Commit f72a209a authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branches 'irq-urgent-for-linus', 'x86-urgent-for-linus' and...

Merge branches 'irq-urgent-for-linus', 'x86-urgent-for-linus' and 'sched-urgent-for-linus' of git://tesla.tglx.de/git/linux-2.6-tip

* 'irq-urgent-for-linus' of git://tesla.tglx.de/git/linux-2.6-tip:
  irq: Fix check for already initialized irq_domain in irq_domain_add
  irq: Add declaration of irq_domain_simple_ops to irqdomain.h

* 'x86-urgent-for-linus' of git://tesla.tglx.de/git/linux-2.6-tip:
  x86/rtc: Don't recursively acquire rtc_lock

* 'sched-urgent-for-linus' of git://tesla.tglx.de/git/linux-2.6-tip:
  posix-cpu-timers: Cure SMP wobbles
  sched: Fix up wchan borkage
  sched/rt: Migrate equal priority tasks to available CPUs
......@@ -42,8 +42,11 @@ int mach_set_rtc_mmss(unsigned long nowtime)
{
int real_seconds, real_minutes, cmos_minutes;
unsigned char save_control, save_freq_select;
unsigned long flags;
int retval = 0;
spin_lock_irqsave(&rtc_lock, flags);
/* tell the clock it's being set */
save_control = CMOS_READ(RTC_CONTROL);
CMOS_WRITE((save_control|RTC_SET), RTC_CONTROL);
......@@ -93,12 +96,17 @@ int mach_set_rtc_mmss(unsigned long nowtime)
CMOS_WRITE(save_control, RTC_CONTROL);
CMOS_WRITE(save_freq_select, RTC_FREQ_SELECT);
spin_unlock_irqrestore(&rtc_lock, flags);
return retval;
}
unsigned long mach_get_cmos_time(void)
{
unsigned int status, year, mon, day, hour, min, sec, century = 0;
unsigned long flags;
spin_lock_irqsave(&rtc_lock, flags);
/*
* If UIP is clear, then we have >= 244 microseconds before
......@@ -125,6 +133,8 @@ unsigned long mach_get_cmos_time(void)
status = CMOS_READ(RTC_CONTROL);
WARN_ON_ONCE(RTC_ALWAYS_BCD && (status & RTC_DM_BINARY));
spin_unlock_irqrestore(&rtc_lock, flags);
if (RTC_ALWAYS_BCD || !(status & RTC_DM_BINARY)) {
sec = bcd2bin(sec);
min = bcd2bin(min);
......@@ -169,24 +179,15 @@ EXPORT_SYMBOL(rtc_cmos_write);
int update_persistent_clock(struct timespec now)
{
unsigned long flags;
int retval;
spin_lock_irqsave(&rtc_lock, flags);
retval = x86_platform.set_wallclock(now.tv_sec);
spin_unlock_irqrestore(&rtc_lock, flags);
return retval;
return x86_platform.set_wallclock(now.tv_sec);
}
/* not static: needed by APM */
void read_persistent_clock(struct timespec *ts)
{
unsigned long retval, flags;
unsigned long retval;
spin_lock_irqsave(&rtc_lock, flags);
retval = x86_platform.get_wallclock();
spin_unlock_irqrestore(&rtc_lock, flags);
ts->tv_sec = retval;
ts->tv_nsec = 0;
......
......@@ -58,8 +58,11 @@ EXPORT_SYMBOL_GPL(vrtc_cmos_write);
unsigned long vrtc_get_time(void)
{
u8 sec, min, hour, mday, mon;
unsigned long flags;
u32 year;
spin_lock_irqsave(&rtc_lock, flags);
while ((vrtc_cmos_read(RTC_FREQ_SELECT) & RTC_UIP))
cpu_relax();
......@@ -70,6 +73,8 @@ unsigned long vrtc_get_time(void)
mon = vrtc_cmos_read(RTC_MONTH);
year = vrtc_cmos_read(RTC_YEAR);
spin_unlock_irqrestore(&rtc_lock, flags);
/* vRTC YEAR reg contains the offset to 1960 */
year += 1960;
......@@ -83,8 +88,10 @@ unsigned long vrtc_get_time(void)
int vrtc_set_mmss(unsigned long nowtime)
{
int real_sec, real_min;
unsigned long flags;
int vrtc_min;
spin_lock_irqsave(&rtc_lock, flags);
vrtc_min = vrtc_cmos_read(RTC_MINUTES);
real_sec = nowtime % 60;
......@@ -95,6 +102,8 @@ int vrtc_set_mmss(unsigned long nowtime)
vrtc_cmos_write(real_sec, RTC_SECONDS);
vrtc_cmos_write(real_min, RTC_MINUTES);
spin_unlock_irqrestore(&rtc_lock, flags);
return 0;
}
......
......@@ -80,6 +80,7 @@ extern void irq_domain_del(struct irq_domain *domain);
#endif /* CONFIG_IRQ_DOMAIN */
#if defined(CONFIG_IRQ_DOMAIN) && defined(CONFIG_OF_IRQ)
extern struct irq_domain_ops irq_domain_simple_ops;
extern void irq_domain_add_simple(struct device_node *controller, int irq_base);
extern void irq_domain_generate_simple(const struct of_device_id *match,
u64 phys_base, unsigned int irq_start);
......
......@@ -1956,7 +1956,6 @@ static inline void disable_sched_clock_irqtime(void) {}
extern unsigned long long
task_sched_runtime(struct task_struct *task);
extern unsigned long long thread_group_sched_runtime(struct task_struct *task);
/* sched_exec is called by processes performing an exec */
#ifdef CONFIG_SMP
......
......@@ -29,7 +29,11 @@ void irq_domain_add(struct irq_domain *domain)
*/
for (hwirq = 0; hwirq < domain->nr_irq; hwirq++) {
d = irq_get_irq_data(irq_domain_to_irq(domain, hwirq));
if (d || d->domain) {
if (!d) {
WARN(1, "error: assigning domain to non existant irq_desc");
return;
}
if (d->domain) {
/* things are broken; just report, don't clean up */
WARN(1, "error: irq_desc already assigned to a domain");
return;
......
......@@ -250,7 +250,7 @@ void thread_group_cputime(struct task_struct *tsk, struct task_cputime *times)
do {
times->utime = cputime_add(times->utime, t->utime);
times->stime = cputime_add(times->stime, t->stime);
times->sum_exec_runtime += t->se.sum_exec_runtime;
times->sum_exec_runtime += task_sched_runtime(t);
} while_each_thread(tsk, t);
out:
rcu_read_unlock();
......@@ -312,7 +312,8 @@ static int cpu_clock_sample_group(const clockid_t which_clock,
cpu->cpu = cputime.utime;
break;
case CPUCLOCK_SCHED:
cpu->sched = thread_group_sched_runtime(p);
thread_group_cputime(p, &cputime);
cpu->sched = cputime.sum_exec_runtime;
break;
}
return 0;
......
......@@ -3724,30 +3724,6 @@ unsigned long long task_sched_runtime(struct task_struct *p)
return ns;
}
/*
* Return sum_exec_runtime for the thread group.
* In case the task is currently running, return the sum plus current's
* pending runtime that have not been accounted yet.
*
* Note that the thread group might have other running tasks as well,
* so the return value not includes other pending runtime that other
* running tasks might have.
*/
unsigned long long thread_group_sched_runtime(struct task_struct *p)
{
struct task_cputime totals;
unsigned long flags;
struct rq *rq;
u64 ns;
rq = task_rq_lock(p, &flags);
thread_group_cputime(p, &totals);
ns = totals.sum_exec_runtime + do_task_delta_exec(p, rq);
task_rq_unlock(rq, p, &flags);
return ns;
}
/*
* Account user cpu time to a process.
* @p: the process that the cpu time gets accounted to
......@@ -4372,7 +4348,7 @@ static inline void sched_submit_work(struct task_struct *tsk)
blk_schedule_flush_plug(tsk);
}
asmlinkage void schedule(void)
asmlinkage void __sched schedule(void)
{
struct task_struct *tsk = current;
......
......@@ -1050,7 +1050,7 @@ select_task_rq_rt(struct task_struct *p, int sd_flag, int flags)
*/
if (curr && unlikely(rt_task(curr)) &&
(curr->rt.nr_cpus_allowed < 2 ||
curr->prio < p->prio) &&
curr->prio <= p->prio) &&
(p->rt.nr_cpus_allowed > 1)) {
int target = find_lowest_rq(p);
......@@ -1581,7 +1581,7 @@ static void task_woken_rt(struct rq *rq, struct task_struct *p)
p->rt.nr_cpus_allowed > 1 &&
rt_task(rq->curr) &&
(rq->curr->rt.nr_cpus_allowed < 2 ||
rq->curr->prio < p->prio))
rq->curr->prio <= p->prio))
push_rt_tasks(rq);
}
......
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