On Wed, Nov 21, 2018 at 07:28:01PM -0500, Steven Rostedt wrote:
>
> [ ... snip ... ]
>
> Feel free to test this! I'll be pushing this to linux-next and let it
> sit there a week or so before pushing it to Linus.
>
> git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
> ftrace/urgent
Hi Steve,
With your ftrace/urgent branch linked above, if I try a quick
function_graph test like the following:
SYSFS=/sys/kernel/debug/tracing
echo 0 > "$SYSFS/tracing_on"
echo cmdline_proc_show > "$SYSFS/set_graph_function"
echo function_graph > "$SYSFS/current_tracer"
echo 1 > "$SYSFS/tracing_on"
I see a bunch of scheduler interrupt functions in the trace/trace_pipe
without even invoking cmdline_proc_show().
This tests works as expected with Linux 4.20-rc3 though:
% cat /sys/kernel/debug/tracing/trace_pipe
2) | cmdline_proc_show() {
2) 0.320 us | seq_puts();
2) 0.030 us | seq_putc();
2) 1.352 us | }
Operator error, or did the patchset break something?
Regards,
-- Joe
