[RFC,v2,12/12] sparc64: smp: use generic SMP stop common code
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Message ID 20190913181953.45748-13-cristian.marussi@arm.com
State New
Headers show
Series
  • Unify SMP stop generic logic to common code
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Commit Message

Cristian Marussi Sept. 13, 2019, 6:19 p.m. UTC
Make sparc64 use the generic SMP-stop logic provided by common code
unified smp_send_stop() function.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
---
 arch/sparc/Kconfig         |  1 +
 arch/sparc/kernel/smp_64.c | 15 ++++++++-------
 2 files changed, 9 insertions(+), 7 deletions(-)

Patch
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diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 7926a2e11bdc..67d8bb741378 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -95,6 +95,7 @@  config SPARC64
 	select ARCH_HAS_PTE_SPECIAL
 	select PCI_DOMAINS if PCI
 	select ARCH_HAS_GIGANTIC_PAGE
+	select ARCH_USE_COMMON_SMP_STOP
 
 config ARCH_DEFCONFIG
 	string
diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
index a8275fea4b70..759e5fd867c5 100644
--- a/arch/sparc/kernel/smp_64.c
+++ b/arch/sparc/kernel/smp_64.c
@@ -1537,7 +1537,12 @@  static void stop_this_cpu(void *dummy)
 	prom_stopself();
 }
 
-void smp_send_stop(void)
+void arch_smp_cpus_stop_complete(void)
+{
+	smp_call_function(stop_this_cpu, NULL, 0);
+}
+
+void arch_smp_stop_call(cpumask_t *cpus, unsigned int __unused)
 {
 	int cpu;
 
@@ -1546,10 +1551,7 @@  void smp_send_stop(void)
 #ifdef CONFIG_SERIAL_SUNHV
 		sunhv_migrate_hvcons_irq(this_cpu);
 #endif
-		for_each_online_cpu(cpu) {
-			if (cpu == this_cpu)
-				continue;
-
+		for_each_cpu(cpu, cpus) {
 			set_cpu_online(cpu, false);
 #ifdef CONFIG_SUN_LDOMS
 			if (ldom_domaining_enabled) {
@@ -1562,8 +1564,7 @@  void smp_send_stop(void)
 #endif
 				prom_stopcpu_cpuid(cpu);
 		}
-	} else
-		smp_call_function(stop_this_cpu, NULL, 0);
+	}
 }
 
 /**