Re: [PATCH 06/19] perf ftrace: add support for trace option sleep-time

[Changbin Du]

On Sun, May 31, 2020 at 02:56:41PM +0900, Namhyung Kim wrote:
> On Thu, May 21, 2020 at 6:01 AM Arnaldo Carvalho de Melo
> <acme@xxxxxxxxxx> wrote:
> >
> > Em Sun, May 10, 2020 at 11:06:15PM +0800, Changbin Du escreveu:
> > > This adds an option '--nosleep-time' which allow us only to measure
> > > on-CPU time. This option is function_graph tracer only.
> >
> > This seems, for now, very specific to the function_graph tracer, so
> > perhaps we should have a:
> >
> >         --function_graph_opts nosleep-time,other,another,etc
> >
> > ?
> 
> Agreed.  Also I don't want to add an option in a negative form
> as it's confusing.  Actually, our option parser can recognize
> --no-xxx form automatically so adding a positive option (--xxx)
> can handle that too.
>
Agree. And for the name, maybe we can align to original trace options.

root@WRT-WX9:/sys/kernel/debug/tracing# cat trace_options
print-parent
nosym-offset
nosym-addr
noverbose
noraw
nohex
nobin
noblock
trace_printk
annotate
nouserstacktrace
nosym-userobj
noprintk-msg-only
context-info
nolatency-format
record-cmd
norecord-tgid
overwrite
nodisable_on_free
irq-info
markers
noevent-fork
function-trace
nofunction-fork
nodisplay-graph
nostacktrace
notest_nop_accept
notest_nop_refuse


> Thanks
> Namhyung

-- 
Cheers,
Changbin Du