Re: [PATCH v5] arm64: implement ftrace with regs

[Amit Daniel Kachhap]

Hi,
On Sat, Dec 15, 2018 at 6:14 PM Torsten Duwe <duwe@xxxxxx> wrote:
>
> On Fri, 14 Dec 2018 21:45:03 +0530
> Amit Daniel Kachhap <amit.kachhap@xxxxxxx> wrote:
>
> > Sorry I didn't mention my environment. I am using 4.20-rc3 and it has
> > all the above 8 extra patches
> > mentioned by you.
>
> So that should be fine.
ok thanks.
>
> > I read your change description in v3 patchset. You had mentioned there
> > that graph caller
> > is broken.
>
> No, actually I thought I had fixed that for v4. Would you care to show
> us an actual error message or some symptom?
There is no error message or crash but no useful output like below,

/sys/kernel/tracing # echo wake_up_process > set_graph_function
/sys/kernel/tracing # echo function_graph > current_tracer
/sys/kernel/tracing # cat trace
# tracer: function_graph
#
# CPU  DURATION                  FUNCTION CALLS
# |     |   |                     |   |   |   |

//Amit
>
>         Torsten