diff mbox series

[RFC,v3,07/12] arm64: smp: add arch specific cpu parking helper

Message ID 20191219121905.26905-8-cristian.marussi@arm.com (mailing list archive)
State New, archived
Headers show
Series Unify SMP stop generic logic to common code | expand

Commit Message

Cristian Marussi Dec. 19, 2019, 12:19 p.m. UTC 
Add an arm64 specific helper which parks the cpu in a more architecture
efficient way.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
---
 arch/arm64/kernel/smp.c | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index edb2de85507a..3f108be544f8 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -952,6 +952,12 @@  void tick_broadcast(const struct cpumask *mask)
 }
 #endif
 
+void arch_smp_cpu_park(void)
+{
+	while (1)
+		cpu_park_loop();
+}
+
 void arch_smp_cpus_stop_complete(void)
 {
 	sdei_mask_local_cpu();