x86: print local APIC of APs one by one

instead of print that of all APs at the time

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/io_apic.c b/arch/x86/kernel/io_apic.c
index 5de2d38812aaf363e257e37e35647667149ada81..bf0e66d73030d100b34beb36470661e70a582ef5 100644 (file)
--- a/arch/x86/kernel/io_apic.c
+++ b/arch/x86/kernel/io_apic.c
@@ -1777,7 +1777,12 @@ __apicdebuginit(void) print_local_APIC(void *dummy)
 
 __apicdebuginit(void) print_all_local_APICs(void)
 {
-       on_each_cpu(print_local_APIC, NULL, 1);
+       int cpu;
+
+       preempt_disable();
+       for_each_online_cpu(cpu)
+               smp_call_function_single(cpu, print_local_APIC, NULL, 1);
+       preempt_enable();
 }
 
 __apicdebuginit(void) print_PIC(void)