On 07/22/2010 03:25 PM, Benjamin Herrenschmidt wrote:
On Thu, 2010-07-22 at 11:24 -0700, Darren Hart wrote:
1) How can the preempt_count() get mangled across the H_CEDE hcall?
2) Should we call preempt_enable() in cpu_idle() prior to cpu_die() ?
The preempt count is on the thread info at the bottom of the stack.
Can you check the stack pointers ?
Hi Ben, sorry if I didn't get back to you on this already. I checked the
stack pointer before and after the cede call and they match.
--
Darren Hart
IBM Linux Technology Center
Real-Time Linux Team
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