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
..
autoconf.c
bus_machdep.c	Better fix the busdma problem exposed by ATA. With the CMD 646 for	2004-09-10 07:00:28 +00:00
cache.c
cheetah.c
clock.c
counter.c	Set the tc_quality field of the struct before calling tc_init(), since	2004-09-30 14:30:29 +00:00
critical.c
db_disasm.c
db_hwwatch.c
db_interface.c
db_trace.c	Don't include sys/user.h merely for its side-effect of recursively	2004-11-27 06:51:39 +00:00
dump_machdep.c
eeprom_ebus.c	o Sync with the NetBSD mk48txx driver (the result simplyfies some changes	2004-11-17 12:54:12 +00:00
eeprom_sbus.c	o Sync with the NetBSD mk48txx driver (the result simplyfies some changes	2004-11-17 12:54:12 +00:00
eeprom.c	o Sync with the NetBSD mk48txx driver (the result simplyfies some changes	2004-11-17 12:54:12 +00:00
elf_machdep.c
exception.S
gdb_machdep.c	Change gdb_cpu_setreg() to not take the value to which to set the	2004-12-01 06:40:35 +00:00
genassym.c	Remove references to U area and garbage collect includes.	2004-11-20 02:30:59 +00:00
identcpu.c
in_cksum.c
interrupt.S
intr_machdep.c
iommu.c
locore.S
machdep.c	Don't include sys/user.h merely for its side-effect of recursively	2004-11-27 06:51:39 +00:00
mem.c
mp_exception.S
mp_locore.S
mp_machdep.c	Some minor print/panic message cleanups.	2004-09-27 16:06:38 +00:00
nexus.c
ofw_bus.c
ofw_machdep.c
pmap.c	In the common case, pmap_enter_quick() completes without sleeping.	2004-12-15 19:55:05 +00:00
prof_machdep.c
rtc.c	Add a front-end for the `rtc' device which is a MC146818 compatible	2004-11-17 16:41:42 +00:00
rwindow.c	Don't include sys/user.h merely for its side-effect of recursively	2004-11-27 06:51:39 +00:00
sc_machdep.c
spitfire.c
support.S
swtch.S
sys_machdep.c
tick.c
tlb.c
trap.c	Don't include sys/user.h merely for its side-effect of recursively	2004-11-27 06:51:39 +00:00
tsb.c
uio_machdep.c
vm_machdep.c	Don't include sys/user.h merely for its side-effect of recursively	2004-11-27 06:51:39 +00:00