CALL FOR TESTERS! [Re: 6.2 SHOWSTOPPER - em completely unusable on 6.2]

[O. Hartmann]

Scott Long wrote:
> All,
>
> Attached is my first cut at addressing the problems described in this 
> thread.  As I discussed earlier, the VM syncer thread is likely starving
> the USB interrupt thread.  This causes the shared usb+network 
> interrupt to remain masked, preventing network interrupts from being 
> delivered,
> and thus triggering watchdog timeouts.
>
> This patch only addresses the USB driver.  If your network card is 
> sharing an interrupt with something other than (or additional to) USB,
> this might not work for you.  Also, this patch is just a very rough
> proof-of-concept and is not meant for production use.  But I'd like to
> get feedback now before I spend more time on this.  If this works then
> I'll clean it up and make it suitable for the release, and I'll look at
> some of the other drivers like ichsmb.
>
> If this is to be fixed for 6.2, I need lots of feedback ASAP.  So please
> do not be shy =-)  The patch is at:
>
> http://people.freebsd.org/~scottl/usb_fastintr.diff
>
> Scott
>
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patch does not work on my box:

cc -c -O2 -frename-registers -pipe -fno-strict-aliasing -march=athlon64 
-Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes  
-Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual  
-fformat-extensions -std=c99  -nostdinc -I-  -I. -I/usr/src/sys 
-I/usr/src/sys/contrib/altq -I/usr/src/sys/contrib/ipfilter 
-I/usr/src/sys/contrib/pf -I/usr/src/sys/contrib/dev/ath 
-I/usr/src/sys/contrib/dev/ath/freebsd -I/usr/src/sys/contrib/ngatm 
-I/usr/src/sys/dev/twa -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include 
opt_global.h -fno-common -finline-limit=8000 --param 
inline-unit-growth=100 --param large-function-growth=1000  
-mcmodel=kernel -mno-red-zone  -mfpmath=387 -mno-sse -mno-sse2 -mno-mmx 
-mno-3dnow  -msoft-float -fno-asynchronous-unwind-tables -ffreestanding 
-Werror  /usr/src/sys/dev/usb/usb.c
/usr/src/sys/dev/usb/usb.c: In function `usb_attach':
/usr/src/sys/dev/usb/usb.c:282: error: `usb_intr_task' undeclared (first 
use in this function)
/usr/src/sys/dev/usb/usb.c:282: error: (Each undeclared identifier is 
reported only once
/usr/src/sys/dev/usb/usb.c:282: error: for each function it appears in.)
/usr/src/sys/dev/usb/usb.c: At top level:
/usr/src/sys/dev/usb/usb.c:863: warning: 'usb_intr_task' defined but not 
used
*** Error code 1

Stop in /usr/obj/usr/src/sys/THOR.
*** Error code 1

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.


Uname:

FreeBSD my.box.org 6.2-PRERELEASE FreeBSD 6.2-PRERELEASE #85: Thu Sep 28 
17:09:24 UTC 2006     root at my.box.org:/usr/obj/usr/src/sys/THOR  amd64