linux-kernel - Re: [GIT PULL 00/16] perf/core improvements and fixes

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Date:	Mon, 13 Feb 2012 22:23:07 -0700
From:	David Ahern <dsahern@...il.com>
To:	Namhyung Kim <namhyung.kim@....com>,
	Joerg Roedel <joerg.roedel@....com>
CC:	Namhyung Kim <namhyung@...il.com>, linux-kernel@...r.kernel.org,
	Ingo Molnar <mingo@...e.hu>, Andi Kleen <andi@...stfloor.org>,
	Anshuman Khandual <khandual@...ux.vnet.ibm.com>,
	Arun Sharma <asharma@...com>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jason Wang <jasowang@...hat.com>, Jiri Olsa <jolsa@...hat.com>,
	Lin Ming <ming.m.lin@...el.com>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Roberto Agostino Vitillo <ravitillo@....gov>,
	Robert Richter <robert.richter@....com>,
	Stephane Eranian <eranian@...gle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Vince Weaver <vweaver1@...s.utk.edu>, arnaldo.melo@...il.com,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [GIT PULL 00/16] perf/core improvements and fixes

On 2/13/12 10:10 PM, Namhyung Kim wrote:
>>
>
> It happened because I used old kernel version that isn't aware of the
> exclude_guest bit. So the check on attr->__reserved_1 in
> core.c::perf_copy_attr() failed and then ended up seeing EINVAL at
> perf_evsel__open().

comes back to 1aed2671738785e8f5aea663a6fda91aa7ef59b5 again. See

https://lkml.org/lkml/2012/2/8/234

>
> So I think it should be handled in the same way of handling
> sample_id_all bit in perf record and top if we want to set perf_guest to
> false by default. I'll send patches for them soon.
>
> Thanks,
> Namhyung

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