Re: [PATCH] x86: usb debug port early console

From: H. Peter Anvin
Date: Wed Jul 23 2008 - 23:17:23 EST

Eric W. Biederman wrote:

+static void dbgp_breath(void)
+ /* Sleep to give the debug port a chance to breathe */
I expect the compiler will optimise away any calls to this.

It is documentation that is if it might be a good idea to not hit the
hardware there.

Sounds an awful lot like cpu_relax(); doesn't it?


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