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Date:   Tue, 11 Oct 2022 18:22:03 +0200
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Subject: Re: [RFC PATCH 0/5] Generic IPI sending tracepoint
To:     Valentin Schneider <vschneid@redhat.com>
Cc:     linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org,
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        "David S. Miller" <davem@davemloft.net>,
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From:   Daniel Bristot de Oliveira <bristot@redhat.com>
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On 10/11/22 18:17, Valentin Schneider wrote:
> Thinking out loud, it makes way more sense to record a cpumask in the
> tracepoint, but perhaps we could have a postprocessing step to transform
> those into N events each targeting a single CPU?

My approach on the tracers/rtla is to make the simple things in kernel, and beautify
things in user-space.

You could keep the tracepoint as a mask, and then make it pretty, like cpus=3-5,8
in user-space. For example with a trace-cmd/perf loadable plugin, libtracefs helper.

For rtla I was thinking to make a new tool to parse them. and make it pretty there.

-- Daniel