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From: Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Dario Faggioli <dfaggioli@suse.com>,
	Linux Trace Devel <linux-trace-devel@vger.kernel.org>
Subject: Re: [PATCH v2] trace-cmd: Find PID of host-guest task from tracing vsock connection
Date: Fri, 7 May 2021 07:20:15 +0300	[thread overview]
Message-ID: <CAPpZLN48irG2cuPZi4+RAORbkxpnHudNf1wdXBdjYDmr4e8bhw@mail.gmail.com> (raw)
In-Reply-To: <20210506214012.741cbbd7@oasis.local.home>

On Fri, May 7, 2021 at 5:12 AM Steven Rostedt <rostedt@goodmis.org> wrote:
>
> On Fri, 07 May 2021 02:32:05 +0200
> Dario Faggioli <dfaggioli@suse.com> wrote:
>
> > What am I missing?
>
> When you have 10 guests running, and you are only tracing one. How do
> you know which guest that kvm exit was for?
>

As Dario said, we can get the guest from the /proc/{kvm_exit task
ID}/status - the Tgid written there is the guest, the host task which
runs that guest.

> -- Steve



-- 
Tzvetomir (Ceco) Stoyanov
VMware Open Source Technology Center

  reply	other threads:[~2021-05-07  4:20 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-06 21:14 Steven Rostedt
2021-05-07  0:32 ` Dario Faggioli
2021-05-07  1:40   ` Steven Rostedt
2021-05-07  4:20     ` Tzvetomir Stoyanov [this message]
2021-05-07 11:58       ` Steven Rostedt
2021-05-07 12:48         ` Dario Faggioli
2021-05-07 13:13           ` Steven Rostedt

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