Date: Mon, 20 Apr 2015 23:52:22 +0200
From: Jiri Olsa <jolsa@redhat.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>, David Ahern <dsahern@gmail.com>,
        Frederic Weisbecker <fweisbec@gmail.com>,
        He Kuang <hekuang@huawei.com>, Ingo Molnar <mingo@kernel.org>,
        Jeremie Galarneau <jgalar@efficios.com>,
        Namhyung Kim <namhyung@kernel.org>, Paul Mackerras <paulus@samba.org>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
        Tom Zanussi <tzanussi@gmail.com>, Wang Nan <wangnan0@huawei.com>,
        lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 7/7] perf data: Fix signess of value
Message-ID: <20150420215222.GG10644@krava.redhat.com>
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 <20150420212314.GR11111@kernel.org>
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On Mon, Apr 20, 2015 at 06:23:14PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Sat, Apr 18, 2015 at 05:50:20PM +0200, Jiri Olsa escreveu:
> > From: Wang Nan <wangnan0@huawei.com>
> > 
> > When converting int values, perf first extractes it to a ulonglong, then
> > feeds it to babeltrace as a signed value. For negative 32 bit values
> > (for example, return values of failed syscalls), the extracted data
> > should be something like 0xfffffffe (-2). It becomes a large int64
> > value. Babeltrace denies to insert it with
> > bt_ctf_field_signed_integer_set_value() because it is larger than
> > 0x7fffffff, the largest positive value a signed 32 bit int can be.
> 
> There is no such word "signess", it is "signedness", fixing this up.
> Humm, it seems there is such a word indeed:
> 
> http://www.urbandictionary.com/define.php?term=Signess
> 
> But I bet this is the one we want:
> 
> http://en.wikipedia.org/wiki/Signedness
> 
> Right? :-)

right ;-) thanks

jirka
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