[tip:x86/apic] x86/apic: Remove local var in flat_send_IPI_allbutself()

[tip-bot for Borislav Petkov]

Commit-ID:  03dd604e1d515ca1ab02aaae12162e0a077858e9
Gitweb:     https://git.kernel.org/tip/03dd604e1d515ca1ab02aaae12162e0a077858e9
Author:     Borislav Petkov <bp@xxxxxxx>
AuthorDate: Mon, 11 Dec 2017 12:54:44 +0100
Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Mon, 11 Dec 2017 14:47:16 +0100

x86/apic: Remove local var in flat_send_IPI_allbutself()

No code changed:

  # arch/x86/kernel/apic/apic_flat_64.o:

   text    data     bss     dec     hex filename
   1838     624       0    2462     99e apic_flat_64.o.before
   1838     624       0    2462     99e apic_flat_64.o.after

md5:
   aa2ae687d94bc4534f86ae6865dabd6a  apic_flat_64.o.before.asm
   42148da76ba8f9a236c33f8803bd2a6b  apic_flat_64.o.after.asm

md5 sum is different due to asm output offsets changing.

Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/20171211115444.26577-1-bp@xxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 arch/x86/kernel/apic/apic_flat_64.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c
index aa85690..f58a497 100644
--- a/arch/x86/kernel/apic/apic_flat_64.c
+++ b/arch/x86/kernel/apic/apic_flat_64.c
@@ -84,12 +84,8 @@ flat_send_IPI_mask_allbutself(const struct cpumask *cpumask, int vector)
 static void flat_send_IPI_allbutself(int vector)
 {
 	int cpu = smp_processor_id();
-#ifdef	CONFIG_HOTPLUG_CPU
-	int hotplug = 1;
-#else
-	int hotplug = 0;
-#endif
-	if (hotplug || vector == NMI_VECTOR) {
+
+	if (IS_ENABLED(CONFIG_HOTPLUG_CPU) || vector == NMI_VECTOR) {
 		if (!cpumask_equal(cpu_online_mask, cpumask_of(cpu))) {
 			unsigned long mask = cpumask_bits(cpu_online_mask)[0];