Is it probably to trigger function graph via trace event?

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Subject: Is it probably to trigger function graph via trace event?
From: wyang <w90p710@xxxxxxxxx>
Date: Mon, 12 Nov 2018 23:41:15 +0800
Cc: linux-trace-users@xxxxxxxxxxxxxxx
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:52.0) Gecko/20100101 Thunderbird/52.9.1

Hi Steven,

The trace event has already supported filter functionality, so is ftraceable to trigger function graph when trace event filter is matched?It is very useful for us to filter function graph. If the functionalityis not supported, how about to support it? If possible, I hope to do it.

Wei

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