On Tue, Jun 28 2016, Emese Revfy <re.emese@xxxxxxxxx> wrote: > The kernel already has a mechanism to free up code and data memory that > is only used during kernel or module initialization. > This plugin will teach the compiler to find more such code and data that > can be freed after initialization. > It has two passes. The first one tries to find all functions that > can be become __init/__exit. The second one moves string constants > (local variables and function string arguments marked by > the nocapture attribute) only referenced in __init/__exit functions > to the __initconst/__exitconst sections. > It reduces memory usage. This plugin can be useful for embedded systems. May I suggest, as a followup patch, a debug option/plugin parameter to put the strings in a section which will not be reaped after init, but just marked inaccessible, with graceful handling of bad accesses (print a big fat warning, make the page(s) readable, continue)? Rasmus -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
