 @@ void device_shutdown(void)
pr_debug("Ignored.\n");
}
up_write(&devices_subsys.rwsem);
sysdev_shutdown();
}
EXPORT_SYMBOL(device_suspend);
......
drivers/base/sys.c
View file @ be9e929d
This diff is collapsed.
drivers/s390/block/xpram.c
View file @ be9e929d
......@@ -34,7 +34,7 @@
#include <linux/blk.h>
#include <linux/blkpg.h>
#include <linux/hdreg.h> /* HDIO_GETGEO */
#include <linux/device.h>
#include <linux/sysdev.h>
#include <linux/bio.h>
#include <linux/devfs_fs_kernel.h>
#include <asm/uaccess.h>
......@@ -48,12 +48,14 @@
#define PRINT_WARN(x...) printk(KERN_WARNING XPRAM_NAME " warning:" x)
#define PRINT_ERR(x...) printk(KERN_ERR XPRAM_NAME " error:" x)
static struct sysdev_class xpram_sysclass = {
set_kset_name("xpram"),
};
static struct sys_device xpram_sys_device = {
.name = "S/390 expanded memory RAM disk",
.dev = {
.name = "S/390 expanded memory RAM disk",
.bus_id = "xpram",
},
.id = 0,
.cls = &xpram_sysclass,
};
typedef struct {
......@@ -485,6 +487,7 @@ static void __exit xpram_exit(void)
unregister_blkdev(XPRAM_MAJOR, XPRAM_NAME);
devfs_remove("slram");
sys_device_unregister(&xpram_sys_device);
sysdev_class_unregister(&xpram_sys_class);
}
static int __init xpram_init(void)
......@@ -502,9 +505,15 @@ static int __init xpram_init(void)
rc = xpram_setup_sizes(xpram_pages);
if (rc)
return rc;
rc = sys_device_register(&xpram_sys_device);
rc = sysdev_class_register(&xpram_sysclass);
if (rc)
return rc;
rc = sys_device_register(&xpram_sys_device);
if (rc) {
sysdev_class_unregister(&xpram_syclass);
return rc;
}
rc = xpram_setup_blkdev();
if (rc)
sys_device_unregister(&xpram_sys_device);
......
fs/sysfs/file.c
View file @ be9e929d
......@@ -84,7 +84,7 @@ static int fill_read_buffer(struct file * file, struct sysfs_buffer * buffer)
ssize_t count;
if (!buffer->page)
buffer->page = (char *) __get_free_page(GFP_KERNEL);
buffer->page = (char *) get_zeroed_page(GFP_KERNEL);
if (!buffer->page)
return -ENOMEM;
......@@ -174,7 +174,7 @@ fill_write_buffer(struct sysfs_buffer * buffer, const char * buf, size_t count)
int error;
if (!buffer->page)
buffer->page = (char *)__get_free_page(GFP_KERNEL);
buffer->page = (char *)get_zeroed_page(GFP_KERNEL);
if (!buffer->page)
return -ENOMEM;
......
include/linux/cpu.h
View file @ be9e929d
......@@ -19,7 +19,7 @@
#ifndef _LINUX_CPU_H_
#define _LINUX_CPU_H_
#include <linux/device.h>
#include <linux/sysdev.h>
#include <linux/node.h>
#include <asm/semaphore.h>
......@@ -29,8 +29,6 @@ struct cpu {
};
extern int register_cpu(struct cpu *, int, struct node *);
extern struct class cpu_class;
struct notifier_block;
#ifdef CONFIG_SMP
......@@ -48,6 +46,7 @@ static inline void unregister_cpu_notifier(struct notifier_block *nb)
{
}
#endif /* CONFIG_SMP */
extern struct sysdev_class cpu_sysdev_class;
/* Stop CPUs going up and down. */
extern struct semaphore cpucontrol;
......
include/linux/cpufreq.h
View file @ be9e929d
......@@ -205,10 +205,6 @@ struct freq_attr {
int cpufreq_set_policy(struct cpufreq_policy *policy);
int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu);
#ifdef CONFIG_PM
int cpufreq_restore(void);
#endif
/* the proc_intf.c needs this */
int cpufreq_parse_governor (char *str_governor, unsigned int *policy, struct cpufreq_governor **governor);
......
include/linux/device.h
View file @ be9e929d
......@@ -351,30 +351,6 @@ extern int (*platform_notify_remove)(struct device * dev);
extern struct device * get_device(struct device * dev);
extern void put_device(struct device * dev);
/* drivers/base/sys.c */
struct sys_root {
u32 id;
struct device dev;
struct device sysdev;
};
extern int sys_register_root(struct sys_root *);
extern void sys_unregister_root(struct sys_root *);
struct sys_device {
char * name;
u32 id;
struct sys_root * root;
struct device dev;
struct class_device class_dev;
};
extern int sys_device_register(struct sys_device *);
extern void sys_device_unregister(struct sys_device *);
extern struct bus_type system_bus_type;
/* drivers/base/platform.c */
......
include/linux/kobject.h
View file @ be9e929d
......@@ -118,6 +118,14 @@ static inline struct kobj_type * get_ktype(struct kobject * k)
extern struct kobject * kset_find_obj(struct kset *, const char *);
/**
* Use this when initializing an embedded kset with no other
* fields to initialize.
*/
#define set_kset_name(str) .kset = { .kobj = { .name = str } }
struct subsystem {
struct kset kset;
struct rw_semaphore rwsem;
......
include/linux/list.h
View file @ be9e929d
......@@ -296,6 +296,20 @@ static inline void list_splice_init(struct list_head *list,
pos = list_entry(pos->member.next, typeof(*pos), member), \
prefetch(pos->member.next))
/**
* list_for_each_entry_reverse - iterate backwards over list of given type.
* @pos: the type * to use as a loop counter.
* @head: the head for your list.
* @member: the name of the list_struct within the struct.
*/
#define list_for_each_entry_reverse(pos, head, member) \
for (pos = list_entry((head)->prev, typeof(*pos), member), \
prefetch(pos->member.prev); \
&pos->member != (head); \
pos = list_entry(pos->member.prev, typeof(*pos), member), \
prefetch(pos->member.prev))
/**
* list_for_each_entry_safe - iterate over list of given type safe against removal of list entry
* @pos: the type * to use as a loop counter.
......
include/linux/node.h
View file @ be9e929d
......@@ -19,11 +19,11 @@
#ifndef _LINUX_NODE_H_
#define _LINUX_NODE_H_
#include <linux/device.h>
#include <linux/sysdev.h>
struct node {
unsigned long cpumap; /* Bitmap of CPUs on the Node */
struct sys_root sysroot;
struct sys_device sysdev;
};
extern int register_node(struct node *, int, struct node *);
......
include/linux/sysdev.h 0 → 100644
View file @ be9e929d
/**
* System devices follow a slightly different driver model.
* They don't need to do dynammic driver binding, can't be probed,
* and don't reside on any type of peripheral bus.
* So, we represent and treat them a little differently.
*
* We still have a notion of a driver for a system device, because we still
* want to perform basic operations on these devices.
*
* We also support auxillary drivers binding to devices of a certain class.
*
* This allows configurable drivers to register themselves for devices of
* a certain type. And, it allows class definitions to reside in generic
* code while arch-specific code can register specific drivers.
*
* Auxillary drivers registered with a NULL cls are registered as drivers
* for all system devices, and get notification calls for each device.
*/
#ifndef _SYSDEV_H_
#define _SYSDEV_H_
#include <linux/kobject.h>
struct sys_device;
struct sysdev_class {
struct list_head drivers;
/* Default operations for these types of devices */
int (*shutdown)(struct sys_device *);
int (*save)(struct sys_device *, u32 state);
int (*suspend)(struct sys_device *, u32 state);
int (*resume)(struct sys_device *);
int (*restore)(struct sys_device *);
struct kset kset;
};
extern int sysdev_class_register(struct sysdev_class *);
extern void sysdev_class_unregister(struct sysdev_class *);
/**
* Auxillary system device drivers.
*/
struct sysdev_driver {
struct list_head entry;
int (*add)(struct sys_device *);
int (*remove)(struct sys_device *);
int (*shutdown)(struct sys_device *);
int (*save)(struct sys_device *, u32 state);
int (*suspend)(struct sys_device *, u32 state);
int (*resume)(struct sys_device *);
int (*restore)(struct sys_device *);
};
extern int sysdev_driver_register(struct sysdev_class *, struct sysdev_driver *);
extern void sysdev_driver_unregister(struct sysdev_class *, struct sysdev_driver *);
/**
* sys_devices can be simplified a lot from regular devices, because they're
* simply not as versatile.
*/
struct sys_device {
u32 id;
struct sysdev_class * cls;
struct kobject kobj;
};
extern int sys_device_register(struct sys_device *);
extern void sys_device_unregister(struct sys_device *);
struct sysdev_attribute {
struct attribute attr;
ssize_t (*show)(struct sys_device *, char *);
ssize_t (*store)(struct sys_device *, const char *, size_t);
};
#define SYSDEV_ATTR(_name,_mode,_show,_store) \
struct sysdev_attribute attr_##_name = { \
.attr = {.name = __stringify(_name), .mode = _mode }, \
.show = _show, \
.store = _store, \
};
extern int sysdev_create_file(struct sys_device *, struct sysdev_attribute *);
extern void sysdev_remove_file(struct sys_device *, struct sysdev_attribute *);
#endif /* _SYSDEV_H_ */
kernel/cpufreq.c
View file @ be9e929d
......@@ -49,8 +49,6 @@ static DECLARE_RWSEM (cpufreq_notifier_rwsem);
static LIST_HEAD(cpufreq_governor_list);
static DECLARE_MUTEX (cpufreq_governor_sem);
static struct class_interface cpufreq_interface;
static int cpufreq_cpu_get(unsigned int cpu)
{
if (cpu >= NR_CPUS)
......@@ -113,24 +111,8 @@ int cpufreq_parse_governor (char *str_governor, unsigned int *policy,
EXPORT_SYMBOL_GPL(cpufreq_parse_governor);
/* forward declarations */
static int cpufreq_add_dev (struct class_device * dev);
static void cpufreq_remove_dev (struct class_device * dev);
/* drivers/base/cpu.c */
extern struct device_class cpu_devclass;
static struct class_interface cpufreq_interface = {
.class = &cpu_class,
.add = &cpufreq_add_dev,
.remove = &cpufreq_remove_dev,
};
static inline int to_cpu_nr (struct class_device *dev)
{
struct sys_device * cpu_sys_dev = container_of(dev->dev, struct sys_device, dev);
return (cpu_sys_dev->id);
}
extern struct sysdev_class cpu_sysdev_class;
/**
......@@ -331,9 +313,9 @@ static struct kobj_type ktype_cpufreq = {
*
* Adds the cpufreq interface for a CPU device.
*/
static int cpufreq_add_dev (struct class_device * class_dev)
static int cpufreq_add_dev (struct sys_device * sys_dev)
{
unsigned int cpu = to_cpu_nr(class_dev);
unsigned int cpu = sys_dev->id;
int ret = 0;
struct cpufreq_policy new_policy;
struct cpufreq_policy *policy;
......@@ -358,14 +340,12 @@ static int cpufreq_add_dev (struct class_device * class_dev)
memcpy(&new_policy,
policy,
sizeof(struct cpufreq_policy));
class_set_devdata(class_dev, policy);
up(&cpufreq_driver_sem);
init_MUTEX(&policy->lock);
/* prepare interface data */
policy->kobj.parent = &class_dev->kobj;
policy->kobj.parent = &sys_dev->kobj;
policy->kobj.ktype = &ktype_cpufreq;
// policy->dev = dev->dev;
strlcpy(policy->kobj.name, "cpufreq", KOBJ_NAME_LEN);
ret = kobject_register(&policy->kobj);
......@@ -396,12 +376,12 @@ static int cpufreq_add_dev (struct class_device * class_dev)
*
* Removes the cpufreq interface for a CPU device.
*/
static void cpufreq_remove_dev (struct class_device * class_dev)
static int cpufreq_remove_dev (struct sys_device * sys_dev)
{
unsigned int cpu = to_cpu_nr(class_dev);
unsigned int cpu = sys_dev->id;
if (!kobject_get(&cpufreq_driver->policy[cpu].kobj))
return;
return -EFAULT;
down(&cpufreq_driver_sem);
if ((cpufreq_driver->target) &&
......@@ -421,9 +401,17 @@ static void cpufreq_remove_dev (struct class_device * class_dev)
up(&cpufreq_driver_sem);
kobject_put(&cpufreq_driver->policy[cpu].kobj);
return;
return 0;
}
static int cpufreq_restore(struct sys_device *);
static struct sysdev_driver cpufreq_sysdev_driver = {
.add = cpufreq_add_dev,
.remove = cpufreq_remove_dev,
.restore = cpufreq_restore,
};
/*********************************************************************
* NOTIFIER LISTS INTERFACE *
......@@ -843,7 +831,7 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data)
memset(cpufreq_driver->policy, 0, NR_CPUS * sizeof(struct cpufreq_policy));
return class_interface_register(&cpufreq_interface);
return sysdev_driver_register(&cpu_sysdev_class,&cpufreq_sysdev_driver);
}
EXPORT_SYMBOL_GPL(cpufreq_register_driver);
......@@ -861,7 +849,7 @@ int cpufreq_unregister_driver(struct cpufreq_driver *driver)
if (!cpufreq_driver || (driver != cpufreq_driver))
return -EINVAL;
class_interface_unregister(&cpufreq_interface);
sysdev_driver_unregister(&cpu_sysdev_class, &cpufreq_sysdev_driver);
down(&cpufreq_driver_sem);
kfree(cpufreq_driver->policy);
......@@ -874,41 +862,34 @@ EXPORT_SYMBOL_GPL(cpufreq_unregister_driver);
#ifdef CONFIG_PM
/**
* cpufreq_restore - restore the CPU clock frequency after resume
*
* Restore the CPU clock frequency so that our idea of the current
* frequency reflects the actual hardware.
*/
int cpufreq_restore(void)
static int cpufreq_restore(struct sys_device * sysdev)
{
struct cpufreq_policy policy;
unsigned int i;
int cpu = sysdev->id;
unsigned int ret = 0;
struct cpufreq_policy policy;
if (in_interrupt())
panic("cpufreq_restore() called from interrupt context!");
if (!try_module_get(cpufreq_driver->owner))
goto error_out;
for (i=0;i<NR_CPUS;i++) {
if (!cpu_online(i) || !cpufreq_cpu_get(i))
continue;
if (cpu_online(cpu) && cpufreq_cpu_get(cpu)) {
down(&cpufreq_driver_sem);
memcpy(&policy, &cpufreq_driver->policy[i], sizeof(struct cpufreq_policy));
memcpy(&policy, &cpufreq_driver->policy[cpu],
sizeof(struct cpufreq_policy));
up(&cpufreq_driver_sem);
ret += cpufreq_set_policy(&policy);
cpufreq_cpu_put(i);
ret = cpufreq_set_policy(&policy);
cpufreq_cpu_put(cpu);
}
module_put(cpufreq_driver->owner);
error_out:
return ret;
}
EXPORT_SYMBOL_GPL(cpufreq_restore);
#else
#define cpufreq_restore() do {} while (0)
static int cpufreq_restore(struct sys_device * sysdev)
{
return 0;
}
#endif /* CONFIG_PM */
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