linux-kernel - Re: [PATCH v9 3.2 7/9] tracing: uprobes trace

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Message-ID: <20120117110345.GC15447@linux.vnet.ibm.com>
Date:	Tue, 17 Jan 2012 16:33:45 +0530
From:	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Jiri Olsa <jolsa@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux-mm <linux-mm@...ck.org>, Andi Kleen <andi@...stfloor.org>,
	Christoph Hellwig <hch@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Roland McGrath <roland@...k.frob.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Anton Arapov <anton@...hat.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Jim Keniston <jkenisto@...ux.vnet.ibm.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>
Subject: Re: [PATCH v9 3.2 7/9] tracing: uprobes trace_event interface

* Ingo Molnar <mingo@...e.hu> [2012-01-17 11:59:16]:

> 
> btw., i'd write the CONFIG_UPROBE_EVENT .config help text:
> 
>  This allows the user to add tracing events on top of userspace
>  dynamic events (similar to tracepoints) on the fly via the
>  traceevents interface. Those events can be inserted wherever 
>  uprobes can probe, and record various registers.
> 
>  This option is required if you plan to use perf-probe 
>  subcommand of perf tools on user space applications.
> 
> In a clearer form:
> 
>  This allows the user to add user-space dynamic events on the 
>  fly, similar to tracepoints. These events can be inserted
>  into just about any user-space code transparently, and can 
>  record register state there on the fly, which is then used by
>  instrumentation tools.
> 
>  This option is required if you plan to use the "perf probe"
>  subcommand of the perf tool on user space applications.
> 

Okay, Will change as suggested.

-- 
Thanks and Regards
Srikar

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