045470f9f7
The arm boot_lock is used by the secondary processor startup code. The locking
task is the idle thread, which has idle->sched_class == &idle_sched_class.
idle_sched_class->enqueue_task == NULL, so if the idle task blocks on the
lock, the attempt to wake it when the lock becomes available will fail:
try_to_wake_up()
...
activate_task()
enqueue_task()
p->sched_class->enqueue_task(rq, p, flags)
Fix by converting boot_lock to a raw spin lock.
Signed-off-by: Frank Rowand <frank.rowand@am.sony.com>
Link: http://lkml.kernel.org/r/4E77B952.3010606@am.sony.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
|
||
|---|---|---|
| .. | ||
| include/mach | ||
| Kconfig | ||
| Makefile | ||
| Makefile.boot | ||
| generic.h | ||
| headsmp.S | ||
| hotplug.c | ||
| pl080.c | ||
| pl080.h | ||
| platsmp.c | ||
| restart.c | ||
| spear3xx.c | ||
| spear6xx.c | ||
| spear13xx.c | ||
| spear300.c | ||
| spear310.c | ||
| spear320.c | ||
| spear1310.c | ||
| spear1340.c | ||
| time.c | ||