[for-next][PATCH 03/15] tracing: Remove get/put_cpu() from function_trace_init

Steven Rostedt
2021-02-03T16:07:08Z

From: Qiujun Huang <hqjagain@gmail.com>

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>
---
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..f67aec5bb771 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 = raw_smp_processor_id();

tracing_start_cmdline_record();
tracing_start_function_trace(tr);
--
2.29.2