From: Sven Schnelle <svens@stackframe.org>
To: deller@gmx.de
Cc: linux-parisc@vger.kernel.org
Subject: [PATCH 3/4] parisc: disable preemption in send_IPI_allbutself()
Date: Fri, 8 Oct 2021 22:48:25 +0200 [thread overview]
Message-ID: <20211008204825.6229-4-svens@stackframe.org> (raw)
In-Reply-To: <20211008204825.6229-1-svens@stackframe.org>
Otherwise we might not stop all other CPUs.
Signed-off-by: Sven Schnelle <svens@stackframe.org>
---
arch/parisc/kernel/smp.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index 1405b603b91b..3413e6949c87 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();
}
--
2.33.0
next prev parent reply other threads:[~2021-10-08 20:48 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-08 20:48 [PATCH 0/4] parisc: fixes for CONFIG_PREEMPT Sven Schnelle
2021-10-08 20:48 ` [PATCH 1/4] parisc: disable preemption during local tlb flush Sven Schnelle
2021-10-08 21:35 ` Sven Schnelle
2021-10-09 12:30 ` Helge Deller
2021-10-08 20:48 ` [PATCH 2/4] parisc: fix preempt_count() check in entry.S Sven Schnelle
2021-10-08 20:48 ` Sven Schnelle [this message]
2021-10-08 20:48 ` [PATCH 4/4] parisc: fix warning in flush_tlb_all Sven Schnelle
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