src/sys/dev/usb/usb_mem.c, branch release/6.2.0

Start each of the license/copyright comments with /*-, minor shuffle of lines

2005-01-06T01:43:34+00:00

When searching for a suitable block of memory on the free list,

2004-08-02T13:59:02+00:00

skip blocks that are too big by a factor of two or greater. This
avoids some cases of extremely inefficient memory use that can occur
when large (e.g. 64k) blocks on the free list get used when allocating
a 4k chunk of 64-byte fragments. Because fragments have their own
free list, the 60k difference got lost forever every time.

Make it easier to run this code on RELENG_4.

2003-10-04T22:13:21+00:00

Submitted by:	luoqi

fix another bus_dma leak due to not having a size param for our bus_dma

2003-07-29T05:07:37+00:00

allocation function.  With this patch, it prevents continous growth of
the devbuf memory pool.

Tested with ssh  dd of=/dev/null < /dev/zero and vmstat -m | grep devbuf

Fix a 64 bit bug lost in the inline warning noise. sizeof is not always

2003-07-22T06:58:04+00:00

an int.  Do not printf() it as though it were.

override the tag. usb_block_allocmem allocates a new tag, which when we

2003-07-21T02:41:01+00:00

go looking for free fragments won't match.  Since we never free this, we
can "throw away" the tag.  This is very dirty, and needs to be reimplemented
properly, but fixes performance problems with uhci.

Also assert that when we overlay a structure on some space, that the
space is large enough for the structure.

make usb bus_dma aware.

2003-07-15T22:42:37+00:00

Reviewed by:	joe among others