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[v2,1/3] xen: silence affinity messages on suspend/resume

Message ID 1456822933-25041-2-git-send-email-jgross@suse.com (mailing list archive)
State New, archived
Headers show

Commit Message

Jürgen Groß March 1, 2016, 9:02 a.m. UTC
When taking cpus offline for suspend or bringing them online on resume
again the scheduler might issue debug messages when temporarily
breaking vcpu affinity or restoring the original affinity settings.

The resume message can be removed completely, while the message when
breaking affinity should only be issued if the breakage is permanent.

Suggested-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
---
 xen/common/schedule.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

Comments

Dario Faggioli March 2, 2016, 11:11 a.m. UTC | #1
On Tue, 2016-03-01 at 10:02 +0100, Juergen Gross wrote:
> When taking cpus offline for suspend or bringing them online on
> resume
> again the scheduler might issue debug messages when temporarily
> breaking vcpu affinity or restoring the original affinity settings.
> 
> The resume message can be removed completely, while the message when
> breaking affinity should only be issued if the breakage is permanent.
> 
> Suggested-by: Jan Beulich <jbeulich@suse.com>
> Signed-off-by: Juergen Gross <jgross@suse.com>
>
Acked-by: Dario Faggioli <dario.faggioli@citrix.com>

Thanks and Regards,
Dario
diff mbox

Patch

diff --git a/xen/common/schedule.c b/xen/common/schedule.c
index 434dcfc..b0d4b18 100644
--- a/xen/common/schedule.c
+++ b/xen/common/schedule.c
@@ -615,7 +615,6 @@  void restore_vcpu_affinity(struct domain *d)
 
         if ( v->affinity_broken )
         {
-            printk(XENLOG_DEBUG "Restoring affinity for %pv\n", v);
             cpumask_copy(v->cpu_hard_affinity, v->cpu_hard_affinity_saved);
             v->affinity_broken = 0;
         }
@@ -670,14 +669,14 @@  int cpu_disable_scheduler(unsigned int cpu)
             if ( cpumask_empty(&online_affinity) &&
                  cpumask_test_cpu(cpu, v->cpu_hard_affinity) )
             {
-                printk(XENLOG_DEBUG "Breaking affinity for %pv\n", v);
-
                 if (system_state == SYS_STATE_suspend)
                 {
                     cpumask_copy(v->cpu_hard_affinity_saved,
                                  v->cpu_hard_affinity);
                     v->affinity_broken = 1;
                 }
+                else
+                    printk(XENLOG_DEBUG "Breaking affinity for %pv\n", v);
 
                 cpumask_setall(v->cpu_hard_affinity);
             }