2021-10-21 03:47:22

by Wangshaobo (bobo)

[permalink] [raw]
Subject: [PATCH] trace/hwlat: Make internal symbol static

The sparse tool complains as follows:

kernel/trace/trace_hwlat.c:82:27: warning: symbol 'hwlat_single_cpu_data' was not declared. Should it be static?
kernel/trace/trace_hwlat.c:83:1: warning: symbol '__pcpu_scope_hwlat_per_cpu_data' was not declared. Should it be static?

This symbol is not used outside of trace_hwlat.c, so this commit
marks it static.

Signed-off-by: Wang ShaoBo <[email protected]>
---
kernel/trace/trace_hwlat.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/trace/trace_hwlat.c b/kernel/trace/trace_hwlat.c
index 1b83d75eb103..263dde9016e4 100644
--- a/kernel/trace/trace_hwlat.c
+++ b/kernel/trace/trace_hwlat.c
@@ -79,8 +79,8 @@ struct hwlat_kthread_data {
int nmi_cpu;
};

-struct hwlat_kthread_data hwlat_single_cpu_data;
-DEFINE_PER_CPU(struct hwlat_kthread_data, hwlat_per_cpu_data);
+static struct hwlat_kthread_data hwlat_single_cpu_data;
+static DEFINE_PER_CPU(struct hwlat_kthread_data, hwlat_per_cpu_data);

/* Tells NMIs to call back to the hwlat tracer to record timestamps */
bool trace_hwlat_callback_enabled;
--
2.25.1