[Xen-changelog] [xen staging] x86/smpboot: Use printk_once() rather than opencoding it

[patchbot@xxxxxxx]

commit cb396d8256ddb416a9a5583fa19560a3e05d5cc6
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Mon Jan 6 13:22:11 2020 +0000
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Mon Jan 6 17:22:04 2020 +0000

    x86/smpboot: Use printk_once() rather than opencoding it
    
    Shrink the text to be less verbose.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/arch/x86/smpboot.c | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/xen/arch/x86/smpboot.c b/xen/arch/x86/smpboot.c
index a7e7013097..7e29704080 100644
--- a/xen/arch/x86/smpboot.c
+++ b/xen/arch/x86/smpboot.c
@@ -1291,14 +1291,11 @@ int cpu_add(uint32_t apic_id, uint32_t acpi_id, 
uint32_t pxm)
     /* Physically added CPUs do not have synchronised TSC. */
     if ( boot_cpu_has(X86_FEATURE_TSC_RELIABLE) )
     {
-        static bool once_only;
-
-        if ( !test_and_set_bool(once_only) )
-            printk(XENLOG_WARNING
-                   " ** New physical CPU %u may have skewed TSC and hence "
-                   "break assumed cross-CPU TSC coherency.\n"
-                   " ** Consider using boot parameter \"tsc=skewed\" "
-                   "which forces TSC emulation where appropriate.\n", cpu);
+        printk_once(
+            XENLOG_WARNING
+            "New CPU %u may have skewed TSC and break cross-CPU TSC 
coherency\n"
+            "Consider using \"tsc=skewed\" to force emulation where 
appropriate\n",
+            cpu);
         cpumask_set_cpu(cpu, &tsc_sync_cpu_mask);
     }
 
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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