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authorJason Wessel <jason.wessel@windriver.com>2010-05-21 08:46:00 -0500
committerJason Wessel <jason.wessel@windriver.com>2010-10-22 15:34:13 -0500
commit495363d380b4f4745bd8677912688654afc44020 (patch)
tree647032c22f9e77f91578dcae864776849dbcbfa8 /drivers/serial
parentdfee3a7b92208b30f77876068aece9ea571270c2 (diff)
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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>
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