Re: [PATCH net-next v6 1/4] eventpoll: support busy poll per epoll instance

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On Wed, Feb 07, 2024 at 11:04:13AM -0800, Jakub Kicinski wrote:
> On Mon,  5 Feb 2024 21:04:46 +0000 Joe Damato wrote:
> > Allow busy polling on a per-epoll context basis. The per-epoll context
> > usec timeout value is preferred, but the pre-existing system wide sysctl
> > value is still supported if it specified.
> 
> Why do we need u64 for usecs? I think u16 would do, and u32 would give
> a very solid "engineering margin". If it was discussed in previous
> versions I think it's worth explaining in the commit message.

In patch 4/4 the value is limited to U32_MAX, but if you prefer I use a u32
here instead, I can make that change.




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