[GIT PULL] x86/irq change for v4.3

[GIT PULL] x86/irq change for v4.3

[Ingo Molnar]

Linus,

Please pull the latest x86-irq-for-linus git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-irq-for-linus

   # HEAD: 9d87cd61a6b71ee00b7576a3ebc10208becdbea1 x86/irq: Hide 'HYP:' line in /proc/interrupts when not on Xen/Hyper-V

A single change that hides the 'HYP:' line in /proc/interrupts when it's unused.

 Thanks,

	Ingo

------------------>
Vitaly Kuznetsov (1):
      x86/irq: Hide 'HYP:' line in /proc/interrupts when not on Xen/Hyper-V


 arch/x86/kernel/irq.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 88b366487b0e..5b537479de83 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -139,10 +139,13 @@ int arch_show_interrupts(struct seq_file *p, int prec)
 	seq_puts(p, "  Machine check polls\n");
 #endif
 #if IS_ENABLED(CONFIG_HYPERV) || defined(CONFIG_XEN)
-	seq_printf(p, "%*s: ", prec, "HYP");
-	for_each_online_cpu(j)
-		seq_printf(p, "%10u ", irq_stats(j)->irq_hv_callback_count);
-	seq_puts(p, "  Hypervisor callback interrupts\n");
+	if (test_bit(HYPERVISOR_CALLBACK_VECTOR, used_vectors)) {
+		seq_printf(p, "%*s: ", prec, "HYP");
+		for_each_online_cpu(j)
+			seq_printf(p, "%10u ",
+				   irq_stats(j)->irq_hv_callback_count);
+		seq_puts(p, "  Hypervisor callback interrupts\n");
+	}
 #endif
 	seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count));
 #if defined(CONFIG_X86_IO_APIC)