linux-kernel - [tip: smp/core] powerpc: Replace cpu_up/down() with add/remove

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Date:   Wed, 25 Mar 2020 12:06:03 -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>,
        Michael Ellerman <mpe@...erman.id.au>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: smp/core] powerpc: Replace cpu_up/down() with add/remove_cpu()

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

Commit-ID:     4d37cc2dc3dfffb782663c46cc0ee2c483e2f2ba
Gitweb:        https://git.kernel.org/tip/4d37cc2dc3dfffb782663c46cc0ee2c483e2f2ba
Author:        Qais Yousef <qais.yousef@....com>
AuthorDate:    Mon, 23 Mar 2020 13:51:03 
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Wed, 25 Mar 2020 12:59:35 +01:00

powerpc: Replace cpu_up/down() with add/remove_cpu()

The core device API performs extra housekeeping bits that are missing
from directly calling cpu_up/down.

See commit a6717c01ddc2 ("powerpc/rtas: use device model APIs and
serialization during LPM") for an example description of what might go
wrong.

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>
Acked-by: Michael Ellerman <mpe@...erman.id.au>
Link: https://lkml.kernel.org/r/20200323135110.30522-11-qais.yousef@arm.com

---
 arch/powerpc/kexec/core_64.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/kexec/core_64.c b/arch/powerpc/kexec/core_64.c
index 04a7cba..b418409 100644
--- a/arch/powerpc/kexec/core_64.c
+++ b/arch/powerpc/kexec/core_64.c
@@ -212,7 +212,7 @@ static void wake_offline_cpus(void)
 		if (!cpu_online(cpu)) {
 			printk(KERN_INFO "kexec: Waking offline cpu %d.\n",
 			       cpu);
-			WARN_ON(cpu_up(cpu));
+			WARN_ON(add_cpu(cpu));
 		}
 	}
 }