[Xen-devel] [PATCH 5/6] xen: RTDS: rearrange members of control structures

[Dario Faggioli <dario.faggioli@xxxxxxxxxx>]

Nothing changed in `pahole` output, in terms of holes
and padding, but some fields have been moved, to put
related members in same cache line.

Signed-off-by: Dario Faggioli <dario.faggioli@xxxxxxxxxx>
---
Cc: Meng Xu <mengxu@xxxxxxxxxxxxx>
Cc: George Dunlap <george.dunlap@xxxxxxxxxxxxx>
---
 xen/common/sched_rt.c |   13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/xen/common/sched_rt.c b/xen/common/sched_rt.c
index 1b30014..39f6bee 100644
--- a/xen/common/sched_rt.c
+++ b/xen/common/sched_rt.c
@@ -171,11 +171,14 @@ static void repl_timer_handler(void *data);
 struct rt_private {
     spinlock_t lock;            /* the global coarse-grained lock */
     struct list_head sdom;      /* list of availalbe domains, used for dump */
+
     struct list_head runq;      /* ordered list of runnable vcpus */
     struct list_head depletedq; /* unordered list of depleted vcpus */
+
+    struct timer *repl_timer;   /* replenishment timer */
     struct list_head replq;     /* ordered list of vcpus that need 
replenishment */
+
     cpumask_t tickled;          /* cpus been tickled */
-    struct timer *repl_timer;   /* replenishment timer */
 };
 
 /*
@@ -185,10 +188,6 @@ struct rt_vcpu {
     struct list_head q_elem;     /* on the runq/depletedq list */
     struct list_head replq_elem; /* on the replenishment events list */
 
-    /* Up-pointers */
-    struct rt_dom *sdom;
-    struct vcpu *vcpu;
-
     /* VCPU parameters, in nanoseconds */
     s_time_t period;
     s_time_t budget;
@@ -198,6 +197,10 @@ struct rt_vcpu {
     s_time_t last_start;         /* last start time */
     s_time_t cur_deadline;       /* current deadline for EDF */
 
+    /* Up-pointers */
+    struct rt_dom *sdom;
+    struct vcpu *vcpu;
+
     unsigned flags;              /* mark __RTDS_scheduled, etc.. */
 };
 


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