tree 647032c22f9e77f91578dcae864776849dbcbfa8
parent dfee3a7b92208b30f77876068aece9ea571270c2
author Jason Wessel <jason.wessel@windriver.com> 1274449560 -0500
committer Jason Wessel <jason.wessel@windriver.com> 1287779653 -0500

kdb,debug_core: adjust master cpu switch logic against new debug_core locking

The kdb shell needs to enforce switching back to the original CPU that
took the exception before restoring normal kernel execution.  Resuming
from a different CPU than what took the original exception will cause
problems with spin locks that are freed from the a different processor
than had taken the lock.

The special logic in dbg_cpu_switch() can go away entirely with
because the state of what cpus want to be masters or slaves will
remain unchanged between entry and exit of the debug_core exception
context.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>