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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-05 15:30:49 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-05 15:30:49 -0800
commit897e81bea1fcfcd2c5cdb720c9efdb25da9ff374 (patch)
tree92cf33ed2c35c1ece633f09365702f1c8e24d415 /include
parentc3fa27d1367fac63ac8533d6f20ea851d0d70a10 (diff)
parent0cf55e1ec08bb5a22e068309e2d8ba1180ab4239 (diff)
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (35 commits) sched, cputime: Introduce thread_group_times() sched, cputime: Cleanups related to task_times() Revert "sched, x86: Optimize branch hint in __switch_to()" sched: Fix isolcpus boot option sched: Revert 498657a478c60be092208422fefa9c7b248729c2 sched, time: Define nsecs_to_jiffies() sched: Remove task_{u,s,g}time() sched: Introduce task_times() to replace task_{u,s}time() pair sched: Limit the number of scheduler debug messages sched.c: Call debug_show_all_locks() when dumping all tasks sched, x86: Optimize branch hint in __switch_to() sched: Optimize branch hint in context_switch() sched: Optimize branch hint in pick_next_task_fair() sched_feat_write(): Update ppos instead of file->f_pos sched: Sched_rt_periodic_timer vs cpu hotplug sched, kvm: Fix race condition involving sched_in_preempt_notifers sched: More generic WAKE_AFFINE vs select_idle_sibling() sched: Cleanup select_task_rq_fair() sched: Fix granularity of task_u/stime() sched: Fix/add missing update_rq_clock() calls ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/jiffies.h1
-rw-r--r--include/linux/kernel_stat.h1
-rw-r--r--include/linux/preempt.h5
-rw-r--r--include/linux/sched.h22
4 files changed, 20 insertions, 9 deletions
diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h
index 1a9cf78bfce5..6811f4bfc6e7 100644
--- a/include/linux/jiffies.h
+++ b/include/linux/jiffies.h
@@ -307,6 +307,7 @@ extern clock_t jiffies_to_clock_t(long x);
extern unsigned long clock_t_to_jiffies(unsigned long x);
extern u64 jiffies_64_to_clock_t(u64 x);
extern u64 nsec_to_clock_t(u64 x);
+extern unsigned long nsecs_to_jiffies(u64 n);
#define TIMESTAMP_SIZE 30
diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h
index 348fa8874b52..c059044bc6dc 100644
--- a/include/linux/kernel_stat.h
+++ b/include/linux/kernel_stat.h
@@ -25,6 +25,7 @@ struct cpu_usage_stat {
cputime64_t iowait;
cputime64_t steal;
cputime64_t guest;
+ cputime64_t guest_nice;
};
struct kernel_stat {
diff --git a/include/linux/preempt.h b/include/linux/preempt.h
index 72b1a10a59b6..2e681d9555bd 100644
--- a/include/linux/preempt.h
+++ b/include/linux/preempt.h
@@ -105,6 +105,11 @@ struct preempt_notifier;
* @sched_out: we've just been preempted
* notifier: struct preempt_notifier for the task being preempted
* next: the task that's kicking us out
+ *
+ * Please note that sched_in and out are called under different
+ * contexts. sched_out is called with rq lock held and irq disabled
+ * while sched_in is called without rq lock and irq enabled. This
+ * difference is intentional and depended upon by its users.
*/
struct preempt_ops {
void (*sched_in)(struct preempt_notifier *notifier, int cpu);
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 882dc48163b4..89115ec7d43f 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -145,7 +145,6 @@ extern unsigned long this_cpu_load(void);
extern void calc_global_load(void);
-extern u64 cpu_nr_migrations(int cpu);
extern unsigned long get_parent_ip(unsigned long addr);
@@ -171,8 +170,6 @@ print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
}
#endif
-extern unsigned long long time_sync_thresh;
-
/*
* Task state bitmask. NOTE! These bits are also
* encoded in fs/proc/array.c: get_task_state().
@@ -349,7 +346,6 @@ extern signed long schedule_timeout(signed long timeout);
extern signed long schedule_timeout_interruptible(signed long timeout);
extern signed long schedule_timeout_killable(signed long timeout);
extern signed long schedule_timeout_uninterruptible(signed long timeout);
-asmlinkage void __schedule(void);
asmlinkage void schedule(void);
extern int mutex_spin_on_owner(struct mutex *lock, struct thread_info *owner);
@@ -628,6 +624,9 @@ struct signal_struct {
cputime_t utime, stime, cutime, cstime;
cputime_t gtime;
cputime_t cgtime;
+#ifndef CONFIG_VIRT_CPU_ACCOUNTING
+ cputime_t prev_utime, prev_stime;
+#endif
unsigned long nvcsw, nivcsw, cnvcsw, cnivcsw;
unsigned long min_flt, maj_flt, cmin_flt, cmaj_flt;
unsigned long inblock, oublock, cinblock, coublock;
@@ -1013,9 +1012,13 @@ static inline struct cpumask *sched_domain_span(struct sched_domain *sd)
return to_cpumask(sd->span);
}
-extern void partition_sched_domains(int ndoms_new, struct cpumask *doms_new,
+extern void partition_sched_domains(int ndoms_new, cpumask_var_t doms_new[],
struct sched_domain_attr *dattr_new);
+/* Allocate an array of sched domains, for partition_sched_domains(). */
+cpumask_var_t *alloc_sched_domains(unsigned int ndoms);
+void free_sched_domains(cpumask_var_t doms[], unsigned int ndoms);
+
/* Test a flag in parent sched domain */
static inline int test_sd_parent(struct sched_domain *sd, int flag)
{
@@ -1033,7 +1036,7 @@ unsigned long default_scale_smt_power(struct sched_domain *sd, int cpu);
struct sched_domain_attr;
static inline void
-partition_sched_domains(int ndoms_new, struct cpumask *doms_new,
+partition_sched_domains(int ndoms_new, cpumask_var_t doms_new[],
struct sched_domain_attr *dattr_new)
{
}
@@ -1331,7 +1334,9 @@ struct task_struct {
cputime_t utime, stime, utimescaled, stimescaled;
cputime_t gtime;
+#ifndef CONFIG_VIRT_CPU_ACCOUNTING
cputime_t prev_utime, prev_stime;
+#endif
unsigned long nvcsw, nivcsw; /* context switch counts */
struct timespec start_time; /* monotonic time */
struct timespec real_start_time; /* boot based time */
@@ -1720,9 +1725,8 @@ static inline void put_task_struct(struct task_struct *t)
__put_task_struct(t);
}
-extern cputime_t task_utime(struct task_struct *p);
-extern cputime_t task_stime(struct task_struct *p);
-extern cputime_t task_gtime(struct task_struct *p);
+extern void task_times(struct task_struct *p, cputime_t *ut, cputime_t *st);
+extern void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t *st);
/*
* Per process flags