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SubjectRe: [PATCH v2 00/15] tracing: 'hist' triggers
On Mon, Mar 2, 2015 at 11:49 AM, Karim Yaghmour
<karim.yaghmour@opersys.com> wrote:
>
> On 15-03-02 02:45 PM, Steven Rostedt wrote:
>> Interesting. The Android devices I have still have it enabled (rooted,
>> but still running the stock system).
>
> I don't know that there's any policy to disable tracing on Android. The
> Android framework in fact has generally been instrumented by Google
> itself to output trace info into trace_marker. And the systrace/atrace
> tools made available to app developers need to get access to this
> tracing info. So, if Android had tracing disabled, systrace/atrace
> wouldn't work.
> https://developer.android.com/tools/debugging/systrace.html

that's interesting. thanks for the link.

I don't see tracing being explicitly enabled in defconfig:
https://source.android.com/devices/tech/kernel.html
or here:
https://android.googlesource.com/kernel/common/+/android-3.10/android/configs/android-recommended.cfg


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