diff options
author | Frank Rowand <frank.rowand@am.sony.com> | 2011-09-19 14:51:14 -0700 |
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committer | Clark Williams <williams@redhat.com> | 2012-03-06 10:17:30 -0600 |
commit | 95f2063afc4de756f9f2e3f0a289d6ac12325c2e (patch) | |
tree | d0ed9204504b66132ef9868e5db5f8a3a58f7c52 /fs/exofs/Kconfig | |
parent | 958a6cc29d6c4dead29167b37ed7cf86ad4e6e1c (diff) |
preempt-rt: Convert arm boot_lock to raw
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>
Diffstat (limited to 'fs/exofs/Kconfig')
0 files changed, 0 insertions, 0 deletions