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Merge branch 'linus' into core/locking

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Conflicts:
	fs/btrfs/locking.c
This commit is contained in:
Ingo Molnar 2009-02-07 18:31:54 +01:00
commit 673f820591
2145 changed files with 40157 additions and 18604 deletions
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34
include/linux/sched.h
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@ -293,6 +293,9 @@ extern void sched_show_task(struct task_struct *p);
extern void softlockup_tick(void);
extern void touch_softlockup_watchdog(void);
extern void touch_all_softlockup_watchdogs(void);
extern int proc_dosoftlockup_thresh(struct ctl_table *table, int write,
struct file *filp, void __user *buffer,
size_t *lenp, loff_t *ppos);
extern unsigned int softlockup_panic;
extern unsigned long sysctl_hung_task_check_count;
extern unsigned long sysctl_hung_task_timeout_secs;
@ -442,6 +445,7 @@ struct pacct_struct {
* @utime: time spent in user mode, in &cputime_t units
* @stime: time spent in kernel mode, in &cputime_t units
* @sum_exec_runtime: total time spent on the CPU, in nanoseconds
* @lock: lock for fields in this struct
*
* This structure groups together three kinds of CPU time that are
* tracked for threads and thread groups. Most things considering
@ -452,6 +456,7 @@ struct task_cputime {
cputime_t utime;
cputime_t stime;
unsigned long long sum_exec_runtime;
spinlock_t lock;
};
/* Alternate field names when used to cache expirations. */
#define prof_exp stime
@ -467,7 +472,7 @@ struct task_cputime {
* used for thread group CPU clock calculations.
*/
struct thread_group_cputime {
struct task_cputime *totals;
struct task_cputime totals;
};
/*
@ -628,7 +633,6 @@ struct user_struct {
atomic_t inotify_devs; /* How many inotify devs does this user have opened? */
#endif
#ifdef CONFIG_EPOLL
atomic_t epoll_devs; /* The number of epoll descriptors currently open */
atomic_t epoll_watches; /* The number of file descriptors currently watched */
#endif
#ifdef CONFIG_POSIX_MQUEUE
@ -2182,24 +2186,30 @@ static inline int spin_needbreak(spinlock_t *lock)
* Thread group CPU time accounting.
*/
extern int thread_group_cputime_alloc(struct task_struct *);
extern void thread_group_cputime(struct task_struct *, struct task_cputime *);
static inline
void thread_group_cputime(struct task_struct *tsk, struct task_cputime *times)
{
struct task_cputime *totals = &tsk->signal->cputime.totals;
unsigned long flags;
spin_lock_irqsave(&totals->lock, flags);
*times = *totals;
spin_unlock_irqrestore(&totals->lock, flags);
}
static inline void thread_group_cputime_init(struct signal_struct *sig)
{
sig->cputime.totals = NULL;
}
sig->cputime.totals = (struct task_cputime){
.utime = cputime_zero,
.stime = cputime_zero,
.sum_exec_runtime = 0,
};
static inline int thread_group_cputime_clone_thread(struct task_struct *curr)
{
if (curr->signal->cputime.totals)
return 0;
return thread_group_cputime_alloc(curr);
spin_lock_init(&sig->cputime.totals.lock);
}
static inline void thread_group_cputime_free(struct signal_struct *sig)
{
free_percpu(sig->cputime.totals);
}
/*