On Thursday 10 April 2008 01:08:41 Mathieu Desnoyers wrote:
Wouldn't it be simlpler to roll DISABLE_IMMEDIATE into this?
ie.
default y
depends on HAVE_IMMEDIATE
bool "Immediate value optimization" if EMBEDDED
help
Immediate values are used as read-mostly variables that are rarely
updated. They use code patching to modify the values inscribed in the
instruction stream. It provides a way to save precious cache lines
that would otherwise have to be used by these variables.
It consumes slightly more memory and requires to modify the instruction
stream each time a variable is updated. Should really be disabled for
embedded systems with read-only text.
Cheers,
Rusty.
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