From: Yinghai Lu <yhlu.kernel@gmail.com>
Date: Wed, 20 Aug 2008 03:50:50 +0000 (-0700)
Subject: x86: print local APIC of APs one by one
X-Git-Tag: firefly_0821_release~17188^2~102
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ffd5aae7817fba22c5c3e304a31c44fa0a4e9a97;p=firefly-linux-kernel-4.4.55.git

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 5de2d38812aa..bf0e66d73030 100644
--- 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)