On Sat, Jun 27, 2020 at 10:38 PM Changbin Du <changbin...@gmail.com> wrote: > > This adds support to display call trace for function tracer. To do this, > just specify a '--func-call-graph' option.
What if it's used with -G option? Also it might be used only with the -T option.. How about showing a warning if it's missing.. ? Thanks Namhyung > > $ sudo perf ftrace -T vfs_read --func-call-graph > iio-sensor-prox-855 [003] 6168.369657: vfs_read <-ksys_read > iio-sensor-prox-855 [003] 6168.369677: <stack trace> > => vfs_read > => ksys_read > => __x64_sys_read > => do_syscall_64 > => entry_SYSCALL_64_after_hwframe > ... > > Signed-off-by: Changbin Du <changbin...@gmail.com>
