On Thu, 10 Sep 2020 19:34:33 -0400 Steven Rostedt <rostedt@xxxxxxxxxxx> wrote: > On Thu, 10 Sep 2020 17:54:54 +0900 > Masami Hiramatsu <mhiramat@xxxxxxxxxx> wrote: > > > Hi, > > > > Here is the 3rd version of the series to improve the boot-time tracing to > > support kretprobe and tracing_on option. Previous version is here: > > > > https://lkml.kernel.org/r/159894698993.1478826.2813843560314595660.stgit@devnote2 > > > > This version adds uprobe %return suffix support ([5/8]) and the testcases > > ([8/8]), and update kprobe %suffix support([4/8]) and the uprobe event > > document([6/8]). > > > > > > The combination of tracing_on and kretprobe allows us to trace events > > while a specific function call period. For example, the below bootconfig > > will make a function callgraph in the pci_proc_init() function at boot > > time. > > > > ftrace { > > tracing_on = 0 # off at start > > tracer = function_graph > > event.kprobes { > > start_event { > > probes = "pci_proc_init" > > actions = "traceon" > > } > > end_event { > > probes = "pci_proc_init%return" > > actions = "traceoff" > > } > > } > > } > > > > Here is the example output; > > > > [..] > > Hi Masami, > > This looks really great! I just got back from a 10 day holiday, and I'm > drowning in "catch-up". I plan on looking at all this relatively soon > (in a week or two?). I just don't want you to think I'm ignoring this. Hi Steve, Thanks, I hope you enjoyed the holiday! BTW, this series includes some document update and testcases. Since we can not decouple these updates, I think it is better you to pull the series. Regards, -- Masami Hiramatsu <mhiramat@xxxxxxxxxx>
