Received-SPF: pass (google.com: domain of linux-kernel+bounces-75291-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) client-ip=147.75.80.249;
Date: Wed, 21 Feb 2024 13:26:51 -0500
From: Steven Rostedt <rostedt@goodmis.org>
To: Ankur Arora <ankur.a.arora@oracle.com>
Cc: linux-kernel@vger.kernel.org, tglx@linutronix.de, peterz@infradead.org,
 torvalds@linux-foundation.org, paulmck@kernel.org,
 akpm@linux-foundation.org, luto@kernel.org, bp@alien8.de,
 dave.hansen@linux.intel.com, hpa@zytor.com, mingo@redhat.com,
 juri.lelli@redhat.com, vincent.guittot@linaro.org, willy@infradead.org,
 mgorman@suse.de, jpoimboe@kernel.org, mark.rutland@arm.com,
 jgross@suse.com, andrew.cooper3@citrix.com, bristot@kernel.org,
 mathieu.desnoyers@efficios.com, geert@linux-m68k.org,
 glaubitz@physik.fu-berlin.de, anton.ivanov@cambridgegreys.com,
 mattst88@gmail.com, krypton@ulrich-teichert.org, David.Laight@ACULAB.COM,
 richard@nod.at, mjguzik@gmail.com, jon.grimm@amd.com, bharata@amd.com,
 raghavendra.kt@amd.com, boris.ostrovsky@oracle.com, konrad.wilk@oracle.com
Subject: Re: [PATCH 02/30] thread_info: selector for TIF_NEED_RESCHED[_LAZY]
Message-ID: <20240221132651.5d1b0a24@gandalf.local.home>
In-Reply-To: <20240213055554.1802415-3-ankur.a.arora@oracle.com>
References: <20240213055554.1802415-1-ankur.a.arora@oracle.com>
	<20240213055554.1802415-3-ankur.a.arora@oracle.com>
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit

On Mon, 12 Feb 2024 21:55:26 -0800
Ankur Arora <ankur.a.arora@oracle.com> wrote:

> +/*
> + * tif_resched(r) maps to TIF_NEED_RESCHED[_LAZY] with CONFIG_PREEMPT_AUTO.
> + *
> + * With !CONFIG_PREEMPT_AUTO, both tif_resched(NR_now) and tif_resched(NR_lazy)
> + * reduce to the same value (TIF_NEED_RESCHED) leaving any scheduling behaviour
> + * unchanged.
> + */
> +static inline int tif_resched(resched_t rs)
> +{
> +	return TIF_NEED_RESCHED + rs * TIF_NEED_RESCHED_LAZY_OFFSET;
> +}
> +
> +static inline int _tif_resched(resched_t rs)
> +{
> +	return 1 << tif_resched(rs);
> +}
> +

This may have been mentioned in another thread (don't remember) but please
make the above __always_inline, as that also matches tif_need_resched() as
it is today.

-- Steve