[xen staging] xen/sched: Remove unused-but-set variable

[patchbot@xxxxxxx]

commit 4026c0d4c4811b8337b4eab3cdea7037cbfb0eb4
Author:     Michal Orzel <michal.orzel@xxxxxxx>
AuthorDate: Wed Apr 27 11:49:38 2022 +0200
Commit:     Stefano Stabellini <stefano.stabellini@xxxxxxxxxx>
CommitDate: Wed Apr 27 15:21:48 2022 -0700

    xen/sched: Remove unused-but-set variable
    
    Function schedule_cpu_add defines and sets a variable old_unit but
    does not make use of it. Remove this variable.
    
    Signed-off-by: Michal Orzel <michal.orzel@xxxxxxx>
    Reviewed-by: Juergen Gross <jgross@xxxxxxxx>
    Acked-by: Dario Faggioli <dfaggioli@xxxxxxxx>
---
 xen/common/sched/core.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/xen/common/sched/core.c b/xen/common/sched/core.c
index 19ab678181..8a8c25bbda 100644
--- a/xen/common/sched/core.c
+++ b/xen/common/sched/core.c
@@ -3104,7 +3104,7 @@ int schedule_cpu_add(unsigned int cpu, struct cpupool *c)
     {
         const cpumask_t *mask;
         unsigned int cpu_iter, idx = 0;
-        struct sched_unit *old_unit, *master_unit;
+        struct sched_unit *master_unit;
         struct sched_resource *sr_old;
 
         /*
@@ -3128,7 +3128,6 @@ int schedule_cpu_add(unsigned int cpu, struct cpupool *c)
             if ( cpu == cpu_iter )
                 continue;
 
-            old_unit = idle_vcpu[cpu_iter]->sched_unit;
             sr_old = get_sched_res(cpu_iter);
             kill_timer(&sr_old->s_timer);
             idle_vcpu[cpu_iter]->sched_unit = master_unit;
--
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