linux-kernel - Re: [PATCH net 2/2] net: ipa: prevent concurrent replenish

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Message-ID: <20220111200426.37fd9f67@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net>
Date:   Tue, 11 Jan 2022 20:04:26 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Alex Elder <elder@...aro.org>
Cc:     davem@...emloft.net, jponduru@...eaurora.org,
        avuyyuru@...eaurora.org, bjorn.andersson@...aro.org,
        agross@...nel.org, cpratapa@...eaurora.org,
        subashab@...eaurora.org, evgreen@...omium.org, elder@...nel.org,
        netdev@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net 2/2] net: ipa: prevent concurrent replenish

On Tue, 11 Jan 2022 13:21:50 -0600 Alex Elder wrote:
> Use a new atomic variable to ensure only replenish instance for an
> endpoint executes at a time.

Why atomic_t? test_and_set_bit() + clear_bit() should do nicely here?