linux-kernel - Re: [PATCH v8 5/8] entry: Add arch_irqentry_exit_need

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Message-ID: <9974c597-cc03-42d2-ba3a-3dd05f1a782c@arm.com>
Date: Thu, 21 Aug 2025 17:24:46 +0100
From: Ada Couprie Diaz <ada.coupriediaz@....com>
To: Jinjie Ruan <ruanjinjie@...wei.com>
Cc: catalin.marinas@....com, will@...nel.org, oleg@...hat.com,
 sstabellini@...nel.org, mark.rutland@....com, mbenes@...e.cz,
 broonie@...nel.org, anshuman.khandual@....com, ryan.roberts@....com,
 chenl311@...natelecom.cn, liaochang1@...wei.com, kristina.martsenko@....com,
 leitao@...ian.org, ardb@...nel.org, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org, xen-devel@...ts.xenproject.org,
 Ada Couprie Diaz <ada.coupriediaz@....com>
Subject: Re: [PATCH v8 5/8] entry: Add arch_irqentry_exit_need_resched() for
 arm64

Hello,

On 15/08/2025 04:06, Jinjie Ruan wrote:
> Compared to the generic entry code, ARM64 does additional checks
> when deciding to reschedule on return from interrupt. So introduce
> arch_irqentry_exit_need_resched() in the need_resched()
> condition of the generic raw_irqentry_exit_cond_resched(), with
> a NOP default. This will allow ARM64 to implement the architecture
> specific version for switching over to the generic entry code.
>
> Suggested-by: Ada Couprie Diaz <ada.coupriediaz@....com>
> Suggested-by: Mark Rutland <mark.rutland@....com>
> Suggested-by: Kevin Brodsky <kevin.brodsky@....com>
> Suggested-by: Thomas Gleixner <tglx@...utronix.de>
> Signed-off-by: Jinjie Ruan <ruanjinjie@...wei.com>
> ---
Looks good to me, thanks for the changes ! Reviewed-by: Ada Couprie Diaz 
<ada.coupriediaz@....com>