linux-kernel - Re: [PATCH -tip 0/4] perf-probe updates: string support, etc.

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Message-ID: <20100705174450.GB23506@ghostprotocols.net>
Date:	Mon, 5 Jul 2010 14:44:50 -0300
From:	Arnaldo Carvalho de Melo <acme@...hat.com>
To:	Chase Douglas <chase.douglas@...onical.com>
Cc:	Masami Hiramatsu <mhiramat@...hat.com>,
	Ingo Molnar <mingo@...e.hu>,
	lkml <linux-kernel@...r.kernel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Mike Galbraith <efault@....de>,
	Frederic Weisbecker <fweisbec@...il.com>,
	systemtap <systemtap@...rces.redhat.com>,
	DLE <dle-develop@...ts.sourceforge.net>
Subject: Re: [PATCH -tip 0/4] perf-probe updates: string support, etc.

Em Mon, Jul 05, 2010 at 10:30:47AM -0400, Chase Douglas escreveu:
> On May 19, 2010, at 3:57 PM, Masami Hiramatsu wrote:
> > Hi,
> > 
> > Here is a series of patches which improves perf probe to
> > add below features. I cleared some coding style issues.
> > 
> > - String support, which enables dynamic events to trace string
> >  variables instead of its address.
> > 
> > - Fixed-index array entry support, which allows user to trace
> >  an array entry with digit index, e.g. array[0].
> > 
> > - Global/static variable support, which allows user to trace
> >  global or static variables, as same as local one.
> > 
> > 
> > TODOs (possible features):
> >  - Support dynamic array-indexing (var[var2])
> >  - Support force type-casting ((type)var)
> >  - Show what deta-structure member is assigned to each argument.
> >  - Better support for probes on modules
> >  - More debugger like enhancements(%next, --disasm, etc.)
> > 
> > Thank you,
> > 
> > ---
> > 
> > Masami Hiramatsu (4):
> >      perf probe: Support static and global variables
> >      perf probe: Support tracing an entry of array
> >      perf probe: Support "string" type
> >      tracing/kprobes: Support "string" type
> 
> What's the status of these patches? They seem very useful to me, but I
> don't see them in Arnaldo's tree at git.kernel.org.

Thanks for reminding me about these ones, will look at them to get them
in perf/core.

- Arnaldo
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