[PATCH -next] percpu: make symbol 'pcpu_free_slot' static

[Wei Yongjun]

The sparse tool complains as follows:

mm/percpu.c:138:5: warning:
 symbol 'pcpu_free_slot' was not declared. Should it be static?

This symbol is not used outside of percpu.c, so marks it static.

Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
---
 mm/percpu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/percpu.c b/mm/percpu.c
index a257c3efdf18..73c249f3b6a3 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -135,7 +135,7 @@ static int pcpu_unit_size __ro_after_init;
 static int pcpu_nr_units __ro_after_init;
 static int pcpu_atom_size __ro_after_init;
 int pcpu_nr_slots __ro_after_init;
-int pcpu_free_slot __ro_after_init;
+static int pcpu_free_slot __ro_after_init;
 int pcpu_sidelined_slot __ro_after_init;
 int pcpu_to_depopulate_slot __ro_after_init;
 static size_t pcpu_chunk_struct_size __ro_after_init;