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From: Shay Drory <shayd@nvidia.com>
To: <tglx@linutronix.de>
Cc: <linux-kernel@vger.kernel.org>, Shay Drory <shayd@nvidia.com>
Subject: [PATCH] genirq: Honor user provided affinity
Date: Tue, 6 Aug 2024 10:20:44 +0300	[thread overview]
Message-ID: <20240806072044.837827-1-shayd@nvidia.com> (raw)

Currently, whenever user is providing affinity for an IRQ, genirq layer
is ignoring it and assigning the default affinity for the IRQ.
Fix it by honor the user input.

Fixes: 45ddcecbfa94 ("genirq: Use affinity hint in irqdesc allocation")
Signed-off-by: Shay Drory <shayd@nvidia.com>
---
 kernel/irq/irqdesc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 07e99c936ba5..1dee88ba0ae4 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -530,6 +530,7 @@ static int alloc_descs(unsigned int start, unsigned int cnt, int node,
 				flags = IRQD_AFFINITY_MANAGED |
 					IRQD_MANAGED_SHUTDOWN;
 			}
+			flags |= IRQD_AFFINITY_SET;
 			mask = &affinity->mask;
 			node = cpu_to_node(cpumask_first(mask));
 			affinity++;
-- 
2.38.1


             reply	other threads:[~2024-08-06  7:21 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-08-06  7:20 Shay Drory [this message]
2024-08-07 15:32 ` [tip: irq/urgent] genirq/irqdesc: Honor caller provided affinity in alloc_desc() tip-bot2 for Shay Drory

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