linux-kernel - Re: [PATCH -tip 00/10] perf-probe updates

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: <20100317103450.GJ17146@elte.hu>
Date:	Wed, 17 Mar 2010 11:34:50 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Masami Hiramatsu <mhiramat@...hat.com>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	systemtap <systemtap@...rces.redhat.com>,
	DLE <dle-develop@...ts.sourceforge.net>
Subject: Re: [PATCH -tip 00/10] perf-probe updates - data-structure support,
 etc.


* Masami Hiramatsu <mhiramat@...hat.com> wrote:

> Hi Ingo,
> 
> Here are several updates of perf-probe.
> This updates includes data structure accessing support
> --list option enhancement and --dry-run option support.
> 
> - --dry-run allows users to run perf-probe just for checking
>   that the command works correctly.
> 
> - --list option enhancement allows user to check where the
>   probes are put on (with filename/line number).
> 
> - data structure accessing support allows user to trace
>   the contents of local variables/function parameters.

Very nice! I think tracing a data structure value at a given point in the 
source will be a rather popular feature.

> Long-term TODOs (future features):
>   - Enhance probe-finder to decode call frame instructions.
>   - Support tracing static variables (non global)
>   - Support variable basic types from debuginfo (e.g. char, int, ...)
>   - Support array element (var[N])
>   - Support string/dynamic arrays (*var, var[N..M])
>   - Support the type of return value
>   - Support force type-casting ((type)var)
>   - Support sys_perf_counter_open (for non-root users)
>   - Support dynamic array-indexing (var[var2])
> 
> Miscs:
>   - Better support for probes on modules
>   - More debugger like enhancements(%next, --disasm, etc.)

Sounds good :-)

> Masami Hiramatsu (10):
>       perf probe: Accessing members in data structures
>       perf probe: List probes with line number and file name
>       perf probe: Introduce kprobe_trace_event and perf_probe_event
>       perf probe: Add --dry-run option
>       perf probe: Introduce die_find_child() function
>       perf probe: Rename some die_get_* functions
>       perf probe: Rename session to param
>       perf probe: Move add-probe routine under util/
>       perf probe: Use wrapper functions
>       perf tools: Introduce xzalloc() for detecting out of memory
> 
> 
>  tools/perf/Documentation/perf-probe.txt |    5 
>  tools/perf/builtin-probe.c              |  191 +------
>  tools/perf/util/probe-event.c           |  830 +++++++++++++++++++++++--------
>  tools/perf/util/probe-event.h           |  123 ++++-
>  tools/perf/util/probe-finder.c          |  459 ++++++++++++-----
>  tools/perf/util/probe-finder.h          |   60 +-
>  tools/perf/util/util.h                  |    7 
>  7 files changed, 1115 insertions(+), 560 deletions(-)

Applied, thanks!

	Ingo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/