[Xen-changelog] [xen stable-4.4] x86/nmi: be less verbose when testing the NMI watchdog

[patchbot@xxxxxxx]

commit 31c491171f57e816c59d6cf5f6dc0c467c416c5d
Author:     David Vrabel <david.vrabel@xxxxxxxxxx>
AuthorDate: Tue Jun 24 14:22:54 2014 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Jun 24 14:22:54 2014 +0200

    x86/nmi: be less verbose when testing the NMI watchdog
    
    There's no need to print all the CPUs that are ok, only the ones that
    got stuck.
    
    The resulting output is either:
    
      Testing NMI watchdog on all CPUs: 1 4 6 stuck
    
    or
    
      Testing NMI watchdog on all CPUs: ok
    
    Signed-off-by: David Vrabel <david.vrabel@xxxxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Tim Deegan <tim@xxxxxxx>
    master commit: f64b1901564b6206dbbe946699619fcd22446de8
    master date: 2014-05-15 15:32:36 +0200
---
 xen/arch/x86/nmi.c |   14 ++++++++------
 1 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/xen/arch/x86/nmi.c b/xen/arch/x86/nmi.c
index c67a9c3..7aaab8a 100644
--- a/xen/arch/x86/nmi.c
+++ b/xen/arch/x86/nmi.c
@@ -118,11 +118,12 @@ int __init check_nmi_watchdog (void)
 {
     static unsigned int __initdata prev_nmi_count[NR_CPUS];
     int cpu;
-    
+    bool_t ok = 1;
+
     if ( !nmi_watchdog )
         return 0;
 
-    printk("Testing NMI watchdog --- ");
+    printk("Testing NMI watchdog on all CPUs:");
 
     for_each_online_cpu ( cpu )
         prev_nmi_count[cpu] = nmi_count(cpu);
@@ -137,12 +138,13 @@ int __init check_nmi_watchdog (void)
     for_each_online_cpu ( cpu )
     {
         if ( nmi_count(cpu) - prev_nmi_count[cpu] <= 5 )
-            printk("CPU#%d stuck. ", cpu);
-        else
-            printk("CPU#%d okay. ", cpu);
+        {
+            printk(" %d", cpu);
+            ok = 0;
+        }
     }
 
-    printk("\n");
+    printk(" %s\n", ok ? "ok" : "stuck");
 
     /*
      * Now that we know it works we can reduce NMI frequency to
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.4

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