locks: allow lockd to process blocked locks during grace period

[safe/jmp/linux-2.6] / include / linux / cpufreq.h

diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 3a25235..6fd5668 100644 (file)
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -4,9 +4,6 @@
  *  Copyright (C) 2001 Russell King
  *            (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
  *            
- *
- * $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
  * published by the Free Software Foundation.
@@ -32,12 +29,24 @@
  *                     CPUFREQ NOTIFIER INTERFACE                    *
  *********************************************************************/
 
-int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list);
-int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list);
-
 #define CPUFREQ_TRANSITION_NOTIFIER    (0)
 #define CPUFREQ_POLICY_NOTIFIER                (1)
 
+#ifdef CONFIG_CPU_FREQ
+int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list);
+int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list);
+#else          /* CONFIG_CPU_FREQ */
+static inline int cpufreq_register_notifier(struct notifier_block *nb,
+                                               unsigned int list)
+{
+       return 0;
+}
+static inline int cpufreq_unregister_notifier(struct notifier_block *nb,
+                                               unsigned int list)
+{
+       return 0;
+}
+#endif         /* CONFIG_CPU_FREQ */
 
 /* if (cpufreq_driver->target) exists, the ->governor decides what frequency
  * within the limits is used. If (cpufreq_driver->setpolicy> exists, these
@@ -71,7 +80,8 @@ struct cpufreq_real_policy {
 };
 
 struct cpufreq_policy {
-       cpumask_t               cpus;   /* affected CPUs */
+       cpumask_t               cpus;   /* CPUs requiring sw coordination */
+       cpumask_t               related_cpus; /* CPUs with any coordination */
        unsigned int            shared_type; /* ANY or ALL affected CPUs
                                                should set cpufreq */
        unsigned int            cpu;    /* cpu nr of registered CPU */
@@ -96,6 +106,7 @@ struct cpufreq_policy {
 #define CPUFREQ_ADJUST         (0)
 #define CPUFREQ_INCOMPATIBLE   (1)
 #define CPUFREQ_NOTIFY         (2)
+#define CPUFREQ_START          (3)
 
 #define CPUFREQ_SHARED_TYPE_NONE (0) /* None */
 #define CPUFREQ_SHARED_TYPE_HW  (1) /* HW does needed coordination */
@@ -155,6 +166,13 @@ struct cpufreq_governor {
        char    name[CPUFREQ_NAME_LEN];
        int     (*governor)     (struct cpufreq_policy *policy,
                                 unsigned int event);
+       ssize_t (*show_setspeed)        (struct cpufreq_policy *policy,
+                                        char *buf);
+       int     (*store_setspeed)       (struct cpufreq_policy *policy,
+                                        unsigned int freq);
+       unsigned int max_transition_latency; /* HW must be able to switch to
+                       next freq faster than this value in nano secs or we
+                       will fallback to performance governor */
        struct list_head        governor_list;
        struct module           *owner;
 };
@@ -225,8 +243,8 @@ struct cpufreq_driver {
 #define CPUFREQ_PM_NO_WARN     0x04    /* don't warn on suspend/resume speed
                                         * mismatches */
 
-int cpufreq_register_driver(const struct cpufreq_driver *driver_data);
-int cpufreq_unregister_driver(const struct cpufreq_driver *driver_data);
+int cpufreq_register_driver(struct cpufreq_driver *driver_data);
+int cpufreq_unregister_driver(struct cpufreq_driver *driver_data);
 
 
 void cpufreq_notify_transition(struct cpufreq_freqs *freqs, unsigned int state);
@@ -257,7 +275,6 @@ struct freq_attr {
 /*********************************************************************
  *                        CPUFREQ 2.6. INTERFACE                     *
  *********************************************************************/
-int cpufreq_set_policy(struct cpufreq_policy *policy);
 int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu);
 int cpufreq_update_policy(unsigned int cpu);
 
@@ -280,12 +297,27 @@ static inline unsigned int cpufreq_quick_get(unsigned int cpu)
  *********************************************************************/
 
 
-#ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE
+/*
+  Performance governor is fallback governor if any other gov failed to
+  auto load due latency restrictions
+*/
+#ifdef CONFIG_CPU_FREQ_GOV_PERFORMANCE
 extern struct cpufreq_governor cpufreq_gov_performance;
-#define CPUFREQ_DEFAULT_GOVERNOR       &cpufreq_gov_performance
+#endif
+#ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE
+#define CPUFREQ_DEFAULT_GOVERNOR       (&cpufreq_gov_performance)
+#elif defined(CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE)
+extern struct cpufreq_governor cpufreq_gov_powersave;
+#define CPUFREQ_DEFAULT_GOVERNOR       (&cpufreq_gov_powersave)
 #elif defined(CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE)
 extern struct cpufreq_governor cpufreq_gov_userspace;
-#define CPUFREQ_DEFAULT_GOVERNOR       &cpufreq_gov_userspace
+#define CPUFREQ_DEFAULT_GOVERNOR       (&cpufreq_gov_userspace)
+#elif defined(CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND)
+extern struct cpufreq_governor cpufreq_gov_ondemand;
+#define CPUFREQ_DEFAULT_GOVERNOR       (&cpufreq_gov_ondemand)
+#elif defined(CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE)
+extern struct cpufreq_governor cpufreq_gov_conservative;
+#define CPUFREQ_DEFAULT_GOVERNOR       (&cpufreq_gov_conservative)
 #endif