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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Huacai Chen <chenhuacai@loongson.cn>
Cc: Huacai Chen <chenhuacai@kernel.org>, Xuerui Wang <kernel@xen0n.name>,
	loongarch@lists.linux.dev, Clark Williams <clrkwllms@kernel.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	linux-rt-devel@lists.linux.dev, Guo Ren <guoren@kernel.org>,
	Jiaxun Yang <jiaxun.yang@flygoat.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/3] LoongArch: Reduce min_delta for the arch clockevent
 device
Message-ID: <20241114102136.X-knc36J@linutronix.de>
References: <20241108091545.4182229-1-chenhuacai@loongson.cn>
 <20241108091545.4182229-2-chenhuacai@loongson.cn>
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In-Reply-To: <20241108091545.4182229-2-chenhuacai@loongson.cn>

On 2024-11-08 17:15:43 [+0800], Huacai Chen wrote:
> Now the min_delta is 0x600 (1536) for LoongArch's constant clockevent
> device. For a 100MHz hardware timer this means ~15us. This is a little
> big, especially for PREEMPT_RT enabled kernels. So reduce it to 1000
> (we don't want too small values to affect performance).

So this reduces it to 10us. Is anything lower than that bad performance
wise?

> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

Sebastian