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Diffstat (limited to 'arch/x86/kernel/tsc_sync.c')
-rw-r--r--arch/x86/kernel/tsc_sync.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/arch/x86/kernel/tsc_sync.c b/arch/x86/kernel/tsc_sync.c
index f37930954d15..eed156851f5d 100644
--- a/arch/x86/kernel/tsc_sync.c
+++ b/arch/x86/kernel/tsc_sync.c
@@ -114,13 +114,12 @@ void __cpuinit check_tsc_sync_source(int cpu)
114 return; 114 return;
115 115
116 if (boot_cpu_has(X86_FEATURE_TSC_RELIABLE)) { 116 if (boot_cpu_has(X86_FEATURE_TSC_RELIABLE)) {
117 printk_once(KERN_INFO "Skipping synchronization checks as TSC is reliable.\n"); 117 if (cpu == (nr_cpu_ids-1) || system_state != SYSTEM_BOOTING)
118 pr_info(
119 "Skipped synchronization checks as TSC is reliable.\n");
118 return; 120 return;
119 } 121 }
120 122
121 pr_info("checking TSC synchronization [CPU#%d -> CPU#%d]:",
122 smp_processor_id(), cpu);
123
124 /* 123 /*
125 * Reset it - in case this is a second bootup: 124 * Reset it - in case this is a second bootup:
126 */ 125 */
@@ -142,12 +141,14 @@ void __cpuinit check_tsc_sync_source(int cpu)
142 cpu_relax(); 141 cpu_relax();
143 142
144 if (nr_warps) { 143 if (nr_warps) {
145 printk("\n"); 144 pr_warning("TSC synchronization [CPU#%d -> CPU#%d]:\n",
145 smp_processor_id(), cpu);
146 pr_warning("Measured %Ld cycles TSC warp between CPUs, " 146 pr_warning("Measured %Ld cycles TSC warp between CPUs, "
147 "turning off TSC clock.\n", max_warp); 147 "turning off TSC clock.\n", max_warp);
148 mark_tsc_unstable("check_tsc_sync_source failed"); 148 mark_tsc_unstable("check_tsc_sync_source failed");
149 } else { 149 } else {
150 printk(" passed.\n"); 150 pr_debug("TSC synchronization [CPU#%d -> CPU#%d]: passed\n",
151 smp_processor_id(), cpu);
151 } 152 }
152 153
153 /* 154 /*