From: "changcheng.liu--- via lttng-dev" <lttng-dev@lists.lttng.org>
To: lttng-dev@lists.lttng.org
Cc: changcheng.liu@aliyun.com
Subject: [lttng-dev] babeltrace convert call_site addr to func/offset
Date: Sun, 28 Jun 2020 12:05:02 +0800 [thread overview]
Message-ID: <20200628040502.GA36830@jerryopenix> (raw)
Message-ID: <20200628040502.C0jAu2IwKqIYwtgCi3my2aT2JqMGWx_ulmHt2P21Mco@z> (raw)
Hi all,
I checked lttng-ust-cry-profile source code:
https://github.com/lttng/lttng-ust/blob/master/liblttng-ust-cyg-profile/lttng-ust-cyg-profile.c
It traced the runtime virtual-address(VA) of the
1) called function address
2) caller address
The value of VA is different from the linked address.
Due to ASLR, the VA could be different when running the program every
time.
The babeltrace could covert the "ip" in the traced context into
func/offset. However, there's no context to trace the call_site and
babeltrace also support convert the "call_site" into func/offset.
Does lttng community has plan to supply the function to support
"call_site" context and make babeltrace could convert the "call_site"
into func/offset format?
B.R.
Changcheng
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next reply other threads:[~2020-06-29 13:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-28 4:05 changcheng.liu--- via lttng-dev [this message]
2020-06-28 4:05 ` [lttng-dev] babeltrace convert call_site addr to func/offset changcheng.liu--- via lttng-dev
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