linux-kernel - RE: [PATCH 02/11] Drivers: hv: vmbus: Don't bind the offer&rescind works to a specific CPU

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Message-ID: <MW2PR2101MB1052924E440C151A43065D0AD7DE0@MW2PR2101MB1052.namprd21.prod.outlook.com>
Date:   Fri, 10 Apr 2020 17:23:10 +0000
From:   Michael Kelley <mikelley@...rosoft.com>
To:     "Andrea Parri (Microsoft)" <parri.andrea@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Wei Liu <wei.liu@...nel.org>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        Dexuan Cui <decui@...rosoft.com>,
        Boqun Feng <boqun.feng@...il.com>,
        vkuznets <vkuznets@...hat.com>
Subject: RE: [PATCH 02/11] Drivers: hv: vmbus: Don't bind the offer&rescind
 works to a specific CPU

From: Andrea Parri (Microsoft) <parri.andrea@...il.com> Sent: Sunday, April 5, 2020 5:15 PM
> 
> The offer and rescind works are currently scheduled on the so called
> "connect CPU".  However, this is not really needed: we can synchronize
> the works by relying on the usage of the offer_in_progress counter and
> of the channel_mutex mutex.  This synchronization is already in place.
> So, remove this unnecessary "bind to the connect CPU" constraint and
> update the inline comments accordingly.
> 
> Suggested-by: Dexuan Cui <decui@...rosoft.com>
> Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@...il.com>
> ---
>  drivers/hv/channel_mgmt.c | 21 ++++++++++++++++-----
>  drivers/hv/vmbus_drv.c    | 39 ++++++++++++++++++++++++++++-----------
>  2 files changed, 44 insertions(+), 16 deletions(-)
> 

Reviewed-by: Michael Kelley <mikelley@...rosoft.com>