Re: [PATCH 2.6.13-rc6-rt9] PI aware dynamic priority adjustment

* Ingo Molnar <[email protected]> wrote:

> > Quite contrary it makes the system more snappy and the overall test 
> > latencies go down.
> 
> we can undo that flag - it's indeed only a couple of cycles worth of 
> optimization, which wont count for most workloads. I've applied your 
> patch, but we need to do those cleanups and the fact needs to be 
> documented that !MUTEX_IRQS_OFF is not safe anymore. (most likely this 
> means that the MUTEX_IRQS_OFF flag and all related changes needs to be 
> gotten rid of)

your patch gets rid of the flag, but not of all side-effects: e.g.  
trace_local_irq_enable(ti) only takes a 'ti' parameter for 
!MUTEX_IRQS_OFF - which does not exist anymore.

	Ingo
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---

• References:
  • 2.6.13-rc6-rt9
    • From: Ingo Molnar <[email protected]>
  • [PATCH 2.6.13-rc6-rt9] PI aware dynamic priority adjustment
    • From: Thomas Gleixner <[email protected]>
  • Re: [PATCH 2.6.13-rc6-rt9] PI aware dynamic priority adjustment
    • From: Ingo Molnar <[email protected]>

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