linux-kernel - [ANNOUNCE] libtracececmd 1.0.0

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Message-ID: <20210410095431.2935816f@oasis.local.home>
Date:   Sat, 10 Apr 2021 09:54:31 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     LKML <linux-kernel@...r.kernel.org>,
        "linux-trace-devel@...r.kernel.org" 
        <linux-trace-devel@...r.kernel.org>,
        Linux-trace Users <linux-trace-users@...r.kernel.org>
Cc:     Zamir SUN <sztsian@...il.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...hat.com>, zsun@...hat.com,
        Vitaly Chikunov <vt@...linux.org>,
        Tzvetomir Stoyanov <tstoyanov@...are.com>,
        Yordan Karadzhov <ykaradzhov@...are.com>,
        Ben Hutchings <ben@...adent.org.uk>,
        Sudip Mukherjee <sudipm.mukherjee@...il.com>,
        Tony Jones <tonyj@...e.de>, John Kacur <jkacur@...hat.com>,
        Clark Williams <williams@...hat.com>,
        Al Stone <ahs3@...ian.org>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Jes Sorensen <jes.sorensen@...il.com>
Subject: [ANNOUNCE] libtracececmd 1.0.0

This is the initial official release of libtracecmd 1.0.0. This is
needed by KernelShark in order to be in a stand alone repository:

  https://git.kernel.org/pub/scm/utils/trace-cmd/kernel-shark.git/

All new development for KernelShark now takes place in the above
repository, which will depend on this library. The code that exists
currently in the trace-cmd.git repository for KernelShark will be
removed.

This library lives (and will always live) with the trace-cmd repository.

  https://git.kernel.org/pub/scm/utils/trace-cmd/trace-cmd.git/snapshot/trace-cmd-libtracecmd-1.1.0.tar.gz
  https://git.kernel.org/pub/scm/utils/trace-cmd/trace-cmd.git/

The purpose of his library is to be able to create and read the
trace.dat file that trace-cmd produces. It may also include
functionality to start trace recordings and other features provided by
trace-cmd itself. But for this release, it only contains the bare
necessities that a stand alone KernelShark requires.

The current API for this release are:

 - APIs to open and close a trace.dat file
    tracecmd_open()
    tracecmd_open_head()
    tracecmd_open_fd()
    tracecmd_close()

 - APIs to initialize and read tracing records from a trace.dat file
    tracecmd_init_data()
    tracecmd_read_cpu_first()
    tracecmd_read_data()
    tracecmd_read_at()
    tracecmd_free_record()

 - APIs to retrieve the libtracevent tep handler
    tracecmd_get_tep()

 - APIs to manage host and guest data mappings
    tracecmd_get_traceid()
    tracecmd_get_guest_cpumap()

 - APIs to manage the different instances existing in a trace.dat file
    tracecmd_buffer_instances()
    tracecmd_buffer_instance_name()
    tracecmd_buffer_instance_handle()

Many more APIs will come in later releases.

Enjoy!

-- Steve