On 26/11/16 23:13, Sebastian Andrzej Siewior wrote:
From: Anna-Maria Gleixner <[email protected]>

There is no requirement to keep the sysfs files around until the CPU is
completely dead. Remove them during the DOWN_PREPARE notification. This is
a preparatory patch for converting to the hotplug state machine.

Cc: Catalin Marinas <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: [email protected]
Signed-off-by: Anna-Maria Gleixner <[email protected]>
Signed-off-by: Sebastian Andrzej Siewior <[email protected]>
---
 arch/arm64/kernel/cpuinfo.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c
index b3d5b3e8fbcb..19aad7041e14 100644
--- a/arch/arm64/kernel/cpuinfo.c
+++ b/arch/arm64/kernel/cpuinfo.c
@@ -272,9 +272,10 @@ static int cpuid_callback(struct notifier_block *nb,

        switch (action & ~CPU_TASKS_FROZEN) {
        case CPU_ONLINE:
+       case CPU_DOWN_FAILED:
                rc = cpuid_add_regs(cpu);
                break;
-       case CPU_DEAD:
+       case CPU_DOWN_PREPARE:
                rc = cpuid_remove_regs(cpu);
                break;
        }

Looks reasonable to me:

Reviewed-by : Suzuki K Poulose <[email protected]>

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