[PATCH] Improve ebitmap scanning (Re: [patch] Tuning avtab to reduce memory usage)

[KaiGai Kohei <kaigai@ak.jp.nec.com>]

Paul Moore wrote:
> On Tuesday, September 11 2007 11:08:44 pm KaiGai Kohei wrote:
>> The attached patch applies the standard bitmap operations
>> for the iteration macro of ebitmap, and enables to improve
>> the performance in AVC-misses case.
> 
> In addition to the code changes to ebitmap_netlbl_{import,export}() you should 
> probably either remove, or preferably update, the comment block in the body 
> of the functions.

I replaced the comment block as follows:

    /* NetLabel's NETLBL_CATMAP_MAPTYPE is defined as an array of u64,
     * however, it is not always compatible with an array of unsigned long
     * in ebitmap_node.
     * In addition, you should pay attention the following implementation
     * assumes unsigned long has a width equal with or less than 64-bit.
     */

BTW, is there any wrapper to copy an array of u64 to/from architecture specific
unsigned long? If so, it will help implement ebitmap_netlbl_{import|export}()
and ebitmap_read() more simply.
-- 
OSS Platform Development Division, NEC
KaiGai Kohei <kaigai@ak.jp.nec.com>

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