linux-kernel - Re: [PATCH] tracing/osnoise: Force quiescent states while tracing

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Message-ID: <a4fa8045-64f9-5550-7f03-b6819aeeb6c4@kernel.org>
Date:   Tue, 1 Mar 2022 18:30:07 +0100
From:   Daniel Bristot de Oliveira <bristot@...nel.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     paulmck@...nel.org, mingo@...hat.com, linux-kernel@...r.kernel.org,
        mtosatti@...hat.com, Nicolas Saenz Julienne <nsaenzju@...hat.com>
Subject: Re: [PATCH] tracing/osnoise: Force quiescent states while tracing

On 3/1/22 11:59, Nicolas Saenz Julienne wrote:
>> I wonder if this is similar to what we have in trace_benchmark(). Would
>> using: cond_resched_tasks_rcu_qs() work for you?
> IIUC this only affects tasks_rcu, and doesn't help with regular RCU. We already
> call cond_resched_tasks_rcu_qs() in osnoise when necesary, actually it was
> introduced by you. :)

I tried using cond_resched_tasks_rcu_qs() to solve the same problem before, it
did not work.

-- Daniel