linux-kernel - Re: [PATCH v5 1/8] smp: Run functions concurrently in smp_call_function_many

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Date:   Tue, 16 Feb 2021 13:06:08 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Nadav Amit <nadav.amit@...il.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org,
        Andy Lutomirski <luto@...nel.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Nadav Amit <namit@...are.com>, Rik van Riel <riel@...riel.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>
Subject: Re: [PATCH v5 1/8] smp: Run functions concurrently in
 smp_call_function_many_cond()

On Tue, Feb 09, 2021 at 02:16:46PM -0800, Nadav Amit wrote:
>  void smp_call_function_many(const struct cpumask *mask,
>  			    smp_call_func_t func, void *info, bool wait)
>  {
> +	smp_call_function_many_cond(mask, func, info, wait ? SCF_WAIT : 0, NULL);

	wait*SCF_WAIT

is shorter and sometimes generates better code

>  }
>  EXPORT_SYMBOL(smp_call_function_many);