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Commit fcd05809 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched 

* git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched:
  sched: mark CONFIG_FAIR_GROUP_SCHED as !EXPERIMENTAL
  sched: isolate SMP balancing code a bit more
  sched: reduce balance-tasks overhead
  sched: make cpu_shares_{show,store}() static
  sched: clean up some control group code
  sched: constify sched.h
  sched: document profile=sleep requiring CONFIG_SCHEDSTATS
  sched: use show_regs() to improve __schedule_bug() output
  sched: clean up sched_domain_debug()
  sched: fix fastcall mismatch in completion APIs
  sched: fix sched_domain sysctl registration again
parents f9e83489 8ef93cf1

Documentation/kernel-parameters.txt

+2 −1
Original line number Diff line number Diff line
@@ -1444,7 +1444,8 @@ and is between 256 and 4096 characters. It is defined in the file 
			Param: "schedule" - profile schedule points.

			Param: <number> - step/bucket size as a power of 2 for

				statistical time based profiling.

			Param: "sleep" - profile D-state sleeping (millisecs)

			Param: "sleep" - profile D-state sleeping (millisecs).

				Requires CONFIG_SCHEDSTATS

			Param: "kvm" - profile VM exits.



	processor.max_cstate=	[HW,ACPI]

include/linux/completion.h

+9 −9
Original line number Diff line number Diff line
@@ -42,15 +42,15 @@ static inline void init_completion(struct completion *x) 
	init_waitqueue_head(&x->wait);

}



extern void FASTCALL(wait_for_completion(struct completion *));

extern int FASTCALL(wait_for_completion_interruptible(struct completion *x));

extern unsigned long FASTCALL(wait_for_completion_timeout(struct completion *x,

						   unsigned long timeout));

extern unsigned long FASTCALL(wait_for_completion_interruptible_timeout(

			struct completion *x, unsigned long timeout));



extern void FASTCALL(complete(struct completion *));

extern void FASTCALL(complete_all(struct completion *));

extern void wait_for_completion(struct completion *);

extern int wait_for_completion_interruptible(struct completion *x);

extern unsigned long wait_for_completion_timeout(struct completion *x,

						   unsigned long timeout);

extern unsigned long wait_for_completion_interruptible_timeout(

			struct completion *x, unsigned long timeout);



extern void complete(struct completion *);

extern void complete_all(struct completion *);



#define INIT_COMPLETION(x)	((x).done = 0)

include/linux/sched.h

+21 −16
Original line number Diff line number Diff line
@@ -828,12 +828,17 @@ struct sched_class { 
	struct task_struct * (*pick_next_task) (struct rq *rq);

	void (*put_prev_task) (struct rq *rq, struct task_struct *p);



#ifdef CONFIG_SMP

	unsigned long (*load_balance) (struct rq *this_rq, int this_cpu,

			struct rq *busiest,

			unsigned long max_nr_move, unsigned long max_load_move,

			struct rq *busiest, unsigned long max_load_move,

			struct sched_domain *sd, enum cpu_idle_type idle,

			int *all_pinned, int *this_best_prio);



	int (*move_one_task) (struct rq *this_rq, int this_cpu,

			      struct rq *busiest, struct sched_domain *sd,

			      enum cpu_idle_type idle);

#endif



	void (*set_curr_task) (struct rq *rq);

	void (*task_tick) (struct rq *rq, struct task_struct *p);

	void (*task_new) (struct rq *rq, struct task_struct *p);
@@ -1196,7 +1201,7 @@ static inline int rt_prio(int prio) 
	return 0;

}



static inline int rt_task(struct task_struct *p)

static inline int rt_task(const struct task_struct *p)

{

	return rt_prio(p->prio);

}
@@ -1211,22 +1216,22 @@ static inline void set_task_pgrp(struct task_struct *tsk, pid_t pgrp) 
	tsk->signal->__pgrp = pgrp;

}



static inline struct pid *task_pid(struct task_struct *task)

static inline struct pid *task_pid(const struct task_struct *task)

{

	return task->pids[PIDTYPE_PID].pid;

}



static inline struct pid *task_tgid(struct task_struct *task)

static inline struct pid *task_tgid(const struct task_struct *task)

{

	return task->group_leader->pids[PIDTYPE_PID].pid;

}



static inline struct pid *task_pgrp(struct task_struct *task)

static inline struct pid *task_pgrp(const struct task_struct *task)

{

	return task->group_leader->pids[PIDTYPE_PGID].pid;

}



static inline struct pid *task_session(struct task_struct *task)

static inline struct pid *task_session(const struct task_struct *task)

{

	return task->group_leader->pids[PIDTYPE_SID].pid;

}
@@ -1255,7 +1260,7 @@ struct pid_namespace; 
 * see also pid_nr() etc in include/linux/pid.h

 */



static inline pid_t task_pid_nr(struct task_struct *tsk)

static inline pid_t task_pid_nr(const struct task_struct *tsk)

{

	return tsk->pid;

}
@@ -1268,7 +1273,7 @@ static inline pid_t task_pid_vnr(struct task_struct *tsk) 
}





static inline pid_t task_tgid_nr(struct task_struct *tsk)

static inline pid_t task_tgid_nr(const struct task_struct *tsk)

{

	return tsk->tgid;

}
@@ -1281,7 +1286,7 @@ static inline pid_t task_tgid_vnr(struct task_struct *tsk) 
}





static inline pid_t task_pgrp_nr(struct task_struct *tsk)

static inline pid_t task_pgrp_nr(const struct task_struct *tsk)

{

	return tsk->signal->__pgrp;

}
@@ -1294,7 +1299,7 @@ static inline pid_t task_pgrp_vnr(struct task_struct *tsk) 
}





static inline pid_t task_session_nr(struct task_struct *tsk)

static inline pid_t task_session_nr(const struct task_struct *tsk)

{

	return tsk->signal->__session;

}
@@ -1321,7 +1326,7 @@ static inline pid_t task_ppid_nr_ns(struct task_struct *tsk, 
 * If pid_alive fails, then pointers within the task structure

 * can be stale and must not be dereferenced.

 */

static inline int pid_alive(struct task_struct *p)

static inline int pid_alive(const struct task_struct *p)

{

	return p->pids[PIDTYPE_PID].pid != NULL;

}
@@ -1332,7 +1337,7 @@ static inline int pid_alive(struct task_struct *p) 
 *

 * Check if a task structure is the first user space task the kernel created.

 */

static inline int is_global_init(struct task_struct *tsk)

static inline int is_global_init(const struct task_struct *tsk)

{

	return tsk->pid == 1;

}
@@ -1469,7 +1474,7 @@ extern int rt_mutex_getprio(struct task_struct *p); 
extern void rt_mutex_setprio(struct task_struct *p, int prio);

extern void rt_mutex_adjust_pi(struct task_struct *p);

#else

static inline int rt_mutex_getprio(struct task_struct *p)

static inline int rt_mutex_getprio(const struct task_struct *p)

{

	return p->normal_prio;

}
@@ -1721,7 +1726,7 @@ extern void wait_task_inactive(struct task_struct * p); 
 * all we care about is that we have a task with the appropriate

 * pid, we don't actually care if we have the right task.

 */

static inline int has_group_leader_pid(struct task_struct *p)

static inline int has_group_leader_pid(const struct task_struct *p)

{

	return p->pid == p->tgid;

}
@@ -1738,7 +1743,7 @@ static inline struct task_struct *next_thread(const struct task_struct *p) 
			  struct task_struct, thread_group);

}



static inline int thread_group_empty(struct task_struct *p)

static inline int thread_group_empty(const struct task_struct *p)

{

	return list_empty(&p->thread_group);

}

init/Kconfig

+0 −1
Original line number Diff line number Diff line
@@ -322,7 +322,6 @@ config CPUSETS 
config FAIR_GROUP_SCHED

	bool "Fair group CPU scheduler"

	default y

	depends on EXPERIMENTAL

	help

	  This feature lets CPU scheduler recognize task groups and control CPU

	  bandwidth allocation to such task groups.

kernel/profile.c

+5 −0
Original line number Diff line number Diff line
@@ -60,6 +60,7 @@ static int __init profile_setup(char * str) 
	int par;



	if (!strncmp(str, sleepstr, strlen(sleepstr))) {

#ifdef CONFIG_SCHEDSTATS

		prof_on = SLEEP_PROFILING;

		if (str[strlen(sleepstr)] == ',')

			str += strlen(sleepstr) + 1;
@@ -68,6 +69,10 @@ static int __init profile_setup(char * str) 
		printk(KERN_INFO

			"kernel sleep profiling enabled (shift: %ld)\n",

			prof_shift);

#else

		printk(KERN_WARNING

			"kernel sleep profiling requires CONFIG_SCHEDSTATS\n");

#endif /* CONFIG_SCHEDSTATS */

	} else if (!strncmp(str, schedstr, strlen(schedstr))) {

		prof_on = SCHED_PROFILING;

		if (str[strlen(schedstr)] == ',')