Re: [PATCH AUTOSEL 6.12 18/36] LoongArch/irq: Use seq_put_decimal_ull_width() for decimal values

On Wed, Dec 11 2024 at 13:49, Sasha Levin wrote:

From: David Wang 00107082@163.com

[ Upstream commit ad2a05a6d287aef7e069c06e329f1355756415c2 ]

Performance improvement for reading /proc/interrupts on LoongArch.

On a system with n CPUs and m interrupts, there will be n*m decimal values yielded via seq_printf(.."%10u "..) which is less efficient than seq_put_decimal_ull_width(), stress reading /proc/interrupts indicates ~30% performance improvement with this patch (and its friends).

Why is this stable material?

Thanks,

tglx