[xen staging] sched/credit: fix MISRA C 2012 Rule 8.7 violation

[patchbot@xxxxxxx]

commit 0e60f1d9d1970cae49ee9d03f5759f44afc1fdee
Author:     Xenia Ragiadakou <burzalodowa@xxxxxxxxx>
AuthorDate: Mon Jul 18 17:56:41 2022 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Mon Jul 18 17:56:41 2022 +0200

    sched/credit: fix MISRA C 2012 Rule 8.7 violation
    
    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>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
 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)
 {
--
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