John Baldwin 4e7f640dfb Optimize sx locks to use simple atomic operations for the common cases of ... obtaining and releasing shared and exclusive locks. The algorithms for manipulating the lock cookie are very similar to that rwlocks. This patch also adds support for exclusive locks using the same algorithm as mutexes. A new sx_init_flags() function has been added so that optional flags can be specified to alter a given locks behavior. The flags include SX_DUPOK, SX_NOWITNESS, SX_NOPROFILE, and SX_QUITE which are all identical in nature to the similar flags for mutexes. Adaptive spinning on select locks may be enabled by enabling the ADAPTIVE_SX kernel option. Only locks initialized with the SX_ADAPTIVESPIN flag via sx_init_flags() will adaptively spin. The common cases for sx_slock(), sx_sunlock(), sx_xlock(), and sx_xunlock() are now performed inline in non-debug kernels. As a result, <sys/sx.h> now requires <sys/lock.h> to be included prior to <sys/sx.h>. The new kernel option SX_NOINLINE can be used to disable the aforementioned inlining in non-debug kernels. The size of struct sx has changed, so the kernel ABI is probably greatly disturbed. MFC after: 1 month Submitted by: attilio Tested by: kris, pjd		2007-03-31 23:23:42 +00:00
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defines
files	Complete removal of uipc_socket2.c by moving the last few functions to	2007-03-26 08:59:03 +00:00
files.amd64	opt_ah.h ends up copied into a kernelcompile directory in some	2006-12-18 05:45:23 +00:00
files.arm	opt_ah.h ends up copied into a kernelcompile directory in some	2006-12-18 05:45:23 +00:00
files.i386	opt_ah.h ends up copied into a kernelcompile directory in some	2006-12-18 05:45:23 +00:00
files.ia64	Move "device splash" back to MI NOTES and "files", it's MI.	2006-10-23 13:23:14 +00:00
files.pc98	opt_ah.h ends up copied into a kernelcompile directory in some	2006-12-18 05:45:23 +00:00
files.powerpc	Evolve the ctlreq interface added to geom_gpt into a generic	2007-02-07 18:55:31 +00:00
files.sparc64	Rototill the sparc64 nexus(4) (actually this brings in the code the	2007-03-07 21:13:51 +00:00
files.sun4v	build new mdesc file	2006-12-18 07:26:35 +00:00
kern.mk	Fix module loading for sparc on machines with greater than 1GB of RAM	2006-11-26 23:16:46 +00:00
kern.post.mk	If KERNEL_EXTRA is defined, make kernel-all target depend on it.	2007-03-23 21:55:59 +00:00
kern.pre.mk	Fixed high resolution profiling on arches that support it (amd64 and	2006-10-26 15:16:43 +00:00
kmod_syms.awk
kmod.mk	Overhaul driver/subsystem api's:	2007-03-21 03:42:51 +00:00
ldscript.amd64
ldscript.arm	Create a non-elf pure binary version of the kernel as well.	2005-11-24 02:25:49 +00:00
ldscript.i386
ldscript.ia64
ldscript.powerpc
ldscript.sparc64
Makefile.amd64	Version 600004 is better than 700000 given other changes that are in	2005-11-28 17:51:31 +00:00
Makefile.arm	Only use -mno-apcs-frame if DDB is not in the kernel, as it prevent the	2006-07-24 22:09:47 +00:00
Makefile.i386	Set MACHINE to i386(pc98). This fixes cross-building.	2006-01-29 03:32:19 +00:00
Makefile.ia64	Version 600004 is better than 700000 given other changes that are in	2005-11-28 17:51:31 +00:00
Makefile.pc98	Set MACHINE to i386(pc98). This fixes cross-building.	2006-01-29 03:32:19 +00:00
Makefile.powerpc	Version 600004 is better than 700000 given other changes that are in	2005-11-28 17:51:31 +00:00
Makefile.sparc64	Version 600004 is better than 700000 given other changes that are in	2005-11-28 17:51:31 +00:00
Makefile.sun4v	placate Grim Reaper with sun4v support	2006-10-05 06:14:28 +00:00
makeLINT.mk
makeLINT.sed
newvers.sh	Pad the strings sccs[], version[], and osrelease[] up to a minimum of	2005-08-19 01:49:15 +00:00
NOTES	Optimize sx locks to use simple atomic operations for the common cases of	2007-03-31 23:23:42 +00:00
options	Optimize sx locks to use simple atomic operations for the common cases of	2007-03-31 23:23:42 +00:00
options.amd64	Remove sio(4) and related options from MI files to amd64, i386	2006-07-29 18:38:54 +00:00
options.arm	Add two new options, FLASHADDR, which defines the address the flash is	2007-02-19 01:03:08 +00:00
options.i386	Remove sio(4) and related options from MI files to amd64, i386	2006-07-29 18:38:54 +00:00
options.ia64	o Move ISA specific code from ppc.c to ppc_isa.c -- a bus front-	2006-04-24 23:31:51 +00:00
options.pc98	Remove sio(4) and related options from MI files to amd64, i386	2006-07-29 18:38:54 +00:00
options.powerpc
options.sparc64	- In sunkbd_probe_keyboard() don't bother to determine the keyboard layout	2006-11-02 00:01:15 +00:00
options.sun4v	Remove remnants from the sparc64 origin of this file and which are	2007-01-19 12:22:50 +00:00
systags.sh	Use a simpler way to reach the <machine> include dir, which should	2005-12-03 21:37:54 +00:00