Document migrateval

Resolves: rhbz2071959

Signed-off-by: Tao Liu <ltao@redhat.com>

irqbalance-1.8.0-Document-migrateval.patch

@@ -0,0 +1,34 @@
+From 917b10268cf5c2a4a6b624b4bb9928e5e3fe2353 Mon Sep 17 00:00:00 2001
+From: Neil Horman <neil.horman@privafy.com>
+Date: Thu, 7 Apr 2022 08:25:42 -0400
+Subject: [PATCH] Document migrateval
+
+---
+ irqbalance.1 | 11 +++++++++++
+ 1 file changed, 11 insertions(+)
+
+diff --git a/irqbalance.1 b/irqbalance.1
+index 215f75a..361faea 100644
+--- a/irqbalance.1
++++ b/irqbalance.1
+@@ -134,6 +134,17 @@ script processing should continue
+ This indicates that an error has occurred in the script, and it should be skipped
+ (further processing to continue)
+ 
++.TP
++.B --migrateval, -e <val>
++Specify a minimum migration ratio to trigger a rebalancing
++Normally any improvement in load distribution will trigger the migration of an
++irq, as long as preforming the migration will not simply move the load to a new
++cpu.  By specifying a migration value, the load balance improvement is subject
++to hysteresis defined by this value, which is inversely propotional to the
++value.  For example, a value of 2 in this option tells irqbalance that the
++improvement in load distribution must be at least 50%, a value of 4 indicates
++the load distribution improvement must be at least 25%, etc
++
+ .TP
+ .B -s, --pid=<file>
+ Have irqbalance write its process id to the specified file.  By default no
+-- 
+2.33.1
+

irqbalance.spec

@@ -27,6 +27,7 @@ Patch1: irqbalance-1.8.0-drop-NoNewPrivs-from-irqbalance-service.patch
 Patch2: irqbalance-1.8.0-Disable-the-communication-socket-when-UI-is-disabled.patch
 Patch3: irqbalance-1.8.0-Drop-CapabilityBoundingSet-from-irqbalance-service.patch
 Patch4: irqbalance-1.8.0-Confine-irqbalance-to-systems-where-it-is-useful.patch
+Patch5: irqbalance-1.8.0-Document-migrateval.patch
 
 %description
 irqbalance is a daemon that evenly distributes IRQ load across
@@ -38,6 +39,7 @@ multiple CPUs for enhanced performance.
 %patch2 -p1
 %patch3 -p1
 %patch4 -p1
+%patch5 -p1
 
 %build
 ./autogen.sh