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From: Ramesh Errabolu via lttng-dev <lttng-dev@lists.lttng.org>
To: lttng-dev@lists.lttng.org
Subject: [lttng-dev] Can't trace function calls
Date: Wed, 31 Mar 2021 10:51:03 -0500	[thread overview]
Message-ID: <CAFGSPrw1Ev1c+Ok7tvyzEJOQNDze6fbpzNKFzmH=9hSVYGF69A@mail.gmail.com> (raw)


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I am trying to capture the list of functions being called by an app. The
app relies on a couple of shared libraries (libhsa-runtime64.so and
libhsakmt.so).

My experiments all *FAIL *i.e. there are no log files of the output. The
link on lttng-ust-cyg-profile does not tell me where I can get them.
Instrument the build files for the two libraries to allow function tracing
by the gcc/clang flags -finstrument-functions and run workload as follows

   - Instrument the build files for the two libraries to allow function
   tracing by the gcc/clang flags *-finstrument-functions* and run workload
   as follows
      - LD_PRELOAD=liblttng-ust-cyg-profile.so   ./rocminfo
   - Instrument the application as well for the gcc/clang flag along with
   the two libs
   - LD_PRELOAD=liblttng-ust-cyg-profile.so   ./rocminfo

I am using LTTng version Ubuntu: LTTng Stable 2.12 PPA

   - apt-get install lttng-tools
   - apt-get install lttng-modules-dkms
   - apt-get install liblttng-ust-dev

I noticed no kernel modules with substring "ltt" in it.

Any help is appreciated.

Regards,
Ramesh

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             reply	other threads:[~2021-03-31 15:51 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-31 15:51 Ramesh Errabolu via lttng-dev [this message]
2021-03-31 17:42 ` Jonathan Rajotte-Julien via lttng-dev
2021-03-31 17:55   ` Ramesh Errabolu via lttng-dev
2021-04-02 15:07     ` Jonathan Rajotte-Julien via lttng-dev

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