linux-kernel - [PATCH] genirq/proc: Show percpu irq affinity

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Message-ID: <fcb0ae13-95b0-37d3-c1f9-44727e0f2ce8@huawei.com>
Date:   Mon, 10 Aug 2020 10:29:50 +0800
From:   Yunfeng Ye <yeyunfeng@...wei.com>
To:     <tglx@...utronix.de>
CC:     <linux-kernel@...r.kernel.org>, Shiyuan Hu <hushiyuan@...wei.com>,
        Hewenliang <hewenliang4@...wei.com>
Subject: [PATCH] genirq/proc: Show percpu irq affinity

When the "affinity=" cmdline parameter is configured, the interrupt
affinity displayed in the proc directory does not match with that of the
the percu interrupt, and the percu interrupt uses desc->percu_affinity.

So show desc->percu_affinity in show_irq_affinity() for percpu
interrupt.

Signed-off-by: yeyunfeng <yeyunfeng@...wei.com>
---
 kernel/irq/proc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c
index 32c071d7bc03..b9d0fa87b4b4 100644
--- a/kernel/irq/proc.c
+++ b/kernel/irq/proc.c
@@ -52,6 +52,8 @@ static int show_irq_affinity(int type, struct seq_file *m)
 	case AFFINITY:
 	case AFFINITY_LIST:
 		mask = desc->irq_common_data.affinity;
+		if (irqd_is_per_cpu(&desc->irq_data))
+			mask = desc->percpu_affinity;
 #ifdef CONFIG_GENERIC_PENDING_IRQ
 		if (irqd_is_setaffinity_pending(&desc->irq_data))
 			mask = desc->pending_mask;
-- 
1.8.3.1