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SubjectRe: Why do some net drivers require __OPTIMIZE__?
On 6 Jan 2003, Robert Love wrote:

> On Mon, 2003-01-06 at 10:04, Richard B. Johnson wrote:
> > You need to optimize in order enable inline code generation. It is
> > essential to use in-line code in many places because, if the compiler
> > actually calls these functions they would have to be protected
> > from reentry.
> I do not think this is correct.
> Concurrency concerns would not change wrt calling the function vs.
> inlining it.
> More likely some code, i.e. asm, just assumes inlining is taking place.
> Robert Love

When you call a function, that function gets a copy of the parameters
passed to it. In-line code accesses those parameters directly. That's
why the spin-lock code, for instance, won't work (with the current macros)
unless they are in-lined.

Dick Johnson
Penguin : Linux version 2.4.18 on an i686 machine (797.90 BogoMips).
Why is the government concerned about the lunatic fringe? Think about it.

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