From 7f9545aa1a91a9a4dc8c3e1476dbbfa98dd38b81 Mon Sep 17 00:00:00 2001 From: Sudeep Holla Date: Fri, 6 Jul 2018 12:02:46 +0100 Subject: [PATCH] arm64: smp: remove cpu and numa topology information when hotplugging out CPU We already repopulate the information on CPU hotplug-in, so we can safely remove the CPU topology and NUMA cpumap information during CPU hotplug out operation. This will help to provide the correct cpumask for scheduler domains. Cc: Catalin Marinas Cc: Will Deacon Tested-by: Ganapatrao Kulkarni Tested-by: Hanjun Guo Signed-off-by: Sudeep Holla Signed-off-by: Will Deacon --- arch/arm64/kernel/smp.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index 2a315f32fad3..a44cc09059b5 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -279,6 +279,9 @@ int __cpu_disable(void) if (ret) return ret; + remove_cpu_topology(cpu); + numa_remove_cpu(cpu); + /* * Take this CPU offline. Once we clear this, we can't return, * and we must not schedule until we're ready to give up the cpu. -- 2.20.1