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SubjectRe: [PATCH 10/11] coresight-etm4x: Controls pertaining to the context ID functions
Hi Mathieu,

On 04/22/2015 06:40 PM, Mathieu Poirier wrote:
> From: Pratik Patel <pratikp@codeaurora.org>
>
> Adding sysfs entries to access and configure specifics about the
> context ID comparator functions.
>
> Signed-off-by: Pratik Patel <pratikp@codeaurora.org>
> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
> ---
> .../ABI/testing/sysfs-bus-coresight-devices-etm4x | 19 +++
> drivers/hwtracing/coresight/coresight-etm4x.c | 187 +++++++++++++++++++++
> 2 files changed, 206 insertions(+)
>
> diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x
> index b5c0456290ab..8b32cb7b9723 100644
> --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x
> +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x
> @@ -254,3 +254,22 @@ Date: April 2015
> KernelVersion: 4.01
> Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
> Description: (RW) Controls the selection of the resources in the trace unit.
> +
> +What: /sys/bus/coresight/devices/<memory_map>.etm/ctxid_idx
> +Date: April 2015
> +KernelVersion: 4.01
> +Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
> +Description: (RW) Select which context ID comparator to work with.
> +
> +What: /sys/bus/coresight/devices/<memory_map>.etm/ctxid_val
> +Date: April 2015
> +KernelVersion: 4.01
> +Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
> +Description: (RW) Get/Set the context ID comparator value to trigger on.

If I'm understanding this correctly, ctxid_val is multiplexed using ctxid_idx.
Why not just have ctxid_val0, ctxid_val1, ...?

Thanks,
Chris

--
Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project


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