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* Build on Jeff Roberson's linker-set based dynamic per-CPU allocatorrwatson2009-07-141-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (DPCPU), as suggested by Peter Wemm, and implement a new per-virtual network stack memory allocator. Modify vnet to use the allocator instead of monolithic global container structures (vinet, ...). This change solves many binary compatibility problems associated with VIMAGE, and restores ELF symbols for virtualized global variables. Each virtualized global variable exists as a "reference copy", and also once per virtual network stack. Virtualized global variables are tagged at compile-time, placing the in a special linker set, which is loaded into a contiguous region of kernel memory. Virtualized global variables in the base kernel are linked as normal, but those in modules are copied and relocated to a reserved portion of the kernel's vnet region with the help of a the kernel linker. Virtualized global variables exist in per-vnet memory set up when the network stack instance is created, and are initialized statically from the reference copy. Run-time access occurs via an accessor macro, which converts from the current vnet and requested symbol to a per-vnet address. When "options VIMAGE" is not compiled into the kernel, normal global ELF symbols will be used instead and indirection is avoided. This change restores static initialization for network stack global variables, restores support for non-global symbols and types, eliminates the need for many subsystem constructors, eliminates large per-subsystem structures that caused many binary compatibility issues both for monitoring applications (netstat) and kernel modules, removes the per-function INIT_VNET_*() macros throughout the stack, eliminates the need for vnet_symmap ksym(2) munging, and eliminates duplicate definitions of virtualized globals under VIMAGE_GLOBALS. Bump __FreeBSD_version and update UPDATING. Portions submitted by: bz Reviewed by: bz, zec Discussed with: gnn, jamie, jeff, jhb, julian, sam Suggested by: peter Approved by: re (kensmith)
* Prefer prototypes to k&r definitions.imp2009-03-091-12/+6
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* Start each of the license/copyright comments with /*-imp2005-01-061-1/+1
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* Use __FBSDID().obrien2003-06-101-3/+4
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* Don't assume that pointers are 4 bytes or sizeof(int) in size. This fixestmm2002-06-251-1/+1
| | | | | | the indirection operator ('*') and address examination ('x/a') on big-endian platoforms for which the above is not true, as well as on little-endian platforms if the cut-off bits are not 0.
* Remove __P.alfred2002-03-201-5/+5
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* $Id$ -> $FreeBSD$peter1999-08-281-1/+1
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* Removed unused #includes.bde1997-06-141-2/+1
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* Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are notpeter1997-02-221-1/+1
| | | | ready for it yet.
* Make the long-awaited change from $Id$ to $FreeBSD$jkh1997-01-141-1/+1
| | | | | | | | This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
* Reduced and cleaned up #includes.bde1995-12-101-3/+2
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* Untangled the vm.h include file spaghetti.dg1995-12-071-1/+2
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* Staticized and '#ifdef notused' stuff we don't use.phk1995-11-291-11/+11
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* Completed function declarations and/or added prototypes and/or #includesbde1995-11-241-1/+7
| | | | | | | | | | to get the prototypes. Changed some `int's to `boolean_t's. boolean_t's are ints so they are hard to distinguish from ints. Converted function headers to old-style. ddb is written in K&R1 C except where we broke it.
* Remove trailing whitespace.rgrimes1995-05-301-8/+8
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* Change all #includes to follow the current Berkeley style. Some of thesewollman1994-08-131-5/+5
| | | | | | | | | | | | | | | | | | | | | ``changes'' are actually not changes at all, but CVS sometimes has trouble telling the difference. This also includes support for second-directory compiles. This is not quite complete yet, as `config' doesn't yet do the right thing. You can still make it work trivially, however, by doing the following: rm /sys/compile mkdir /usr/obj/sys/compile ln -s M-. /sys/compile cd /sys/i386/conf config MYKERNEL cd ../../compile/MYKERNEL ln -s /sys @ rm machine ln -s @/i386/include machine make depend make
* Make the LINT kernel compile with -W -Wreturn-type -Wcomment -Werror, andwollman1993-11-251-2/+3
| | | | add same (sans -Werror) to Makefile for future compilations.
* Removed all patch kit headers, sccsid and rcsid strings, put $Id$ in, somergrimes1993-10-161-25/+2
| | | | minor cleanup. Added $Id$ to files that did not have any version info, etc
* Initial import, 0.1 + pk 0.2.4-B1rgrimes1993-06-121-0/+248
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