From: Sven Schnelle <svens@stackframe.org>
Date: Sat, 9 Oct 2021 18:24:38 +0000 (+0200)
Subject: parisc: disable preemption in send_IPI_allbutself()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=1c2fb946cdb784b2f64e12b54f1e93685167049c;p=linux.git

parisc: disable preemption in send_IPI_allbutself()

Otherwise we might not stop all other CPUs.

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: Helge Deller <deller@gmx.de>
---

diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index 1405b603b91b6..3413e6949c872 100644
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -219,11 +219,13 @@ static inline void
 send_IPI_allbutself(enum ipi_message_type op)
 {
 	int i;
-	
+
+	preempt_disable();
 	for_each_online_cpu(i) {
 		if (i != smp_processor_id())
 			send_IPI_single(i, op);
 	}
+	preempt_enable();
 }