freebsd-skq/sys/sparc64
Alan Cox 85f5b24573 In the common case, pmap_enter_quick() completes without sleeping.
In such cases, the busying of the page and the unlocking of the
containing object by vm_map_pmap_enter() and vm_fault_prefault() is
unnecessary overhead.  To eliminate this overhead, this change
modifies pmap_enter_quick() so that it expects the object to be locked
on entry and it assumes the responsibility for busying the page and
unlocking the object if it must sleep.  Note: alpha, amd64, i386 and
ia64 are the only implementations optimized by this change; arm,
powerpc, and sparc64 still conservatively busy the page and unlock the
object within every pmap_enter_quick() call.

Additionally, this change is the first case where we synchronize
access to the page's PG_BUSY flag and busy field using the containing
object's lock rather than the global page queues lock.  (Modifications
to the page's PG_BUSY flag and busy field have asserted both locks for
several weeks, enabling an incremental transition.)
2004-12-15 19:55:05 +00:00
..
central - Introduce an ofw_bus kobj-interface for retrieving the OFW node and a 2004-08-12 17:41:33 +00:00
compile
conf Add a front-end for the `rtc' device which is a MC146818 compatible 2004-11-17 16:41:42 +00:00
creator - Add missing <sys/module.h>. [1] 2004-07-09 23:12:22 +00:00
ebus Device driver for onboard CS4231 audio controller which is found 2004-10-25 10:29:57 +00:00
fhc - Introduce an ofw_bus kobj-interface for retrieving the OFW node and a 2004-08-12 17:41:33 +00:00
include Change gdb_cpu_setreg() to not take the value to which to set the 2004-12-01 06:40:35 +00:00
isa PNP BIOS devices are fundamentally different than ISA PNP devices. 2004-12-07 05:30:02 +00:00
pci Correct some uses of the wrong members of the *min()/*max()-familiy, e.g. 2004-08-15 21:37:52 +00:00
sbus Fix paths after repocopies done by scottl 2004-11-10 14:09:52 +00:00
sparc64 In the common case, pmap_enter_quick() completes without sleeping. 2004-12-15 19:55:05 +00:00