[PATCH v2 4/5] xen/sched: credit: Fix MISRA C 2012 Rule 8.7 violation

[Xenia Ragiadakou <burzalodowa@xxxxxxxxx>]

The per-cpu variable last_tickle_cpu is referenced only in credit.c.
Change its linkage from external to internal by adding the storage-class
specifier static to its definitions.

Also, this patch aims to resolve indirectly a MISRA C 2012 Rule 8.4 violation
warning.

Signed-off-by: Xenia Ragiadakou <burzalodowa@xxxxxxxxx>
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
Changes in v2:
- replace the phrase "This patch aims to resolve indirectly a MISRA C 2012
  Rule 8.4 violation warning." with "Also, this patch aims to resolve
  indirectly a MISRA C 2012 Rule 8.4 violation warning."

 xen/common/sched/credit.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/common/sched/credit.c b/xen/common/sched/credit.c
index 4d3bd8cba6..47945c2834 100644
--- a/xen/common/sched/credit.c
+++ b/xen/common/sched/credit.c
@@ -348,7 +348,7 @@ static void burn_credits(struct csched_unit *svc, s_time_t 
now)
 static bool __read_mostly opt_tickle_one_idle = true;
 boolean_param("tickle_one_idle_cpu", opt_tickle_one_idle);
 
-DEFINE_PER_CPU(unsigned int, last_tickle_cpu);
+static DEFINE_PER_CPU(unsigned int, last_tickle_cpu);
 
 static inline void __runq_tickle(const struct csched_unit *new)
 {
-- 
2.34.1