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From: Manuel Selva <selva.manuel@gmail.com>
To: "linux-perf-users@vger.kernel.org" <linux-perf-users@vger.kernel.org>
Subject: Re: What is the exact meaning of this parameter ?
Date: Sat, 06 Jun 2015 09:20:48 +0200	[thread overview]
Message-ID: <55729F50.4030308@gmail.com> (raw)
In-Reply-To: <5565F6EB.3090406@gmail.com>

Any idea on that ?

Thanks,

----
Manu

On 05/27/2015 06:55 PM, Manuel Selva wrote:
> Hi all,
>
> I know that the perf_event_mlock_kb kernel parameter allows to limit the
> amount of counters sampling memory that can be mmap'ed by an unprivileged
> user.
>
> Nevertheless, playing with the size I give to mmap some memory using the
> file descriptor returned by perf_event_open I am not able to linkk with the
> perf_event_mlock_kb parameter. Looking into kernel sources, it seems this
> parameter is used in kernel/events/core.c where the perf mmap operation is
> defined but I am not sure to understand the code there. So my question is
> what is the exact meaning of this parameter ?
>
>

      reply	other threads:[~2015-06-06  7:20 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-27 16:55 What is the exact meaning of this parameter ? Manuel Selva
2015-06-06  7:20 ` Manuel Selva [this message]

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