Re: [PATCH] Optimize struct task_delay_info

[Andi Kleen]

"Zhang, Yanmin" <yanmin_zhang@xxxxxxxxxxxxxxx> writes:
> replace them;
> 2) Delete lock. The change to the protected data has no nested cases.
> In addition, the result is for performance data collection, so itʼs
> unnecessary to add such lock. 

Not sure that's a good idea. People expect their performance counts
to be accurate too. You could possibly use atomics though, but 
when there are multiple counters updated the spinlock will be likely
faster.

-Andi
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