blob: 0c8b0e14edc7d6ee4d283e63b2a27af8094c55b3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
From d379a82e852964afe457dcf44bf4a00fc59de389 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 29 Apr 2022 11:02:18 -0500
Subject: [PATCH 346/347] genirq: Add lost hunk to irq_forced_thread_fn().
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz
The irq_settings_no_softirq_call() related handling got lost in process,
here are the missing bits.
Reported-by: Martin Kaistra <martin.kaistra@linutronix.de>
Fixes: b0cf5c230e2a0 ("Merge tag 'v4.19.183' into linux-4.19.y-rt")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Clark Williams <williams@redhat.com>
---
kernel/irq/manage.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 6c88d81399dd..8f710f1755d8 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -998,7 +998,15 @@ irq_forced_thread_fn(struct irq_desc *desc, struct irqaction *action)
irq_finalize_oneshot(desc, action);
if (!IS_ENABLED(CONFIG_PREEMPT_RT_BASE))
local_irq_enable();
- local_bh_enable();
+ /*
+ * Interrupts which have real time requirements can be set up
+ * to avoid softirq processing in the thread handler. This is
+ * safe as these interrupts do not raise soft interrupts.
+ */
+ if (irq_settings_no_softirq_call(desc))
+ _local_bh_enable();
+ else
+ local_bh_enable();
return ret;
}
--
2.36.1
|
