From: Ryo Takakura <ryotkkr98@gmail.com>
To: catalin.marinas@arm.com, will@kernel.org, bigeasy@linutronix.de,
clrkwllms@kernel.org, rostedt@goodmis.org, leitao@debian.org,
mark.rutland@arm.com, ardb@kernel.org
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-rt-devel@lists.linux.dev,
Ryo Takakura <ryotkkr98@gmail.com>
Subject: [PATCH] arm64: use SOFTIRQ_ON_OWN_STACK for enabling softirq stack
Date: Mon, 13 Oct 2025 01:35:08 +0000 [thread overview]
Message-ID: <20251013013508.74677-1-ryotkkr98@gmail.com> (raw)
For those architectures with HAVE_SOFTIRQ_ON_OWN_STACK use
their dedicated softirq stack when !PREEMPT_RT. This condition
is ensured by SOFTIRQ_ON_OWN_STACK.
Let arm64 use SOFTIRQ_ON_OWN_STACK as well to select its
usage of the stack.
Signed-off-by: Ryo Takakura <ryotkkr98@gmail.com>
---
arch/arm64/kernel/irq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kernel/irq.c b/arch/arm64/kernel/irq.c
index c0065a1d77cf..15dedb385b9e 100644
--- a/arch/arm64/kernel/irq.c
+++ b/arch/arm64/kernel/irq.c
@@ -62,7 +62,7 @@ static void __init init_irq_stacks(void)
}
}
-#ifndef CONFIG_PREEMPT_RT
+#ifdef CONFIG_SOFTIRQ_ON_OWN_STACK
static void ____do_softirq(struct pt_regs *regs)
{
__do_softirq();
--
2.34.1
next reply other threads:[~2025-10-13 1:35 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-13 1:35 Ryo Takakura [this message]
2025-10-13 6:27 ` Sebastian Andrzej Siewior
2025-11-04 13:58 ` Will Deacon
2025-11-05 7:33 ` Ryo Takakura
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