From e9cd914faee8d3b77c41c263d49f741ba80be62a Mon Sep 17 00:00:00 2001
From: CentOS Sources <bugs@centos.org>
Date: Apr 10 2018 05:51:00 +0000
Subject: import irqbalance-1.0.7-11.el7


---

diff --git a/SOURCES/irqbalance-1.0.8-Balance-correctly-IRQs-reappearing.patch b/SOURCES/irqbalance-1.0.8-Balance-correctly-IRQs-reappearing.patch
new file mode 100644
index 0000000..6707a88
--- /dev/null
+++ b/SOURCES/irqbalance-1.0.8-Balance-correctly-IRQs-reappearing.patch
@@ -0,0 +1,37 @@
+From 93ed80181e0ce7b81bc88a67fabad1ad829fc460 Mon Sep 17 00:00:00 2001
+From: Frediano Ziglio <frediano.ziglio@citrix.com>
+Date: Wed, 2 Jul 2014 12:59:34 +0100
+Subject: [PATCH 1/1] Balance correctly IRQs reappearing
+
+If IRQ disappears and reappears later (this happens frequently for Xen)
+the IRQ is not balanced correctly due to overflow in irq_count (as the
+counter got smaller and difference cause overflow).
+Rescan if this happens fix the problem.
+
+Signed-off-by: Frediano Ziglio <frediano.ziglio@citrix.com>
+---
+ procinterrupts.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/procinterrupts.c b/procinterrupts.c
+index 6a6bdaa..3476473 100644
+--- a/procinterrupts.c
++++ b/procinterrupts.c
+@@ -181,6 +181,14 @@ void parse_proc_interrupts(void)
+ 			break;
+ 		}
+ 
++		/* IRQ removed and reinserted, need restart or this will
++		 * cause an overflow and IRQ won't be rebalanced again
++		 */
++		if (count < info->irq_count) {
++			need_rescan = 1;
++			break;
++		}
++
+ 		info->last_irq_count = info->irq_count;		
+ 		info->irq_count = count;
+ 
+-- 
+2.16.1
+
diff --git a/SPECS/irqbalance.spec b/SPECS/irqbalance.spec
index 9d4e948..4cda551 100644
--- a/SPECS/irqbalance.spec
+++ b/SPECS/irqbalance.spec
@@ -1,6 +1,6 @@
 Name:           irqbalance
 Version:        1.0.7
-Release:        10%{?dist}
+Release:        11%{?dist}
 Epoch:          3
 Summary:        IRQ balancing daemon
 
@@ -43,6 +43,7 @@ Patch14:irqbalance-1.0.8-parse-isolcpus-and-nohz-cpus-from-sysfs.patch
 Patch15:irqbalance-1.0.8-Invalid-parsing-for-isolated-and-nohz_full-cpu-masks.patch
 Patch16:irqbalance-1.0.9-irqbalance-set-IRQBALANCE_DEBUG-variable-implies-for.patch
 Patch17:irqbalance-node-package.patch
+Patch18:irqbalance-1.0.8-Balance-correctly-IRQs-reappearing.patch
 
 %description
 irqbalance is a daemon that evenly distributes IRQ load across
@@ -67,6 +68,7 @@ multiple CPUs for enhanced performance.
 %patch15 -p1
 %patch16 -p1
 %patch17 -p1
+%patch18 -p1
 
 %build
 ./autogen.sh
@@ -105,6 +107,10 @@ fi
 /sbin/chkconfig --del irqbalance >/dev/null 2>&1 || :
 
 %changelog
+* Mon Feb 05 2018 Petr Oros <poros@redhat.com> - 3:1.0.7-11
+- Balance correctly IRQs reappearing
+- Resolves: #1536373
+
 * Tue May 16 2017 Petr Oros <poros@redhat.com> - 3:1.0.7-10
 - irqbalance node package patch
 - Resolves: #1444195