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Tue, 07 Apr 2020 18:00:03 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 2F365C433BA; Tue, 7 Apr 2020 18:00:03 +0000 (UTC) Received: from [192.168.1.10] (cpe-70-95-5-60.san.res.rr.com [70.95.5.60]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: sidgup) by smtp.codeaurora.org (Postfix) with ESMTPSA id 2D70FC433F2; Tue, 7 Apr 2020 18:00:01 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 2D70FC433F2 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=sidgup@codeaurora.org Subject: Re: [PATCH 2/2] remoteproc: core: Prevent sleep when rproc crashes To: Mathieu Poirier References: <1582164713-6413-1-git-send-email-sidgup@codeaurora.org> <1582164713-6413-3-git-send-email-sidgup@codeaurora.org> <20200224185334.GB9477@xps15> From: Siddharth Gupta Message-ID: <1a6a8661-d44f-adad-b262-ff42633c7b38@codeaurora.org> Date: Tue, 7 Apr 2020 11:00:00 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: <20200224185334.GB9477@xps15> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200407_110022_090680_C222882F X-CRM114-Status: GOOD ( 19.88 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ohad@wizery.com, tsoni@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, bjorn.andersson@linaro.org, rishabhb@codeaurora.org, psodagud@codeaurora.org, linux-arm-kernel@lists.infradead.org Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hey Mathieu, I will be sending a revised patchset soon. Will try to address your comments there. Thanks, Siddharth On 2/24/2020 10:53 AM, Mathieu Poirier wrote: > On Wed, Feb 19, 2020 at 06:11:53PM -0800, Siddharth Gupta wrote: >> Remoteproc recovery should be fast and any delay will have an impact on the >> user-experience. Use power management APIs (pm_stay_awake and pm_relax) to >> ensure that the system does not go to sleep. > When you say "ensure the system does not go to sleep", you're referring to the > system going idle from the CPUidle subsystem? > >> Signed-off-by: Siddharth Gupta >> --- >> drivers/remoteproc/remoteproc_core.c | 4 ++++ >> 1 file changed, 4 insertions(+) >> >> diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c >> index 5ab65a4..52e318c 100644 >> --- a/drivers/remoteproc/remoteproc_core.c >> +++ b/drivers/remoteproc/remoteproc_core.c >> @@ -1712,6 +1712,8 @@ static void rproc_crash_handler_work(struct work_struct *work) >> >> if (!rproc->recovery_disabled) >> rproc_trigger_recovery(rproc); >> + >> + pm_relax(&rproc->dev); >> } >> >> /** >> @@ -2242,6 +2244,8 @@ void rproc_report_crash(struct rproc *rproc, enum rproc_crash_type type) >> return; >> } >> >> + pm_stay_awake(&rproc->dev); >> + > I fail to understand how this can be useful since there is no HW associted to > rproc->dev... Is it possible for you to elaborate more on the problem you're > trying to fix? > > Thanks, > Mathieu > >> dev_err(&rproc->dev, "crash detected in %s: type %s\n", >> rproc->name, rproc_crash_to_string(type)); >> >> -- >> Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, >> a Linux Foundation Collaborative Project _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel