linux-kernel - RE: [PATCH v3] hv_netvsc: Add per-cpu ethtool stats for netvsc

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Message-ID: <SN6PR2101MB11359728E41C4B2AB8E7736D84550@SN6PR2101MB1135.namprd21.prod.outlook.com>
Date:   Tue, 24 Jul 2018 01:42:06 +0000
From:   Yidong Ren <Yidong.Ren@...rosoft.com>
To:     KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        "David S. Miller" <davem@...emloft.net>,
        "devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     Madhan Sivakumar <madhans@...rosoft.com>
Subject: RE: [PATCH v3] hv_netvsc: Add per-cpu ethtool stats for netvsc

> From: Yidong Ren <yidren@...uxonhyperv.com>
> Sent: Monday, July 23, 2018 6:26 PM
> +	pcpu_sum = kvmalloc(sizeof(struct netvsc_ethtool_pcpu_stats) *
> +			num_present_cpus(), GFP_KERNEL);

Since there is no plan for CPU hotplug in Hyper-V in short term, it is fine 
to use num_present_cpus for now. We can move to debugfs later if necessary.