Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / include / linux / cpufreq.h

diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 910eca3..17866d7 100644 (file)
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -14,6 +14,7 @@
 #ifndef _LINUX_CPUFREQ_H
 #define _LINUX_CPUFREQ_H
 
+#include <linux/mutex.h>
 #include <linux/config.h>
 #include <linux/notifier.h>
 #include <linux/threads.h>
@@ -23,6 +24,7 @@
 #include <linux/completion.h>
 #include <linux/workqueue.h>
 #include <linux/cpumask.h>
+#include <asm/div64.h>
 
 #define CPUFREQ_NAME_LEN 16
 
@@ -49,7 +51,7 @@ int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list);
 /* 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 microseconds - if it's unknown,
+ * Maximum transition latency is in nanoseconds - if it's unknown,
  * CPUFREQ_ETERNAL shall be used.
  */
 
@@ -81,7 +83,7 @@ struct cpufreq_policy {
         unsigned int           policy; /* see above */
        struct cpufreq_governor *governor; /* see below */
 
-       struct semaphore        lock;   /* CPU ->setpolicy or ->target may
+       struct mutex            lock;   /* CPU ->setpolicy or ->target may
                                           only be called once a time */
 
        struct work_struct      update; /* if update_policy() needs to be
@@ -103,6 +105,7 @@ struct cpufreq_policy {
 #define CPUFREQ_PRECHANGE      (0)
 #define CPUFREQ_POSTCHANGE     (1)
 #define CPUFREQ_RESUMECHANGE   (8)
+#define CPUFREQ_SUSPENDCHANGE  (9)
 
 struct cpufreq_freqs {
        unsigned int cpu;       /* cpu nr */
@@ -200,6 +203,7 @@ struct cpufreq_driver {
 
        /* optional */
        int     (*exit)         (struct cpufreq_policy *policy);
+       int     (*suspend)      (struct cpufreq_policy *policy, pm_message_t pmsg);
        int     (*resume)       (struct cpufreq_policy *policy);
        struct freq_attr        **attr;
 };
@@ -211,7 +215,8 @@ struct cpufreq_driver {
 #define CPUFREQ_CONST_LOOPS    0x02    /* loops_per_jiffy or other kernel
                                         * "constants" aren't affected by
                                         * frequency transitions */
-
+#define CPUFREQ_PM_NO_WARN     0x04    /* don't warn on suspend/resume speed
+                                        * mismatches */
 
 int cpufreq_register_driver(struct cpufreq_driver *driver_data);
 int cpufreq_unregister_driver(struct cpufreq_driver *driver_data);
@@ -252,6 +257,16 @@ int cpufreq_update_policy(unsigned int cpu);
 /* query the current CPU frequency (in kHz). If zero, cpufreq couldn't detect it */
 unsigned int cpufreq_get(unsigned int cpu);
 
+/* query the last known CPU freq (in kHz). If zero, cpufreq couldn't detect it */
+#ifdef CONFIG_CPU_FREQ
+unsigned int cpufreq_quick_get(unsigned int cpu);
+#else
+static inline unsigned int cpufreq_quick_get(unsigned int cpu)
+{
+       return 0;
+}
+#endif
+
 
 /*********************************************************************
  *                       CPUFREQ DEFAULT GOVERNOR                    *