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    SubjectRe: [RFC PATCH v2 2/3] tracefs: add instances support for uprobe events
    On Thu, 4 Aug 2016 01:46:04 +0530
    Aravinda Prasad <aravinda@linux.vnet.ibm.com> wrote:

    > On Thursday 04 August 2016 01:40 AM, Steven Rostedt wrote:
    > > On Thu, 4 Aug 2016 01:00:51 +0530
    > > Aravinda Prasad <aravinda@linux.vnet.ibm.com> wrote:
    > >
    > >>
    > >>> Can a container have its own function tracing?
    > >>
    > >> Sorry, I didn't understand that. Do you mean to have a separate
    > >> per-container trace files?
    > >
    > > Actually, it's more my ignorance of containers, as I haven't had the
    > > need to play with them. Although, I think it may be time to do so.
    > >
    > > When a container enters kernel mode, I'm assuming that it's part of the
    > > host at that moment, and the host needs to take care of separating
    > > everything? That is, there's not a "second kernel" like VMs have, right?
    >
    > Yes. The host needs to take care of separating everything. There is no
    > "second kernel".

    That's what I figured. Thus, my worry is that something like the
    function tracer can cause information leak to a container. How would
    you separate functions for the container from functions for the host?

    -- Steve

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