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Date:   Thu, 6 Apr 2023 22:16:52 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Ankur Arora <ankur.a.arora@oracle.com>
Cc:     linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org,
        torvalds@linux-foundation.org, akpm@linux-foundation.org,
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        willy@infradead.org, mgorman@suse.de, rostedt@goodmis.org,
        tglx@linutronix.de, vincent.guittot@linaro.org, jon.grimm@amd.com,
        bharata@amd.com, boris.ostrovsky@oracle.com, konrad.wilk@oracle.com
Subject: Re: [PATCH 8/9] irqentry: define irqentry_exit_allow_resched()
Message-ID: <20230406201652.GA409443@hirez.programming.kicks-ass.net>
References: <20230403052233.1880567-1-ankur.a.arora@oracle.com>
 <20230403052233.1880567-9-ankur.a.arora@oracle.com>
 <20230405202240.GE365912@hirez.programming.kicks-ass.net>
 <87o7o1lzko.fsf@oracle.com>
 <20230406201359.GC405948@hirez.programming.kicks-ass.net>
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On Thu, Apr 06, 2023 at 10:13:59PM +0200, Peter Zijlstra wrote:
> +void irqentry_exit_cond_resched_tif(void)
> +{
> +#ifdef TIF_RESCHED_ALLOW
> +	if (resched_allowed()) {
> +		/* Sanity check RCU and thread stack */
> +		rcu_irq_exit_check_preempt();
> +		if (IS_ENABLED(CONFIG_DEBUG_ENTRY))
> +			WARN_ON_ONCE(!on_thread_stack());
> +		if (need_resched())
> +			preempt_schedule_irq();

arguably this can simply call raw_irqentry_exit_cond_resched_tif()..
probably better than duplicating all that again.

> +	}
> +#endif
> +}