Merge branch 'rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip...

[linux-flexiantxendom0-natty.git] / include / linux / sched.h

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 886df41..d4646ae 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -117,6 +117,7 @@ struct fs_struct;
  *    11 bit fractions.
  */
 extern unsigned long avenrun[];                /* Load averages */
+extern void get_avenrun(unsigned long *loads, unsigned long offset, int shift);
 
 #define FSHIFT         11              /* nr of bits of precision */
 #define FIXED_1                (1<<FSHIFT)     /* 1.0 as fixed-point */
@@ -136,8 +137,8 @@ DECLARE_PER_CPU(unsigned long, process_counts);
 extern int nr_processes(void);
 extern unsigned long nr_running(void);
 extern unsigned long nr_uninterruptible(void);
-extern unsigned long nr_active(void);
 extern unsigned long nr_iowait(void);
+extern void calc_global_load(void);
 
 extern unsigned long get_parent_ip(unsigned long addr);
 
@@ -839,7 +840,17 @@ struct sched_group {
         */
        u32 reciprocal_cpu_power;
 
-       unsigned long cpumask[];
+       /*
+        * The CPUs this group covers.
+        *
+        * NOTE: this field is variable length. (Allocated dynamically
+        * by attaching extra space to the end of the structure,
+        * depending on how many CPUs the kernel has booted up with)
+        *
+        * It is also be embedded into static data structures at build
+        * time. (See 'struct static_sched_group' in kernel/sched.c)
+        */
+       unsigned long cpumask[0];
 };
 
 static inline struct cpumask *sched_group_cpus(struct sched_group *sg)
@@ -925,8 +936,17 @@ struct sched_domain {
        char *name;
 #endif
 
-       /* span of all CPUs in this domain */
-       unsigned long span[];
+       /*
+        * Span of all CPUs in this domain.
+        *
+        * NOTE: this field is variable length. (Allocated dynamically
+        * by attaching extra space to the end of the structure,
+        * depending on how many CPUs the kernel has booted up with)
+        *
+        * It is also be embedded into static data structures at build
+        * time. (See 'struct static_sched_domain' in kernel/sched.c)
+        */
+       unsigned long span[0];
 };
 
 static inline struct cpumask *sched_domain_span(struct sched_domain *sd)