DragonFly commits List (threaded) for 2008-03
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cvs commit: src/sys/platform/vkernel/conf files src/sys/platform/vkernel/i386 exception.c src/sys/platform/vkernel/include cothread.h md_var.h src/sys/platform/vkernel/platform cothread.c machintr.c src/sys/dev/virtual/disk vdisk.c
dillon 2008/03/19 19:14:56 PDT
DragonFly src repository
Modified files:
sys/platform/vkernel/conf files
sys/platform/vkernel/i386 exception.c
sys/platform/vkernel/include md_var.h
sys/platform/vkernel/platform machintr.c
sys/dev/virtual/disk vdisk.c
Added files:
sys/platform/vkernel/include cothread.h
sys/platform/vkernel/platform cothread.c
Log:
Improve vkernel support.
* Add a new cothread API for vkernel drivers. This creates real threads
to act as DMA engines for I/O. These threads operate OUTSIDE the
vkernel's cpu abstraction and thus work with UP builds or SMP builds with
-n 1.
* Asynchronize the virtual disk (vkd). VKD now queues I/O to a cothread
which runs it and then generates a signal to the vkernel's cpu 0 to run
the virtual device's 'interrupt' function.
* The new cothread code works better then the kqueue code because it allows
I/O's to be ganged together for bulk operation without causing a signal
for each one. The kqueue code is still used by VKE but should
be considered obsolete.
Revision Changes Path
1.21 +1 -0 src/sys/platform/vkernel/conf/files
1.10 +18 -0 src/sys/platform/vkernel/i386/exception.c
1.24 +2 -0 src/sys/platform/vkernel/include/md_var.h
1.16 +13 -0 src/sys/platform/vkernel/platform/machintr.c
1.8 +57 -45 src/sys/dev/virtual/disk/vdisk.c
http://www.dragonflybsd.org/cvsweb/src/sys/platform/vkernel/conf/files.diff?r1=1.20&r2=1.21&f=u
http://www.dragonflybsd.org/cvsweb/src/sys/platform/vkernel/i386/exception.c.diff?r1=1.9&r2=1.10&f=u
http://www.dragonflybsd.org/cvsweb/src/sys/platform/vkernel/include/md_var.h.diff?r1=1.23&r2=1.24&f=u
http://www.dragonflybsd.org/cvsweb/src/sys/platform/vkernel/platform/machintr.c.diff?r1=1.15&r2=1.16&f=u
http://www.dragonflybsd.org/cvsweb/src/sys/dev/virtual/disk/vdisk.c.diff?r1=1.7&r2=1.8&f=u
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