Kernel build fails on ARM: Cannot fork: Cannot allocate memory
hiren panchasara
hiren.panchasara at gmail.com
Tue Jul 2 00:57:34 UTC 2013
On Mon, Jun 24, 2013 at 8:23 PM, Jeff Roberson <jroberson at jroberson.net> wrote:
<skip>
>
> Would any of the arm users be interested in testing a larger patch that
> changes the way the kernel allocations KVA? It also has some UMA code that
> lessens kernel memory utilization.
>
> http://people.freebsd.org/~jeff/vmem.diff
>
> Any reports would be helpful. Is there any ETA on getting stack tracing
> fixed? I suspect the pmap recursion encountered with Kostik's patch exist
> in the current kernel. The other changes in this patch my fix that as well.
I know mine is not a failed case but I still went ahead and gave your
diffs a whirl.
I have pretty much working beaglebone black running 10.0-CURRENT
FreeBSD 10.0-CURRENT #0 r252049M:
Applied your patch and rebuilt the kernel. Everything seem sane right now.
For reference:
root at beaglebone:~ # cc -v
FreeBSD clang version 3.3 (tags/RELEASE_33/final 183502) 20130610
Target: armv6-unknown-freebsd10.0
Thread model: posix
root at beaglebone:~ # df -k
Filesystem 1024-blocks Used Avail Capacity Mounted on
/dev/mmcsd0s2a 13129204 6459024 5619844 53% /
devfs 1 1 0 100% /dev
/dev/mmcsd0s1 2020 660 1359 33% /boot/msdos
/dev/md0 29340 24 26972 0% /tmp
/dev/md1 14492 64 13272 0% /var/log
/dev/md2 4508 8 4140 0% /var/tmp
root at beaglebone:~ #
root at beaglebone:~ # sysctl hw.physmem
hw.physmem: 536870912
root at beaglebone:~ # dmesg | less
KDB: debugger backends: ddb
KDB: current backend: ddb
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FreeBSD 10.0-CURRENT #0: Wed Jun 26 09:51:05 UTC 2013
root at beaglebone:/usr/obj/usr/src/sys/BEAGLEBONE arm
FreeBSD clang version 3.3 (tags/RELEASE_33/final 183502) 20130610
WARNING: WITNESS option enabled, expect reduced performance.
CPU: Cortex A8-r3 rev 2 (Cortex-A core)
Supported features: ARM_ISA THUMB2 JAZELLE THUMBEE ARMv4 Security_Ext
WB disabled EABT branch prediction enabled
LoUU:2 LoC:2 LoUIS:1
Cache level 1:
32KB/64B 4-way data cache WT WB Read-Alloc
32KB/64B 4-way instruction cache Read-Alloc
Cache level 2:
256KB/64B 8-way unified cache WT WB Read-Alloc Write-Alloc
real memory = 536870912 (512 MB)
avail memory = 511758336 (488 MB)
Texas Instruments AM3358 Processor, Revision ES1.1
Anything in particular you want me to test other than, it seems to be
working fine for me?
Thanks,
Hiren
>
> Thanks,
> Jeff
>
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