From: "zhangwei(Jovi)" <jovi.zhangwei@huawei.com>
To: Jonathan Corbet <corbet@lwn.net>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [ANNOUNCE] ktap 0.1 released
Date: Wed, 22 May 2013 11:29:41 +0800 [thread overview]
Message-ID: <519C3BA5.1070109@huawei.com> (raw)
In-Reply-To: <20130521161903.333d7e74@lwn.net>
On 2013/5/22 6:19, Jonathan Corbet wrote:
> On Tue, 21 May 2013 11:56:14 +0800
> "zhangwei(Jovi)" <jovi.zhangwei@huawei.com> wrote:
>
>> we welcome bug reports and fixes for the issues.
>
> I'm messing with it...first impression:
>
> unable create tracepoint event sys_enter_mmap on cpu 4, err: -19
> unable create tracepoint event sys_enter_mmap on cpu 5, err: -19
> unable create tracepoint event sys_enter_mmap on cpu 6, err: -19
> unable create tracepoint event sys_enter_mmap on cpu 7, err: -19
> [...]
>
> Unsurprising, this is a four-core system. The code reads:
>
>> for_each_possible_cpu(cpu)
>> enable_tracepoint_on_cpu(cpu, &attr, call, arg, type);
>
> Maybe that needs to be for_each_online_cpu() instead?
>
Jon, Really thank you for this bug report, fixed it as your suggestion.
.jovi
next prev parent reply other threads:[~2013-05-22 3:30 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-21 3:56 [ANNOUNCE] ktap 0.1 released zhangwei(Jovi)
2013-05-21 18:13 ` Frank Ch. Eigler
2013-05-24 3:17 ` zhangwei(Jovi)
2013-05-21 22:19 ` Jonathan Corbet
2013-05-22 3:29 ` zhangwei(Jovi) [this message]
2013-05-22 4:15 ` Ming Lei
2013-05-22 4:19 ` Ming Lei
2013-05-22 4:34 ` Ming Lei
2013-05-22 7:00 ` zhangwei(Jovi)
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