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
..
apic_vector.s	Avoid more than two pending IPI interrupt vectors per local APIC	2004-12-07 20:15:01 +00:00
atomic.c	Fix copyright comment & FBSDID style nits.	2003-08-25 09:48:48 +00:00
autoconf.c	cosmetic changes.	2004-11-10 12:28:06 +00:00
bios.c	PNP BIOS devices are fundamentally different than ISA PNP devices.	2004-12-07 05:30:02 +00:00
bioscall.s
busdma_machdep.c	Don't flag alignment constraints as a reason for bouncing. This fixes the	2004-11-29 14:49:27 +00:00
critical.c	Include <machine/psl.h> for the definition of PSL_I instead of depending	2004-03-05 14:23:13 +00:00
db_disasm.c	Fix copyright comment & FBSDID style nits.	2003-08-25 09:48:48 +00:00
db_interface.c	Mega update for the KDB framework: turn DDB into a KDB backend.	2004-07-10 23:47:20 +00:00
db_trace.c	- Change the ddb paging "support" to use a variable (db_lines_per_page) to	2004-11-01 22:15:15 +00:00
dump_machdep.c	Fix copyright comment & FBSDID style nits.	2003-08-25 09:48:48 +00:00
elan-mmcr.c	Add zero flags argument to sysctl calls.	2004-10-12 07:59:02 +00:00
elf_machdep.c	Add __elfN(dump_thread). This function is called from __elfN(coredump)	2004-08-11 02:35:06 +00:00
exception.s	MFamd64:	2004-05-26 07:43:41 +00:00
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
geode.c	Do the dreaded s/dev_t/struct cdev */	2004-06-16 09:47:26 +00:00
i686_mem.c	Trim a few things from the dmesg output and stick them under bootverbose to	2004-07-01 07:46:29 +00:00
identcpu.c	Move the author's copyright notice to match the initial LongRun import	2004-12-12 05:53:57 +00:00
in_cksum.c	Remove advertising clause from University of California Regent's	2004-04-07 20:46:16 +00:00
initcpu.c	Update a comment.	2003-11-10 15:48:30 +00:00
intr_machdep.c	Allow fast interrupts to cause preemption.	2004-12-06 22:25:01 +00:00
io_apic.c	Optimize intr_execute_handlers() by combining the pic_disable_source() and	2004-08-02 15:31:10 +00:00
io.c	Break out the MI part of the /dev/[k]mem and /dev/io drivers into	2004-08-01 11:40:54 +00:00
k6_mem.c	Fix copyright comment & FBSDID style nits.	2003-08-25 09:48:48 +00:00
legacy.c	NEC PC-98 machines do not have and cannot have an EISA bus. They have	2004-12-07 15:36:19 +00:00
local_apic.c	Correct bounds check in lapic_create().	2004-07-14 18:12:15 +00:00
locore.s	U areas are going away, so don't allocate one for process 0.	2004-11-20 02:29:25 +00:00
longrun.c	Move the author's copyright notice to match the initial LongRun import	2004-12-12 05:53:57 +00:00
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	Fix module builds for i386 and amd64.	2004-08-04 18:30:31 +00:00
mp_clock.c	Add missing #include <sys/module.h>	2004-05-30 20:34:58 +00:00
mp_machdep.c	Avoid more than two pending IPI interrupt vectors per local APIC	2004-12-07 20:15:01 +00:00
mp_watchdog.c	Preemptive anti-footshooting: cause a #error if MP_WATCHDOG is compiled	2004-08-15 20:32:40 +00:00
mpboot.s	New i386 SMP code:	2003-11-03 22:32:04 +00:00
mptable_pci.c	Use a private attach method for the MP Table host-PCI bridge driver rather	2004-05-03 14:49:10 +00:00
mptable.c	Improve the panic message for a busted MP table with conflicting entries	2004-09-24 18:42:54 +00:00
nexus.c	Print flags in the nexus for child devices.	2004-10-14 22:36:47 +00:00
p4tcc.c	o Fix whitespace bug introduced in the previous commit.	2004-08-23 10:09:29 +00:00
perfmon.c	Do the dreaded s/dev_t/struct cdev */	2004-06-16 09:47:26 +00:00
pmap.c	In the common case, pmap_enter_quick() completes without sleeping.	2004-12-15 19:55:05 +00:00
support.s	Initiate deorbit burn sequence for 80386 support in FreeBSD: Remove	2004-11-16 20:42:32 +00:00
swtch.s	Fix a typo in a comment.	2004-07-15 16:37:48 +00:00
symbols.raw	Remove atdevbase and replace it's remaining uses with direct references to	2004-06-10 20:31:00 +00:00
sys_machdep.c	Don't include sys/user.h merely for its side-effect of recursively	2004-11-27 06:51:39 +00:00
trap.c	Initiate deorbit burn sequence for 80386 support in FreeBSD: Remove	2004-11-16 20:42:32 +00:00
tsc.c	Change all SYSCTLS which are readonly and have a related TUNABLE	2003-10-21 18:28:36 +00:00
uio_machdep.c	Properly free the temporary sf_buf in uiomove_fromphys() if a copyin or	2004-08-21 18:50:34 +00:00
vm86.c	Don't include sys/user.h merely for its side-effect of recursively	2004-11-27 06:51:39 +00:00
vm86bios.s	- Add support for PAE and more than 4 gigs of ram on x86, dependent on the	2003-03-30 05:24:52 +00:00
vm_machdep.c	If the parent process has the trap bit set (i.e. a debugger had single	2004-12-08 19:03:55 +00:00