linux-kernel - [RFC PATCH v1 16/70] x86, kernel, msr:

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Date:	Tue, 22 Jul 2014 21:58:52 -0400
From:	"Chen, Gong" <gong.chen@...ux.intel.com>
To:	linux-kernel@...r.kernel.org
Cc:	mingo@...nel.org, tglx@...utronix.de, paulus@...ba.org,
	benh@...nel.crashing.org, tony.luck@...el.com, hpa@...or.com,
	jkosina@...e.cz, rafael.j.wysocki@...el.com, bp@...en8.de,
	linux@....linux.org.uk, ralf@...ux-mips.org,
	schwidefsky@...ibm.com, davem@...emloft.net,
	viro@...iv.linux.org.uk, fweisbec@...il.com, cl@...ux.com,
	akpm@...ux-foundation.org, axboe@...nel.dk,
	JBottomley@...allels.com, neilb@...e.de,
	christoffer.dall@...aro.org, rostedt@...dmis.org, rric@...nel.org,
	gregkh@...uxfoundation.org, mhocko@...e.cz, david@...morbit.com,
	"Chen, Gong" <gong.chen@...ux.intel.com>
Subject: [RFC PATCH v1 16/70] x86, kernel, msr: _FROZEN Cleanup

Remove XXX_FROZEN state from x86/kernel/msr.

Signed-off-by: Chen, Gong <gong.chen@...ux.intel.com>
---
 arch/x86/kernel/msr.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c
index c9603ac..e388659 100644
--- a/arch/x86/kernel/msr.c
+++ b/arch/x86/kernel/msr.c
@@ -224,12 +224,14 @@ static int msr_class_cpu_callback(struct notifier_block *nfb,
 	case CPU_UP_PREPARE:
 		err = msr_device_create(cpu);
 		break;
-	case CPU_UP_CANCELED:
-	case CPU_UP_CANCELED_FROZEN:
 	case CPU_DEAD:
 		msr_device_destroy(cpu);
 		break;
 	}
+
+	if ((action & ~CPU_TASKS_FROZEN) == CPU_UP_CANCELED)
+		msr_device_destroy(cpu);
+
 	return notifier_from_errno(err);
 }
 
-- 
2.0.0.rc2

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