cmm.c File Reference

#include <linux/ctype.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/gfp.h>
#include <linux/init.h>
#include <linux/kthread.h>
#include <linux/module.h>
#include <linux/oom.h>
#include <linux/reboot.h>
#include <linux/sched.h>
#include <linux/stringify.h>
#include <linux/swap.h>
#include <linux/device.h>
#include <asm/firmware.h>
#include <asm/hvcall.h>
#include <asm/mmu.h>
#include <asm/pgalloc.h>
#include <asm/uaccess.h>
#include <linux/memory.h>
#include "plpar_wrappers.h"

Go to the source code of this file.

Data Structures
struct	cmm_page_array

Macros
#define	CMM_DRIVER_VERSION   "1.0.0"
#define	CMM_DEFAULT_DELAY   1
#define	CMM_HOTPLUG_DELAY   5
#define	CMM_DEBUG   0
#define	CMM_DISABLE   0
#define	CMM_OOM_KB   1024
#define	CMM_MIN_MEM_MB   256
#define	KB2PAGES(_p)   ((_p)>>(PAGE_SHIFT-10))
#define	PAGES2KB(_p)   ((_p)<<(PAGE_SHIFT-10))
#define	CMM_MEM_HOTPLUG_PRI   1
#define	CMM_MEM_ISOLATE_PRI   15
#define	CMM_NR_PAGES   ((PAGE_SIZE - sizeof(void *) - sizeof(unsigned long)) / sizeof(unsigned long))
#define	cmm_dbg(...)   if (cmm_debug) { printk(KERN_INFO "cmm: "__VA_ARGS__); }
#define	CMM_SHOW(name, format, args...)

Functions
	MODULE_AUTHOR ("Brian King <[email protected]>")
	MODULE_DESCRIPTION ("IBM System p Collaborative Memory Manager")
	MODULE_LICENSE ("GPL")
	MODULE_VERSION (CMM_DRIVER_VERSION)
	module_param_named (delay, delay, uint, S_IRUGO|S_IWUSR)
	MODULE_PARM_DESC (delay,"Delay (in seconds) between polls to query hypervisor paging requests. ""[Default="__stringify(CMM_DEFAULT_DELAY)"]")
	module_param_named (hotplug_delay, hotplug_delay, uint, S_IRUGO|S_IWUSR)
	MODULE_PARM_DESC (delay,"Delay (in seconds) after memory hotplug remove ""before loaning resumes. ""[Default="__stringify(CMM_HOTPLUG_DELAY)"]")
	module_param_named (oom_kb, oom_kb, uint, S_IRUGO|S_IWUSR)
	MODULE_PARM_DESC (oom_kb,"Amount of memory in kb to free on OOM. ""[Default="__stringify(CMM_OOM_KB)"]")
	module_param_named (min_mem_mb, min_mem_mb, ulong, S_IRUGO|S_IWUSR)
	MODULE_PARM_DESC (min_mem_mb,"Minimum amount of memory (in MB) to not balloon. ""[Default="__stringify(CMM_MIN_MEM_MB)"]")
	module_param_named (debug, cmm_debug, uint, S_IRUGO|S_IWUSR)
	MODULE_PARM_DESC (debug,"Enable module debugging logging. Set to 1 to enable. ""[Default="__stringify(CMM_DEBUG)"]")
	CMM_SHOW (loaned_kb,"%lu\n", PAGES2KB(loaned_pages))
	CMM_SHOW (loaned_target_kb,"%lu\n", PAGES2KB(loaned_pages_target))
	module_param_call (disable, cmm_set_disable, param_get_uint,&cmm_disabled, S_IRUGO|S_IWUSR)
	MODULE_PARM_DESC (disable,"Disable CMM. Set to 1 to disable. ""[Default="__stringify(CMM_DISABLE)"]")
	module_init (cmm_init)
	module_exit (cmm_exit)

Macro Definition Documentation

#define cmm_dbg

(

...

)

if (cmm_debug) { printk(KERN_INFO "cmm: "__VA_ARGS__); }

Definition at line 94 of file cmm.c.

#define CMM_DEBUG   0

Definition at line 49 of file cmm.c.

#define CMM_DEFAULT_DELAY   1

Definition at line 47 of file cmm.c.

#define CMM_DISABLE   0

Definition at line 50 of file cmm.c.

#define CMM_DRIVER_VERSION   "1.0.0"

Definition at line 46 of file cmm.c.

#define CMM_HOTPLUG_DELAY   5

Definition at line 48 of file cmm.c.

#define CMM_MEM_HOTPLUG_PRI   1

Definition at line 59 of file cmm.c.

#define CMM_MEM_ISOLATE_PRI   15

Definition at line 60 of file cmm.c.

#define CMM_MIN_MEM_MB   256

Definition at line 52 of file cmm.c.

#define CMM_NR_PAGES   ((PAGE_SIZE - sizeof(void *) - sizeof(unsigned long)) / sizeof(unsigned long))

Definition at line 92 of file cmm.c.

#define CMM_OOM_KB   1024

Definition at line 51 of file cmm.c.

#define CMM_SHOW	(		name,
			format,
			args...
	)

Value:

static ssize_t show_##name(struct device *dev,  \
                   struct device_attribute *attr,   \
                   char *buf)           \
    {                           \
        return sprintf(buf, format, ##args);        \
    }                           \
    static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)

Definition at line 349 of file cmm.c.

#define KB2PAGES

(

_p

)

((_p)>>(PAGE_SHIFT-10))

Definition at line 53 of file cmm.c.

#define PAGES2KB

(

_p

)

((_p)<<(PAGE_SHIFT-10))

Definition at line 54 of file cmm.c.

Function Documentation

CMM_SHOW	(	loaned_kb	,
		"%lu\n"	,
		PAGES2KB(loaned_pages)
	)

CMM_SHOW	(	loaned_target_kb	,
		"%lu\n"	,
		PAGES2KB(loaned_pages_target)
	)

MODULE_AUTHOR

(

"Brian King <[email protected]>"

)

MODULE_DESCRIPTION

(

"IBM System p Collaborative Memory Manager"

)

module_exit

(

cmm_exit

)

module_init

(

cmm_init

)

MODULE_LICENSE

(

"GPL"

)

module_param_call	(	disable	,
		cmm_set_disable	,
		param_get_uint	,
		&	cmm_disabled,
		S_IRUGO|	S_IWUSR
	)

module_param_named	(	delay	,
		delay	,
		uint	,
		S_IRUGO|	S_IWUSR
	)

module_param_named	(	hotplug_delay	,
		hotplug_delay	,
		uint	,
		S_IRUGO|	S_IWUSR
	)

module_param_named	(	oom_kb	,
		oom_kb	,
		uint	,
		S_IRUGO|	S_IWUSR
	)

module_param_named	(	min_mem_mb	,
		min_mem_mb	,
		ulong	,
		S_IRUGO|	S_IWUSR
	)

module_param_named	(	debug	,
		cmm_debug	,
		uint	,
		S_IRUGO|	S_IWUSR
	)

MODULE_PARM_DESC	(	delay	,
		"Delay (in seconds) between polls to query hypervisor paging requests. """	[Default="__stringify(CMM_DEFAULT_DELAY)"]
	)

MODULE_PARM_DESC	(	delay	,
		"Delay (in seconds) after memory hotplug remove ""before loaning resumes. """	[Default="__stringify(CMM_HOTPLUG_DELAY)"]
	)

MODULE_PARM_DESC	(	oom_kb	,
		"Amount of memory in kb to free on OOM. """	[Default="__stringify(CMM_OOM_KB)"]
	)

MODULE_PARM_DESC	(	min_mem_mb	,
		"Minimum amount of memory (in MB) to not balloon. """	[Default="__stringify(CMM_MIN_MEM_MB)"]
	)

MODULE_PARM_DESC	(	debug	,
		"Enable module debugging logging. Set to 1 to enable. """	[Default="__stringify(CMM_DEBUG)"]
	)

MODULE_PARM_DESC	(	disable	,
		"Disable CMM. Set to 1 to disable. """	[Default="__stringify(CMM_DISABLE)"]
	)

MODULE_VERSION

(

CMM_DRIVER_VERSION

)