Verified:root@localhost:~# modprobe coresight-etm4x
root@localhost:~# uname -r
6.8.0-1022-nvidia-64k
root@localhost:~# perf record -e cs_etm//u ls
dmesg.out dmi.txt lspci.vv.out
perf.data
...
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.218 MB perf.data ]
root@localhost:~#
** Tags removed: verification-needed-noble-linux-nvidia
** Tags added: verification-done-noble-linux-nvidia
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Packages, which is subscribed to linux-nvidia in Ubuntu.
https://bugs.launchpad.net/bugs/2092141
Title:
ETE tracing failure on multi-socket system
Status in linux-nvidia package in Ubuntu:
Invalid
Status in linux-nvidia source package in Noble:
Fix Committed
Bug description:
We got the following error when running perf to trace ETE on multi-socket
systems with more than 108 cpus.
./perf record -e cs_etm//u ls
failed to mmap with 12 (Cannot allocate memory)
The above is per-process monitoring that initiates ETE tracing on all CPUs.
System wide tracing with limited CPUs works, e.g.: perf record -e cs_etm//u
-C 0-108
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