Just a newbie question: __get_free_pages() - how does it worked? It is really just my guess - attempted tracing really did not answer all the following question - as it was just too deep.... first, it should attempt to allocate space from physical mem...and it uses max_pfn as the mark to guide it. correct? question: multiple processor may be attempting to allocate / call __get_free_pages() at the same time - and uses max_pfn as the guide on the maximum available physical frames. so how is the coordination done? (if it is a lock, what is the name of the global lock?) On the other hand, because i cannot find the link between max_pfn and __get_free_pages() - so question is how does __get_free_pages() know where the max pfn it can used for memory allocation? next, it should then update the pagetable entries - right? PAE and non-PAE will have different path. correct? roughly where are these done in kernel? essentially...it should be marking the pagetable entries for the block of memory as "notfree" - right? what is the function used? thanks. -- Regards, Peter Teoh -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
