On Tue, Mar 2, 2021 at 1:02 PM Andy Lutomirski <luto@xxxxxxxxxxxxxx> wrote: > > > > On Mar 2, 2021, at 12:24 PM, Alexei Starovoitov <alexei.starovoitov@xxxxxxxxx> wrote: > > > > On Tue, Mar 2, 2021 at 10:38 AM Andy Lutomirski <luto@xxxxxxxxxx> wrote: > >> > >> Is there something like a uprobe test suite? How maintained / > >> actively used is uprobe? > > > > uprobe+bpf is heavily used in production. > > selftests/bpf has only one test for it though. > > > > Why are you asking? > > Because the integration with the x86 entry code is a mess, and I want to know whether to mark it BROKEN or how to make sure the any cleanups actually work. Any test case to repro the issue you found? Is it a bug or just messy code? Nowadays a good chunk of popular applications (python, mysql, etc) has USDTs in them. Issues reported with bcc: https://github.com/iovisor/bcc/issues?q=is%3Aissue+USDT Similar thing with bpftrace. Both standard USDT and semaphore based are used in the wild. uprobe for containers has been a long standing feature request. If you can improve uprobe performance that would be awesome. That's another thing that people report often. We optimized it a bit. More can be done.
