[PATCH][RFC] preempt_count corruption across H_CEDE call with CONFIG_PREEMPT on pseries

Darren Hart dvhltc at us.ibm.com
Fri Jul 23 04:36:20 EST 2010

On 07/22/2010 11:24 AM, Darren Hart wrote:

> The following patch is most certainly not correct, but it does eliminate
> the situation on mainline 100% of the time (there is still a 25%
> reproduction rate on PREEMPT_RT). Can someone comment on:

Apologies. This particular issue is also 100% eliminated on PREEMPT_RT. 
We hit another issue possibly unrelated to this 25% of time. Please 
disregard the comment regarding 25% failure on PREEMPT_RT.

Darren Hart
IBM Linux Technology Center
Real-Time Linux Team

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