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From: Lina Iyer <ilina@codeaurora.org>
To: Stephen Boyd <swboyd@chromium.org>
Cc: agross@kernel.org, bjorn.andersson@linaro.org,
	linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org,
	rnayak@codeaurora.org, linux-kernel@vger.kernel.org,
	linux-pm@vger.kernel.org, dianders@chromium.org,
	mkshah@codeaurora.org,
	"Raju P.L.S.S.S.N" <rplsssn@codeaurora.org>
Subject: Re: [PATCH V2 1/4] drivers: qcom: rpmh-rsc: simplify TCS locking
Date: Wed, 24 Jul 2019 13:36:30 -0600
Message-ID: <20190724193630.GD18620@codeaurora.org> (raw)
In-Reply-To: <5d38a430.1c69fb81.6e696.9e6f@mx.google.com>

On Wed, Jul 24 2019 at 12:32 -0600, Stephen Boyd wrote:
>Quoting Lina Iyer (2019-07-24 07:54:52)
>> On Tue, Jul 23 2019 at 14:19 -0600, Stephen Boyd wrote:
>> >Quoting Lina Iyer (2019-07-23 12:21:59)
>> >> On Tue, Jul 23 2019 at 12:22 -0600, Stephen Boyd wrote:
>> >> >Can you keep irq saving and restoring in this patch and then remove that
>> >> >in the next patch with reasoning? It probably isn't safe if the lock is
>> >> >taken in interrupt context anyway.
>> >> >
>> >> Yes, the drv->lock should have been irqsave/irqrestore, but it hasn't
>> >> been changed by this patch.
>> >
>> >It needs to be changed to maintain the irqsaving/restoring of the code.
>> >
>> May be I should club this with the following patch. Instead of adding
>> irqsave and restore to drv->lock and then remvoing them again in the
>> following patch.
>>
>
>I suspect that gets us back to v1 of this patch series? I'd prefer you
>just keep the save/restore of irqs in this patch and then remove them
>later. Or if the order can be the other way, where we remove grabbing
>the lock in irq context comes first and then consolidate the locks into
>one it might work.
>
Patches 1 and 3 need not be bundled. We can keep them separate to help
understand the change better.
This patch order - #2, #1, #3, #4 would work.

--Lina


      reply index

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-22 21:53 Lina Iyer
2019-07-22 21:53 ` [PATCH V2 2/4] drivers: qcom: rpmh-rsc: avoid locking in the interrupt handler Lina Iyer
2019-07-23 20:11   ` Stephen Boyd
2019-07-24 14:52     ` Lina Iyer
2019-07-24 19:37       ` Stephen Boyd
2019-07-24 20:36         ` Lina Iyer
2019-07-24 23:27           ` Doug Anderson
2019-07-25 15:18             ` Lina Iyer
2019-07-25 15:39               ` Doug Anderson
2019-07-29 19:01                 ` Lina Iyer
2019-07-29 20:56                   ` Stephen Boyd
2019-07-30 17:29                     ` Lina Iyer
2019-07-22 21:53 ` [PATCH V2 3/4] drivers: qcom: rpmh: switch over from spinlock irq variants Lina Iyer
2019-07-23 18:24   ` Stephen Boyd
2019-07-22 21:53 ` [PATCH V2 4/4] drivers: qcom: rpmh-rsc: remove redundant register access Lina Iyer
2019-07-23 18:22 ` [PATCH V2 1/4] drivers: qcom: rpmh-rsc: simplify TCS locking Stephen Boyd
2019-07-23 19:21   ` Lina Iyer
2019-07-23 20:18     ` Stephen Boyd
2019-07-24 14:54       ` Lina Iyer
2019-07-24 18:32         ` Stephen Boyd
2019-07-24 19:36           ` Lina Iyer [this message]

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