linux-kernel - Re: [PATCH v4 03/10] drivers: qcom: rpmh-rsc: log RPMH requests in FTRACE

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Date:   Fri, 9 Mar 2018 21:47:32 -0700
From:   Lina Iyer <ilina@...eaurora.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     andy.gross@...aro.org, david.brown@...aro.org,
        linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org,
        rnayak@...eaurora.org, bjorn.andersson@...aro.org,
        linux-kernel@...r.kernel.org, sboyd@...nel.org
Subject: Re: [PATCH v4 03/10] drivers: qcom: rpmh-rsc: log RPMH requests in
 FTRACE

On Fri, Mar 09 2018 at 16:52 -0700, Steven Rostedt wrote:
>On Fri,  9 Mar 2018 16:25:36 -0700
>Lina Iyer <ilina@...eaurora.org> wrote:
>
>> Log sent RPMH requests and interrupt responses in FTRACE.
>>
>> Cc: Steven Rostedt <rostedt@...dmis.org>
>> Signed-off-by: Lina Iyer <ilina@...eaurora.org>
>> ---
>>
>> Changes in v4:
>> 	- fix compilation issues, use __assign_str
>> 	- use %#x instead of 0x%08x
>
>Hmm, I don't believe libtraceevent (used by trace-cmd and perf)
>supports "%#x". But that needs to be fixed in libtraceevent and you
>don't need to modify this patch.
>
>+			 __field(bool, wait)
>
>Usually I would recommend against 'bool' in structures, but it
>shouldn't affect the tracing code. Might want to look at how it
>converts it in the /sys/kernel/tracing/events/rpmh/rpmh_send_msg/format
>file. It probably makes no difference if it was an int.
>
>Other than that... Looks good.

field:bool wait;        offset:32;      size:1; signed:0;

-- Lina
>
>Reviewed-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
>
>-- Steve
>
>
>> Changes in v3:
>> 	- Use __string() instead of char *
>> 	- fix TRACE_INCLUDE_PATH
>> ---