linux-kernel - Re: [PATCH v2 0/7] perf ctf: Convert comm, fork and exit events to CTF

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20160624122851.GE10142@krava>
Date:	Fri, 24 Jun 2016 14:28:51 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Wang Nan <wangnan0@...wei.com>
Cc:	acme@...nel.org, linux-kernel@...r.kernel.org, pi3orama@....com,
	lizefan@...wei.com
Subject: Re: [PATCH v2 0/7] perf ctf: Convert comm, fork and exit events to
 CTF

On Fri, Jun 24, 2016 at 11:22:05AM +0000, Wang Nan wrote:
> After converting perf.data to CTF, we lost pid-tid-comm mapping. Which
> makes inconvience. For example, in perf script output we know which
> process issue an event like this:
> 
>  compiz 19361 [001] 3275709.313929:  raw_syscalls:sys_exit: NR 7 = 0
> 
> After converting to CTF, we only get this:
> 
>   [3275709.313929985] (+0.110646118) raw_syscalls:sys_exit: { cpu_id = 1 }, { perf_ip = 0xFFFFFFFF8107B2E8, perf_tid = 19361, perf_pid = 19361, perf_id = 18920, perf_period = 1, common_type = 16, common_flags = 0, common_preempt_count = 1, common_pid = 19361, id = 7, ret = 0 }
> 
> Currently, if we want to find the name and parent of a process, we
> have to collect 'sched:sched_switch' event.
> 
> This patch set adds a '--all' option to 'perf convert', converts comm,
> fork and exit events to CTF output. CTF user now can track the mapping
> by their own.
> 
> v1 -> v2: Report number of sample and non-sample events when finish.
>           rename opts.non_sample to opts.all.
> 
> Wang Nan (7):
>   perf ctf: Add value_set_string() helper
>   perf ctf: Pass convert options through opts structure
>   perf ctf: Add 'all' option
>   perf ctf: Prepare collect non-sample events
>   perf ctf: Generate comm event to CTF output
>   perf ctf: Add '--all' option for 'perf data convert'
>   perf ctf: Generate fork and exit events to CTF output

Acked-by: Jiri Olsa <jolsa@...nel.org>

thanks,
jirka