On Thu, 13 Jan 2022 13:27:34 +0100 Jiri Olsa <jolsa@xxxxxxxxxx> wrote: > On Wed, Jan 12, 2022 at 05:01:15PM +0100, Jiri Olsa wrote: > > On Wed, Jan 12, 2022 at 11:02:46PM +0900, Masami Hiramatsu wrote: > > > Hi Jiri and Alexei, > > > > > > Here is the 2nd version of fprobe. This version uses the > > > ftrace_set_filter_ips() for reducing the registering overhead. > > > Note that this also drops per-probe point private data, which > > > is not used anyway. > > > > > > This introduces the fprobe, the function entry/exit probe with > > > multiple probe point support. This also introduces the rethook > > > for hooking function return as same as kretprobe does. This > > > > nice, I was going through the multi-user-graph support > > and was wondering that this might be a better way > > > > > abstraction will help us to generalize the fgraph tracer, > > > because we can just switch it from rethook in fprobe, depending > > > on the kernel configuration. > > > > > > The patch [1/8] and [7/8] are from your series[1]. Other libbpf > > > patches will not be affected by this change. > > > > I'll try the bpf selftests on top of this > > I'm getting crash and stall when running bpf selftests, > the fprobe sample module works fine, I'll check on that Hmm, would you mean tools/testing/selftests/bpf/prog_tests/ ? Let me check it too. Thank you, -- Masami Hiramatsu <mhiramat@xxxxxxxxxx>
