From: Tiezhu Yang <yangtiezhu@loongson.cn>
To: Huacai Chen <chenhuacai@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Arnd Bergmann <arnd@arndb.de>, Marc Zyngier <maz@kernel.org>
Cc: loongarch@lists.linux.dev, linux-kernel@vger.kernel.org,
loongson-kernel@lists.loongnix.cn
Subject: [PATCH v2 3/3] irqchip: Set CPU affinity only on SMP machines for LoongArch
Date: Tue, 26 Mar 2024 20:11:30 +0800 [thread overview]
Message-ID: <20240326121130.16622-4-yangtiezhu@loongson.cn> (raw)
In-Reply-To: <20240326121130.16622-1-yangtiezhu@loongson.cn>
According to the code comment of "struct irq_chip" in include/linux/irq.h,
the member "irq_set_affinity" is to set the CPU affinity on SMP machines,
so define and call eiointc_set_irq_affinity() only under CONFIG_SMP.
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
---
drivers/irqchip/irq-loongson-eiointc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/irqchip/irq-loongson-eiointc.c b/drivers/irqchip/irq-loongson-eiointc.c
index b64cbe3052e8..4f5e6d21d77d 100644
--- a/drivers/irqchip/irq-loongson-eiointc.c
+++ b/drivers/irqchip/irq-loongson-eiointc.c
@@ -59,6 +59,7 @@ static int cpu_to_eio_node(int cpu)
return cpu_logical_map(cpu) / CORES_PER_EIO_NODE;
}
+#ifdef CONFIG_SMP
static void eiointc_set_irq_route(int pos, unsigned int cpu, unsigned int mnode, nodemask_t *node_map)
{
int i, node, cpu_node, route_node;
@@ -126,6 +127,7 @@ static int eiointc_set_irq_affinity(struct irq_data *d, const struct cpumask *af
return IRQ_SET_MASK_OK;
}
+#endif
static int eiointc_index(int node)
{
@@ -238,7 +240,9 @@ static struct irq_chip eiointc_irq_chip = {
.irq_ack = eiointc_ack_irq,
.irq_mask = eiointc_mask_irq,
.irq_unmask = eiointc_unmask_irq,
+#ifdef CONFIG_SMP
.irq_set_affinity = eiointc_set_irq_affinity,
+#endif
};
static int eiointc_domain_alloc(struct irq_domain *domain, unsigned int virq,
--
2.42.0
prev parent reply other threads:[~2024-03-26 12:11 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-26 12:11 [PATCH v2 0/3] Give chance to build under !CONFIG_SMP for LoongArch Tiezhu Yang
2024-03-26 12:11 ` [PATCH v2 1/3] LoongArch: Give chance to build under !CONFIG_SMP Tiezhu Yang
2024-03-26 12:11 ` [PATCH v2 2/3] irqchip: Select GENERIC_IRQ_EFFECTIVE_AFF_MASK if SMP for IRQ_LOONGARCH_CPU Tiezhu Yang
2024-03-26 12:11 ` Tiezhu Yang [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240326121130.16622-4-yangtiezhu@loongson.cn \
--to=yangtiezhu@loongson.cn \
--cc=arnd@arndb.de \
--cc=chenhuacai@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=loongarch@lists.linux.dev \
--cc=loongson-kernel@lists.loongnix.cn \
--cc=maz@kernel.org \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).