[patch 07/66] ARM: mvebu: Convert to hotplug state machine
From: Anna-Maria Gleixner
Date: Mon Jul 11 2016 - 08:47:56 EST
From: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Install the callbacks via the state machine.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Cc: Andrew Lunn <andrew@xxxxxxx>
Cc: Gregory Clement <gregory.clement@xxxxxxxxxxxxxxxxxx>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@xxxxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Anna-Maria Gleixner <anna-maria@xxxxxxxxxxxxx>
---
arch/arm/mach-mvebu/coherency.c | 19 ++++++-------------
include/linux/cpuhotplug.h | 1 +
2 files changed, 7 insertions(+), 13 deletions(-)
--- a/arch/arm/mach-mvebu/coherency.c
+++ b/arch/arm/mach-mvebu/coherency.c
@@ -111,20 +111,12 @@ static struct notifier_block mvebu_hwcc_
.notifier_call = mvebu_hwcc_notifier,
};
-static int armada_xp_clear_shared_l2_notifier_func(struct notifier_block *nfb,
- unsigned long action, void *hcpu)
+static int armada_xp_clear_l2_starting(unsigned int cpu)
{
- if (action == CPU_STARTING || action == CPU_STARTING_FROZEN)
- armada_xp_clear_shared_l2();
-
- return NOTIFY_OK;
+ armada_xp_clear_shared_l2();
+ return 0;
}
-static struct notifier_block armada_xp_clear_shared_l2_notifier = {
- .notifier_call = armada_xp_clear_shared_l2_notifier_func,
- .priority = 100,
-};
-
static void __init armada_370_coherency_init(struct device_node *np)
{
struct resource res;
@@ -155,8 +147,9 @@ static void __init armada_370_coherency_
of_node_put(cpu_config_np);
- register_cpu_notifier(&armada_xp_clear_shared_l2_notifier);
-
+ cpuhp_setup_state_nocalls(CPUHP_AP_ARM_MVEBU_COHERENCY,
+ "AP_ARM_MVEBU_COHERENCY",
+ armada_xp_clear_l2_starting, NULL);
exit:
set_cpu_coherent();
}
--- a/include/linux/cpuhotplug.h
+++ b/include/linux/cpuhotplug.h
@@ -15,6 +15,7 @@ enum cpuhp_state {
CPUHP_AP_IRQ_ARMADA_XP_STARTING,
CPUHP_AP_IRQ_ARMADA_CASC_STARTING,
CPUHP_AP_IRQ_BCM2836_STARTING,
+ CPUHP_AP_ARM_MVEBU_COHERENCY,
CPUHP_AP_NOTIFY_STARTING,
CPUHP_AP_ONLINE,
CPUHP_TEARDOWN_CPU,