Commit-ID: a2510d156eae9cf85c928d428471e44edd82c5ca
Gitweb: http://git.kernel.org/tip/a2510d156eae9cf85c928d428471e44edd82c5ca
Author: Dou Liyang <douly.fnst@xxxxxxxxxxxxxx>
AuthorDate: Wed, 13 Sep 2017 17:12:46 +0800
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Mon, 25 Sep 2017 15:03:14 +0200
x86/apic: Split local APIC timer setup from the APIC setup
apic_bsp_setup() sets up the local APIC, I/O APIC and APIC timer.
The local APIC and I/O APIC setup belongs to interrupt delivery mode
setup. Setting up the local APIC timer for booting CPU is another job
and has nothing to do with interrupt delivery mode setup.
Split local APIC timer setup from the APIC setup, keep it in the original
position for SMP and UP kernel for now.
Signed-off-by: Dou Liyang <douly.fnst@xxxxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: yinghai@xxxxxxxxxx
Cc: bhe@xxxxxxxxxx
Link: https://lkml.kernel.org/r/1505293975-26005-4-git-send-email-douly.fnst@xxxxxxxxxxxxxx
---
arch/x86/kernel/apic/apic.c | 4 ++--
arch/x86/kernel/smpboot.c | 5 +++++
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 08585bc..ad37324 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -2397,8 +2397,6 @@ int __init apic_bsp_setup(bool upmode)
end_local_APIC_setup();
irq_remap_enable_fault_handling();
setup_IO_APIC();
- /* Setup local timer */
- x86_init.timers.setup_percpu_clockev();
return id;
}
@@ -2438,6 +2436,8 @@ int __init APIC_init_uniprocessor(void)
default_setup_apic_routing();
apic_bsp_setup(true);
+ /* Setup local timer */
+ x86_init.timers.setup_percpu_clockev();
return 0;
}
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index ad59edd..dad0a09 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1340,6 +1340,8 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
case SMP_FORCE_UP:
disable_smp();
apic_bsp_setup(false);
+ /* Setup local timer */
+ x86_init.timers.setup_percpu_clockev();
return;
case SMP_OK:
break;
@@ -1354,6 +1356,9 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
default_setup_apic_routing();
cpu0_logical_apicid = apic_bsp_setup(false);
+ /* Setup local timer */
+ x86_init.timers.setup_percpu_clockev();
+
pr_info("CPU0: ");
print_cpu_info(&cpu_data(0));
--
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