Sorry, please ignore the patch [trace] 2158a32526: BUG:using_smp_processor_id()in_preemptible
Thanks On Fri, Dec 25, 2020 at 10:24 PM Qiujun Huang <hqjag...@gmail.com> wrote: > > Since commit b6f11df26fdc ("trace: Call tracing_reset_online_cpus before > tracer->init()"), get/put_cpu() are not needed anymore. > We can use smp_processor_id() instead. > > Signed-off-by: Qiujun Huang <hqjag...@gmail.com> > --- > kernel/trace/trace_functions.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/kernel/trace/trace_functions.c b/kernel/trace/trace_functions.c > index c5095dd28e20..e36fbb935017 100644 > --- a/kernel/trace/trace_functions.c > +++ b/kernel/trace/trace_functions.c > @@ -106,8 +106,7 @@ static int function_trace_init(struct trace_array *tr) > > ftrace_init_array_ops(tr, func); > > - tr->array_buffer.cpu = get_cpu(); > - put_cpu(); > + tr->array_buffer.cpu = smp_processor_id(); > > tracing_start_cmdline_record(); > tracing_start_function_trace(tr); > -- > 2.17.1 >