jtaylor: Yep, this is saucy. Just upgraded in fact for the newer stock kernel and hoping that dwarf support would be there. :)
I work on Ceph at Inktank and there are times when we are debugging customer clusters with stock kernels where having unwind support in perf would be very useful. It would be especially nice if we could get it working before 14.04 lands as I expect a lot of people will be standardizing on that in the future. -- 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: Triaged 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