41a48d14f6
flush_thread() tries to do a TIF_DEBUG check before calling in to flush_thread_hw_breakpoint() (which subsequently clears the thread flag), but for some reason, the x86 code is manually clearing TIF_DEBUG immediately before the test, so this path will never be taken. This kills off the erroneous clear_tsk_thread_flag() and lets flush_thread_hw_breakpoint() actually get invoked. Presumably folks were getting lucky with testing and the free_thread_info() -> free_thread_xstate() path was taking care of the flush there. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Acked-by: "K.Prasad" <prasad@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Alan Stern <stern@rowland.harvard.edu> LKML-Reference: <20091005102306.GA7889@linux-sh.org> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> |
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