From 29d7bbada98e0969dd2ea159104aa55052a1c439 Mon Sep 17 00:00:00 2001 From: Anna-Maria Gleixner Date: Sun, 27 Nov 2016 00:13:31 +0100 Subject: [PATCH] intel_idle: Remove superfluous SMP fuction call Since commit 1cf4f629d9d2 ("cpu/hotplug: Move online calls to hotplugged cpu") the CPU_ONLINE and CPU_DOWN_PREPARE notifiers are always run on the hot plugged CPU, and as of commit 3b9d6da67e11 ("cpu/hotplug: Fix rollback during error-out in __cpu_disable()") the CPU_DOWN_FAILED notifier also runs on the hot plugged CPU. This patch converts the SMP functional calls into direct calls. smp_function_call_single() executes the function with interrupts disabled. This calling convention is not preserved, because tick_broadcast_enable() and tick_braodcast_disable() handle interrupts themselves. Signed-off-by: Anna-Maria Gleixner Signed-off-by: Sebastian Andrzej Siewior Acked-by: Jacob Pan Signed-off-by: Rafael J. Wysocki --- drivers/idle/intel_idle.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c index d6377c16b3f8f..3828babfb77ba 100644 --- a/drivers/idle/intel_idle.c +++ b/drivers/idle/intel_idle.c @@ -971,8 +971,7 @@ static int cpu_hotplug_notify(struct notifier_block *n, case CPU_ONLINE: if (lapic_timer_reliable_states != LAPIC_TIMER_ALWAYS_RELIABLE) - smp_call_function_single(hotcpu, __setup_broadcast_timer, - (void *)true, 1); + __setup_broadcast_timer((void *)true); /* * Some systems can hotplug a cpu at runtime after