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From: Leo Yan <leo.yan@linaro.org>
To: Suzuki K Poulose <Suzuki.Poulose@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>,
	Mathieu Poirier <mathieu.poirier@linaro.org>,
	Jonathan Corbet <corbet@lwn.net>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Wei Xu <xuwei5@hisilicon.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	Andy Gross <andy.gross@linaro.org>,
	David Brown <david.brown@linaro.org>,
	Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@codeaurora.org>,
	Guodong Xu <guodong.xu@linaro.org>,
	John Stultz <john.stultz@linaro.org>,
	linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org,
	linux-clk@vger.kernel.org, Sudeep Holla <sudeep.holla>
Subject: Re: [PATCH v5 6/9] coresight: add support for CPU debug module
Date: Thu, 30 Mar 2017 21:51:45 +0800	[thread overview]
Message-ID: <20170330135145.GA26911@leoy-linaro> (raw)
In-Reply-To: <a9078a4e-152e-01ae-8750-1396da2bc623@arm.com>

On Thu, Mar 30, 2017 at 10:00:30AM +0100, Suzuki K Poulose wrote:

[...]

> Leo,
> 
> Also, it would be good to restore the PRCR register back to the original state
> after we read the registers (if we changed them). I am exploring ways to make
> use of this feature on demand (e.g, tie it to sysrq-t or sysrq-l) and not just
> at panic time. So it would be good to have the state restored to not affect the
> normal functioning even after dumping the registers.

Got it. Will take care for this.

Thanks,
Leo Yan

> PS: I have a small hack to hook this into a sysrq-x at runtime, but on a second thought
> it is better not to consume the key and rather tie it to something which already exist,
> as mentioned above.
> 
> Thanks
> Suzuki

WARNING: multiple messages have this Message-ID (diff)
From: Leo Yan <leo.yan@linaro.org>
To: Suzuki K Poulose <Suzuki.Poulose@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>,
	Mathieu Poirier <mathieu.poirier@linaro.org>,
	Jonathan Corbet <corbet@lwn.net>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Wei Xu <xuwei5@hisilicon.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	Andy Gross <andy.gross@linaro.org>,
	David Brown <david.brown@linaro.org>,
	Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@codeaurora.org>,
	Guodong Xu <guodong.xu@linaro.org>,
	John Stultz <john.stultz@linaro.org>,
	linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org,
	linux-clk@vger.kernel.org, Sudeep Holla <sudeep.holla@arm.com>
Subject: Re: [PATCH v5 6/9] coresight: add support for CPU debug module
Date: Thu, 30 Mar 2017 21:51:45 +0800	[thread overview]
Message-ID: <20170330135145.GA26911@leoy-linaro> (raw)
In-Reply-To: <a9078a4e-152e-01ae-8750-1396da2bc623@arm.com>

On Thu, Mar 30, 2017 at 10:00:30AM +0100, Suzuki K Poulose wrote:

[...]

> Leo,
> 
> Also, it would be good to restore the PRCR register back to the original state
> after we read the registers (if we changed them). I am exploring ways to make
> use of this feature on demand (e.g, tie it to sysrq-t or sysrq-l) and not just
> at panic time. So it would be good to have the state restored to not affect the
> normal functioning even after dumping the registers.

Got it. Will take care for this.

Thanks,
Leo Yan

> PS: I have a small hack to hook this into a sysrq-x at runtime, but on a second thought
> it is better not to consume the key and rather tie it to something which already exist,
> as mentioned above.
> 
> Thanks
> Suzuki

WARNING: multiple messages have this Message-ID (diff)
From: leo.yan@linaro.org (Leo Yan)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v5 6/9] coresight: add support for CPU debug module
Date: Thu, 30 Mar 2017 21:51:45 +0800	[thread overview]
Message-ID: <20170330135145.GA26911@leoy-linaro> (raw)
In-Reply-To: <a9078a4e-152e-01ae-8750-1396da2bc623@arm.com>

On Thu, Mar 30, 2017 at 10:00:30AM +0100, Suzuki K Poulose wrote:

[...]

> Leo,
> 
> Also, it would be good to restore the PRCR register back to the original state
> after we read the registers (if we changed them). I am exploring ways to make
> use of this feature on demand (e.g, tie it to sysrq-t or sysrq-l) and not just
> at panic time. So it would be good to have the state restored to not affect the
> normal functioning even after dumping the registers.

Got it. Will take care for this.

Thanks,
Leo Yan

> PS: I have a small hack to hook this into a sysrq-x at runtime, but on a second thought
> it is better not to consume the key and rather tie it to something which already exist,
> as mentioned above.
> 
> Thanks
> Suzuki

  reply	other threads:[~2017-03-30 13:51 UTC|newest]

Thread overview: 102+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-25 18:23 [PATCH v5 0/9] coresight: enable debug module Leo Yan
2017-03-25 18:23 ` Leo Yan
2017-03-25 18:23 ` [PATCH v5 1/9] coresight: bindings for CPU " Leo Yan
2017-03-25 18:23   ` Leo Yan
2017-03-30 22:49   ` Rob Herring
2017-03-30 22:49     ` Rob Herring
2017-03-31  9:04   ` Suzuki K Poulose
2017-03-31  9:04     ` Suzuki K Poulose
2017-03-31  9:04     ` Suzuki K Poulose
2017-03-25 18:23 ` [PATCH v5 2/9] doc: Add documentation for Coresight CPU debug Leo Yan
2017-03-25 18:23   ` Leo Yan
2017-03-25 18:23 ` [PATCH v5 3/9] coresight: of_get_coresight_platform_data: Add missing of_node_put Leo Yan
2017-03-25 18:23   ` Leo Yan
2017-03-25 18:23 ` [PATCH v5 4/9] coresight: refactor with function of_coresight_get_cpu Leo Yan
2017-03-25 18:23   ` Leo Yan
2017-03-31  9:05   ` Suzuki K Poulose
2017-03-31  9:05     ` Suzuki K Poulose
2017-03-31  9:05     ` Suzuki K Poulose
2017-03-25 18:23 ` [PATCH v5 6/9] coresight: add support for CPU debug module Leo Yan
2017-03-25 18:23   ` Leo Yan
2017-03-27 16:34   ` Suzuki K Poulose
2017-03-27 16:34     ` Suzuki K Poulose
2017-03-27 16:34     ` Suzuki K Poulose
2017-03-29  3:07     ` Leo Yan
2017-03-29  3:07       ` Leo Yan
2017-03-29  9:07       ` Suzuki K Poulose
2017-03-29  9:07         ` Suzuki K Poulose
2017-03-29  9:07         ` Suzuki K Poulose
2017-03-29 10:27         ` Leo Yan
2017-03-29 10:27           ` Leo Yan
2017-03-29 10:31           ` Suzuki K Poulose
2017-03-29 10:31             ` Suzuki K Poulose
     [not found]             ` <89b6c6c7-0da0-6891-312a-c9221851c20a-5wv7dgnIgG8@public.gmane.org>
2017-03-29 10:37               ` Leo Yan
2017-03-29 10:37                 ` Leo Yan
2017-03-29 10:37                 ` Leo Yan
2017-03-29 15:50                 ` Suzuki K Poulose
2017-03-29 15:50                   ` Suzuki K Poulose
2017-03-29 15:50                   ` Suzuki K Poulose
2017-03-29 15:17       ` Mike Leach
2017-03-29 15:17         ` Mike Leach
2017-03-29 15:17         ` Mike Leach
2017-03-30  1:18         ` Leo Yan
2017-03-30  1:18           ` Leo Yan
2017-03-30  1:18           ` Leo Yan
2017-03-29 15:41       ` Mathieu Poirier
2017-03-29 15:41         ` Mathieu Poirier
2017-03-29 15:41         ` Mathieu Poirier
2017-03-28 16:50   ` Mathieu Poirier
2017-03-28 16:50     ` Mathieu Poirier
2017-03-29  1:54     ` Leo Yan
2017-03-29  1:54       ` Leo Yan
2017-03-29 14:56       ` Mike Leach
2017-03-29 14:56         ` Mike Leach
2017-03-29 14:56         ` Mike Leach
2017-03-30  1:03         ` Leo Yan
2017-03-30  1:03           ` Leo Yan
2017-03-30  1:03           ` Leo Yan
2017-03-30  9:00           ` Suzuki K Poulose
2017-03-30  9:00             ` Suzuki K Poulose
2017-03-30  9:00             ` Suzuki K Poulose
2017-03-30 13:51             ` Leo Yan [this message]
2017-03-30 13:51               ` Leo Yan
2017-03-30 13:51               ` Leo Yan
2017-03-30 15:47         ` Sudeep Holla
2017-03-30 15:47           ` Sudeep Holla
2017-03-30 15:47           ` Sudeep Holla
2017-03-29 16:55       ` Mathieu Poirier
2017-03-29 16:55         ` Mathieu Poirier
     [not found]         ` <20170329165535.GB24889-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2017-03-30  1:59           ` Leo Yan
2017-03-30  1:59             ` Leo Yan
2017-03-30  1:59             ` Leo Yan
2017-03-30 15:46             ` Mathieu Poirier
2017-03-30 15:46               ` Mathieu Poirier
2017-03-30 15:46               ` Mathieu Poirier
2017-03-30 15:46               ` Mathieu Poirier
     [not found]               ` <CANLsYkwPYSvy2xjf8uuvx1WGWpGdMFy7kF=30VbvgW+jDvnFuw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-03-30 16:04                 ` Sudeep Holla
2017-03-30 16:04                   ` Sudeep Holla
2017-03-30 16:04                   ` Sudeep Holla
2017-03-30 16:04                   ` Sudeep Holla
     [not found]   ` <1490466197-29163-7-git-send-email-leo.yan-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2017-03-30 15:56     ` Sudeep Holla
2017-03-30 15:56       ` Sudeep Holla
2017-03-30 15:56       ` Sudeep Holla
2017-03-31  0:54       ` Leo Yan
2017-03-31  0:54         ` Leo Yan
2017-03-25 18:23 ` [PATCH v5 7/9] clk: hi6220: add debug APB clock Leo Yan
2017-03-25 18:23   ` Leo Yan
2017-04-04 21:51   ` Stephen Boyd
2017-04-04 21:51     ` Stephen Boyd
     [not found]     ` <20170404215109.GH18246-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-04-06 13:59       ` Leo Yan
2017-04-06 13:59         ` Leo Yan
2017-04-06 13:59         ` Leo Yan
2017-03-25 18:23 ` [PATCH v5 8/9] arm64: dts: hi6220: register debug module Leo Yan
2017-03-25 18:23   ` Leo Yan
     [not found] ` <1490466197-29163-1-git-send-email-leo.yan-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2017-03-25 18:23   ` [PATCH v5 5/9] coresight: use const for device_node structures Leo Yan
2017-03-25 18:23     ` Leo Yan
2017-03-25 18:23     ` Leo Yan
     [not found]     ` <1490466197-29163-6-git-send-email-leo.yan-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2017-04-04 21:48       ` Stephen Boyd
2017-04-04 21:48         ` Stephen Boyd
2017-04-04 21:48         ` Stephen Boyd
2017-03-25 18:23   ` [PATCH v5 9/9] arm64: dts: qcom: msm8916: Add debug unit Leo Yan
2017-03-25 18:23     ` Leo Yan
2017-03-25 18:23     ` Leo Yan

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