tracing: Remove get/put_cpu() from function_trace_init

Since commit b6f11df26fdc ("trace: Call tracing_reset_online_cpus before
tracer->init()"), get/put_cpu() are not needed anymore.
We can use raw_smp_processor_id() instead.

Link: https://lkml.kernel.org/r/20201230140521.31920-1-hqjagain@gmail.com
Signed-off-by: Qiujun Huang <hqjagain@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

diff --git a/kernel/trace/trace_functions.c b/kernel/trace/trace_functions.c
index c5095dd..f67aec5 100644 (file)
--- 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 = raw_smp_processor_id();
 
        tracing_start_cmdline_record();
        tracing_start_function_trace(tr);