Messages in this thread | | | Date | Tue, 10 Oct 2006 13:03:56 -0700 | From | Jeremy Fitzhardinge <> | Subject | Re: [PATCH] Fix WARN_ON / WARN_ON_ONCE regression |
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Steven Rostedt wrote: > Holy crap! I wonder where else in the kernel gcc is doing this. (of > course I'm using gcc4 so I don't know). Is there another gcc attribute > to actually tell gcc that a variable is really mostly read only (besides > placing it in a mostly read only elf section)? >
That would be nice, but I don't know of one (apart from "volatile", which has its own downsides). Once could imagine an annotation which makes gcc consider writes to the variable relatively expensive, so that it avoids generating unnecessary/excessive writes.
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