linux-kernel - Re: [patch V4 part 1 03/36] sched: Clean up scheduler

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Message-ID: <87ftcdo29o.fsf@nanos.tec.linutronix.de>
Date:   Wed, 06 May 2020 11:12:35 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Borislav Petkov <bp@...en8.de>
Cc:     LKML <linux-kernel@...r.kernel.org>, x86@...nel.org,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Andy Lutomirski <luto@...nel.org>,
        Alexandre Chartre <alexandre.chartre@...cle.com>,
        Frederic Weisbecker <frederic@...nel.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Petr Mladek <pmladek@...e.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Joel Fernandes <joel@...lfernandes.org>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Juergen Gross <jgross@...e.com>,
        Brian Gerst <brgerst@...il.com>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Will Deacon <will@...nel.org>,
        "Peter Zijlstra \(Intel\)" <peterz@...radead.org>
Subject: Re: [patch V4 part 1 03/36] sched: Clean up scheduler_ipi()

Borislav Petkov <bp@...en8.de> writes:

> On Tue, May 05, 2020 at 03:16:05PM +0200, Thomas Gleixner wrote:
>> The scheduler IPI has grown weird and wonderful over the years, time
>> for spring cleaning.
>> 
>> Move all the non-trivial stuff out of it and into a regular smp function
>> call IPI. This then reduces the schedule_ipi() to most of it's former MOP
>
> s/MOP/NOP/ after clarifying it on IRC. :)

It was NOP long ago. Now it's Minimal OPeration :)