Hi Tim, Sorry to respond so late to this, hadn't seen your question earlier and have been bogged down with holidays. I've not seen -g dwarf work yet in a stock ubuntu kernel, but have seen it work in custom kernel compiles. Unfortunately I don't have any raring machines handy at the moment to verify jtaylor's observation that it worked in the stock distribution there.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1248289 Title: Missing libunwind support in perf Status in “linux” package in Ubuntu: In Progress Bug description: Hi, I'm trying to use perf's libunwind support in 13.04 with kernel 3.11.0-12-generic on amd64. Typically you can do this by using the "-g dwarf" flag, but it appears the perf command included in linux- tools-3.11.0-12-generic was not compiled with libunwind. This may be as simple as the build machine didn't have libunwind installed. Having dwarf support in perf with default Ubuntu kernels would be very useful as it provides a way to get profiling information when -fomitframepointer is used. Relevant upstream code: https://github.com/torvalds/linux/blob/v3.11/tools/perf/Makefile#L459 https://github.com/torvalds/linux/blob/v3.11/tools/perf/builtin-record.c#L758 Let me know if I can provide any other information. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1248289/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp