On Sat, Dec 23, 2017 at 03:39:53PM +0100, Otto Moerbeek wrote:
> Hi,
>
> Largely cleanup and small optimizations:
>
> - remove over-initializaition of chunks: canary is set only once,
> other fields only as-needed.
> - remember position of last free bit in chunk_info, so we can start at
> the proper spot the next time. To be able to do this a field was added
> to chunk_info. To make room, the chunk_info canary is now only a
> short. This still detects acccidental overflows.
> - the code that scans for a free bit in chunk_info is made more clear
> and a bit faster.
> - for the page cache, also rememberthe position to continue scanning. Only
> randomize when putting things into the cache.
>
> reviews and tests appreciated,
btw, i realized the init of most the other fields of struct chunk_info
can be also done exactly once after allocation, no need to redo them
in omalloc_make_chunks(). After this is in, I'll work on that,
-Otto
