From: Wang Nan <wangnan0@huawei.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>, Jiri Olsa <jolsa@kernel.org>
Cc: 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>,
lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 7/7] perf data: Fix signess of value
Date: Tue, 21 Apr 2015 10:41:55 +0800 [thread overview]
Message-ID: <5535B8F3.8000306@huawei.com> (raw)
In-Reply-To: <20150420212314.GR11111@kernel.org>
On 2015/4/21 5:23, 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? :-)
>
> - Arnaldo
>
Sorry for the bad English. Please help me to fix it. Thank you.
next prev parent reply other threads:[~2015-04-21 2:47 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-18 15:50 [PATCHv6 0/7] perf tools: Add perf data CTF conversion Jiri Olsa
2015-04-18 15:50 ` [PATCH 1/7] perf data: Show error message when conversion failed Jiri Olsa
2015-05-06 2:55 ` [tip:perf/core] " tip-bot for He Kuang
2015-04-18 15:50 ` [PATCH 2/7] perf data: Switch to multiple cpu stream files Jiri Olsa
2015-04-20 19:58 ` Arnaldo Carvalho de Melo
2015-04-20 20:01 ` Arnaldo Carvalho de Melo
2015-04-20 20:19 ` Jiri Olsa
2015-04-20 20:41 ` Arnaldo Carvalho de Melo
2015-04-20 20:49 ` Arnaldo Carvalho de Melo
2015-05-06 2:57 ` [tip:perf/core] " tip-bot for Sebastian Andrzej Siewior
2015-04-18 15:50 ` [PATCH 3/7] perf data: Enable stream flush within processing Jiri Olsa
2015-05-06 2:57 ` [tip:perf/core] " tip-bot for Jiri Olsa
2015-04-18 15:50 ` [PATCH 4/7] perf data: Add support for setting ordered_events queue size Jiri Olsa
2015-05-06 2:57 ` [tip:perf/core] " tip-bot for Jiri Olsa
2015-04-18 15:50 ` [PATCH 5/7] tools lib traceevent: Add alias field to struct format_field Jiri Olsa
2015-04-20 14:24 ` Steven Rostedt
2015-05-06 2:55 ` [tip:perf/core] " tip-bot for Jiri Olsa
2015-04-18 15:50 ` [PATCH 6/7] perf data: Fix duplicate field names and avoid reserved keywords Jiri Olsa
2015-04-18 18:56 ` Jérémie Galarneau
2015-04-18 20:45 ` Jiri Olsa
2015-04-20 14:02 ` Arnaldo Carvalho de Melo
2015-05-06 2:57 ` [tip:perf/core] " tip-bot for Wang Nan
2015-04-18 15:50 ` [PATCH 7/7] perf data: Fix signess of value Jiri Olsa
2015-04-20 21:23 ` Arnaldo Carvalho de Melo
2015-04-20 21:52 ` Jiri Olsa
2015-04-21 2:41 ` Wang Nan [this message]
2015-04-21 14:25 ` Arnaldo Carvalho de Melo
2015-05-06 2:58 ` [tip:perf/core] perf data: Fix signedness " tip-bot for Wang Nan
2015-04-20 20:05 ` [PATCHv6 0/7] perf tools: Add perf data CTF conversion Arnaldo Carvalho de Melo
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