linux-kernel - [tip: smp/core] ia64: Replace cpu_down() with smp_shutdown_nonboot

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Message-ID: <158513796636.28353.2605944745472235096.tip-bot2@tip-bot2>
Date:   Wed, 25 Mar 2020 12:06:06 -0000
From:   "tip-bot2 for Qais Yousef" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Qais Yousef <qais.yousef@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Tony Luck <tony.luck@...el.com>,
        Fenghua Yu <fenghua.yu@...el.com>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: smp/core] ia64: Replace cpu_down() with smp_shutdown_nonboot_cpus()

The following commit has been merged into the smp/core branch of tip:

Commit-ID:     1e42176b4dac328b0be7075c2cebdf2006d31eb3
Gitweb:        https://git.kernel.org/tip/1e42176b4dac328b0be7075c2cebdf2006d31eb3
Author:        Qais Yousef <qais.yousef@....com>
AuthorDate:    Mon, 23 Mar 2020 13:50:56 
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Wed, 25 Mar 2020 12:59:32 +01:00

ia64: Replace cpu_down() with smp_shutdown_nonboot_cpus()

Use the new smp_shutdown_nonboot_cpus() instead of using cpu_down()
directly.

Use reboot_cpu instead of hardcoding the boot CPU to 0.

This also prepares to make cpu_up/down() a private interface of the CPU
subsystem.

Signed-off-by: Qais Yousef <qais.yousef@....com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: Tony Luck <tony.luck@...el.com>
Cc: Fenghua Yu <fenghua.yu@...el.com>
Link: https://lkml.kernel.org/r/20200323135110.30522-4-qais.yousef@arm.com

---
 arch/ia64/kernel/process.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index 968b5f3..bf4c0cd 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -646,14 +646,8 @@ cpu_halt (void)
 
 void machine_shutdown(void)
 {
-#ifdef CONFIG_HOTPLUG_CPU
-	int cpu;
+	smp_shutdown_nonboot_cpus(reboot_cpu);
 
-	for_each_online_cpu(cpu) {
-		if (cpu != smp_processor_id())
-			cpu_down(cpu);
-	}
-#endif
 #ifdef CONFIG_KEXEC
 	kexec_disable_iosapic();
 #endif