"for specific platform only" programs are to be included
- add pdisk to the list of specially handled programs
- use ../common/mtree.dot instead of local duplicate
sync that descriptor with PREREAD to make sure that it is evicted
from the data cache. From Allen Briggs.
* With the above bug fixed, stop using BUS_DMA_COHERENT, resulting in
a fairly decent performance improvement on systems where BUS_DMA_COHERENT
causes descriptors to be accessed uncached (most painful in wm_start()).
Change the bus_dmamap_sync() macro to test the ops argument against pre-
and post- constants. The compiler will optimize out dead code because
of the constants. Since post- operations are not needed on ARM (except
for ISA bounce buffers), this eliminate a large number of function calls
which are noops, each of which cost at least 6 cycles just in the call
and return overhead (not to mention whatever other useless work the
compiler decides to do in the callee).
load f/w images > 0x7fff words), set ISP_FW_ATTR_SCCLUN. We explicitly
don't believe we can find attributes if f/w is < 1.17.0, so we have to
set SCCLUN for the 1.15.37 f/w we're using manually- otherwise every
target will replicate itself across all 16 supported luns for non-SCCLUN
f/w.
* Save an instruction in the transition from idle to have-process-to-
switch-to, and eliminate two instructions that cause datadep-stalls
on StrongARM And XScale (one in each idle block).
* Rearrange some other instructions to avoid datadep-stalls on StrongARM
and XScale.
* Since cpu_do_powersave == 0 is by far the common case, avoid a
pipeline flush by reordering the two idle blocks.
it in pmap_activate(). Instead, let's leave it empty and let pages be
faulted into it on demand. This improves the context switch latency
somewhat, at least for small processes.
