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Commit 7cc3ef9a authored by Linus Torvalds's avatar Linus Torvalds
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Merge bk://linux-dj.bkbits.net/cpufreq 

into penguin.transmeta.com:/home/penguin/torvalds/repositories/kernel/linux
parents 26a97bb1 ce2d3f00
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Showing with 397 additions and 64 deletions
arch/i386/kernel/cpu/cpufreq/elanfreq.c
View file @ 7cc3ef9a
......@@ -242,6 +242,8 @@ static int __init elanfreq_init(void)
NR_CPUS * sizeof(struct cpufreq_policy), GFP_KERNEL);
if (!driver)
return -ENOMEM;
memset(driver, 0, sizeof(struct cpufreq_driver) +
NR_CPUS * sizeof(struct cpufreq_policy));
driver->policy = (struct cpufreq_policy *) (driver + 1);
......@@ -260,8 +262,6 @@ static int __init elanfreq_init(void)
driver->verify = &elanfreq_verify;
driver->setpolicy = &elanfreq_setpolicy;
driver->init = NULL;
driver->exit = NULL;
strncpy(driver->name, "elanfreq", CPUFREQ_NAME_LEN);
driver->policy[0].cpu = 0;
......
arch/i386/kernel/cpu/cpufreq/gx-suspmod.c
View file @ 7cc3ef9a
......@@ -431,11 +431,15 @@ static int __init cpufreq_gx_init(void)
driver = kmalloc(sizeof(struct cpufreq_driver) + NR_CPUS * sizeof(struct cpufreq_policy), GFP_KERNEL);
if (driver == NULL)
return -ENOMEM;
memset(driver, 0, sizeof(struct cpufreq_driver) +
NR_CPUS * sizeof(struct cpufreq_policy));
params = kmalloc(sizeof(struct gxfreq_params), GFP_KERNEL);
if (params == NULL) {
kfree(driver);
return -ENOMEM;
}
memset(params, 0, sizeof(struct gxfreq_params));
driver->policy = (struct cpufreq_policy *)(driver + 1);
params->cs55x0 = gx_pci;
......
arch/i386/kernel/cpu/cpufreq/longhaul.c
View file @ 7cc3ef9a
......@@ -762,6 +762,8 @@ static int __init longhaul_init (void)
NR_CPUS * sizeof(struct cpufreq_policy), GFP_KERNEL);
if (!driver)
return -ENOMEM;
memset(driver, 0, sizeof(struct cpufreq_driver) +
NR_CPUS * sizeof(struct cpufreq_policy));
driver->policy = (struct cpufreq_policy *) (driver + 1);
......@@ -771,8 +773,7 @@ static int __init longhaul_init (void)
driver->verify = &longhaul_verify;
driver->setpolicy = &longhaul_setpolicy;
driver->init = NULL;
driver->exit = NULL;
strncpy(driver->name, "longhaul", CPUFREQ_NAME_LEN);
driver->policy[0].cpu = 0;
......
arch/i386/kernel/cpu/cpufreq/longrun.c
View file @ 7cc3ef9a
......@@ -54,7 +54,7 @@ static void longrun_get_policy(struct cpufreq_policy *policy)
policy->min = longrun_low_freq + msr_lo *
((longrun_high_freq - longrun_low_freq) / 100);
policy->min = longrun_low_freq + msr_hi *
policy->max = longrun_low_freq + msr_hi *
((longrun_high_freq - longrun_low_freq) / 100);
policy->cpu = 0;
}
......@@ -241,6 +241,8 @@ static int __init longrun_init(void)
NR_CPUS * sizeof(struct cpufreq_policy), GFP_KERNEL);
if (!driver)
return -ENOMEM;
memset(driver, 0, sizeof(struct cpufreq_driver) +
NR_CPUS * sizeof(struct cpufreq_policy));
driver->policy = (struct cpufreq_policy *) (driver + 1);
......@@ -251,8 +253,7 @@ static int __init longrun_init(void)
driver->policy[0].cpuinfo.min_freq = longrun_low_freq;
driver->policy[0].cpuinfo.max_freq = longrun_high_freq;
driver->policy[0].cpuinfo.transition_latency = CPUFREQ_ETERNAL;
driver->init = NULL;
driver->exit = NULL;
strncpy(driver->name, "longrun", CPUFREQ_NAME_LEN);
longrun_get_policy(&driver->policy[0]);
......
arch/i386/kernel/cpu/cpufreq/p4-clockmod.c
View file @ 7cc3ef9a
......@@ -220,6 +220,8 @@ static int __init cpufreq_p4_init(void)
NR_CPUS * sizeof(struct cpufreq_policy), GFP_KERNEL);
if (!driver)
return -ENOMEM;
memset(driver, 0, sizeof(struct cpufreq_driver) +
NR_CPUS * sizeof(struct cpufreq_policy));
driver->policy = (struct cpufreq_policy *) (driver + 1);
......@@ -240,8 +242,6 @@ static int __init cpufreq_p4_init(void)
driver->verify = &cpufreq_p4_verify;
driver->setpolicy = &cpufreq_p4_setpolicy;
driver->init = NULL;
driver->exit = NULL;
strncpy(driver->name, "p4-clockmod", CPUFREQ_NAME_LEN);
for (i=0;i<NR_CPUS;i++) {
......
arch/i386/kernel/cpu/cpufreq/powernow-k6.c
View file @ 7cc3ef9a
......@@ -172,6 +172,8 @@ static int __init powernow_k6_init(void)
release_region (POWERNOW_IOPORT, 16);
return -ENOMEM;
}
memset(driver, 0, sizeof(struct cpufreq_driver) +
NR_CPUS * sizeof(struct cpufreq_policy));
driver->policy = (struct cpufreq_policy *) (driver + 1);
/* table init */
......@@ -184,8 +186,6 @@ static int __init powernow_k6_init(void)
driver->verify = &powernow_k6_verify;
driver->setpolicy = &powernow_k6_setpolicy;
driver->init = NULL;
driver->exit = NULL;
strncpy(driver->name, "powernow-k6", CPUFREQ_NAME_LEN);
/* cpuinfo and default policy values */
......
arch/i386/kernel/cpu/cpufreq/speedstep.c
View file @ 7cc3ef9a
......@@ -674,6 +674,8 @@ static int __init speedstep_init(void)
NR_CPUS * sizeof(struct cpufreq_policy), GFP_KERNEL);
if (!driver)
return -ENOMEM;
memset(driver, 0, sizeof(struct cpufreq_driver) +
NR_CPUS * sizeof(struct cpufreq_policy));
driver->policy = (struct cpufreq_policy *) (driver + 1);
......@@ -690,8 +692,6 @@ static int __init speedstep_init(void)
driver->verify = &speedstep_verify;
driver->setpolicy = &speedstep_setpolicy;
driver->init = NULL;
driver->exit = NULL;
strncpy(driver->name, "speedstep", CPUFREQ_NAME_LEN);
driver->policy[0].cpuinfo.transition_latency = CPUFREQ_ETERNAL;
......
include/linux/cpufreq.h
View file @ 7cc3ef9a
......@@ -2,10 +2,10 @@
* linux/include/linux/cpufreq.h
*
* Copyright (C) 2001 Russell King
* (C) 2002 Dominik Brodowski <linux@brodo.de>
* (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
*
*
* $Id: cpufreq.h,v 1.29 2002/11/11 15:35:47 db Exp $
* $Id: cpufreq.h,v 1.36 2003/01/20 17:31:48 db Exp $
*
* 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
......@@ -20,6 +20,9 @@
#include <linux/device.h>
#define CPUFREQ_NAME_LEN 16
/*********************************************************************
* CPUFREQ NOTIFIER INTERFACE *
*********************************************************************/
......@@ -37,14 +40,17 @@ int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list);
#define CPUFREQ_POLICY_POWERSAVE (1)
#define CPUFREQ_POLICY_PERFORMANCE (2)
#define CPUFREQ_POLICY_GOVERNOR (3)
/* Frequency values here are CPU kHz so that hardware which doesn't run
* with some frequencies can complain without having to guess what per
* cent / per mille means.
* Maximum transition latency is in nanoseconds - if it's unknown,
* Maximum transition latency is in microseconds - if it's unknown,
* CPUFREQ_ETERNAL shall be used.
*/
struct cpufreq_governor;
#define CPUFREQ_ETERNAL (-1)
struct cpufreq_cpuinfo {
unsigned int max_freq;
......@@ -57,6 +63,7 @@ struct cpufreq_policy {
unsigned int min; /* in kHz */
unsigned int max; /* in kHz */
unsigned int policy; /* see above */
struct cpufreq_governor *governor; /* see below */
struct cpufreq_cpuinfo cpuinfo; /* see above */
struct intf_data intf; /* interface data */
};
......@@ -104,19 +111,56 @@ static inline unsigned long cpufreq_scale(unsigned long old, u_int div, u_int mu
return carry + val;
};
/*********************************************************************
* CPUFREQ GOVERNORS *
*********************************************************************/
#define CPUFREQ_GOV_START 1
#define CPUFREQ_GOV_STOP 2
#define CPUFREQ_GOV_LIMITS 3
struct cpufreq_governor {
char name[CPUFREQ_NAME_LEN];
int (*governor) (struct cpufreq_policy *policy,
unsigned int event);
struct list_head governor_list;
struct module *owner;
};
/* pass a target to the cpufreq driver
* _l : (cpufreq_driver_sem is not held)
*/
inline int cpufreq_driver_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation);
inline int cpufreq_driver_target_l(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation);
/* pass an event to the cpufreq governor */
int cpufreq_governor_l(unsigned int cpu, unsigned int event);
int cpufreq_register_governor(struct cpufreq_governor *governor);
void cpufreq_unregister_governor(struct cpufreq_governor *governor);
/*********************************************************************
* CPUFREQ DRIVER INTERFACE *
*********************************************************************/
#define CPUFREQ_NAME_LEN 16
#define CPUFREQ_RELATION_L 0 /* lowest frequency at or above target */
#define CPUFREQ_RELATION_H 1 /* highest frequency below or at target */
struct cpufreq_driver {
/* needed by all drivers */
int (*verify) (struct cpufreq_policy *policy);
int (*setpolicy) (struct cpufreq_policy *policy);
struct cpufreq_policy *policy;
char name[CPUFREQ_NAME_LEN];
/* define one out of two */
int (*setpolicy) (struct cpufreq_policy *policy);
int (*target) (struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation);
/* optional, for the moment */
int (*init) (struct cpufreq_policy *policy);
int (*exit) (struct cpufreq_policy *policy);
......@@ -276,4 +320,10 @@ int cpufreq_frequency_table_setpolicy(struct cpufreq_policy *policy,
struct cpufreq_frequency_table *table,
unsigned int *index);
int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
struct cpufreq_frequency_table *table,
unsigned int target_freq,
unsigned int relation,
unsigned int *index);
#endif /* _LINUX_CPUFREQ_H */
kernel/cpufreq.c
View file @ 7cc3ef9a
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