On Thu, Dec 29, 2005 at 04:35:29PM +0100, Adrian Bunk wrote: > > You describe a nice utopia where only the most essential functions are > > inlined.. but so far that hasn't worked out all that well ;) Turning > > "inline" back into the hint to the compiler that the C language makes it > > is maybe a cop-out, but it's a sustainable approach at least. > >... > > But shouldn't nowadays gcc be able to know best even without an "inline" > hint? Only for static functions (and in -funit-at-a-time mode). Anything else would require full IMA over the whole kernel and we aren't there yet. So inline hints are useful. But most of the inline keywords in the kernel really should be that, hints, because e.g. while it can be beneficial to inline something on one arch, it may be not beneficial on another arch, depending on cache sizes, number of general registers available to the compiler, register preassure, speed of the call/ret pair, calling convention and many other factors. Jakub - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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