+++ /dev/null
-From 0e264e7ac2b311aa9b42b183660a07b7e4e36b11 Mon Sep 17 00:00:00 2001
-From: Jim Gauld <james.gauld@windriver.com>
-Date: Fri, 9 Jun 2017 14:58:23 -0400
-Subject: [PATCH 1/1] CGTS-7164: Add resource options cpu-mask to affine drbd
- kernel threads
-
-This adds "options { cpu-mask <cpumask>; }" section to DRBD resource
-configuration if 'cpumask' hexstring is defined. This governs kernel
-threads: drbd_w_<x>, drbd_r_<x>, drbd_a_<x>.
-
-Related notes:
-- if cpumask is not specified, the kernel threads drbd_w_<x>, drbd_r_<x>,
- drbd_a_<x>, and drbd_as_<x> are affined to individual cores, each <x>
- on a different core.
-
-- the remainder of the kernel threads are governed by kernel boot
- argument kthread_cpus=<cpulist>. i.e., drbd-reissue, drbd<x>_submit,
- jbd2/drbd<x>-8, drbd_as_<x>.
-
-- the drbd_a_<x> and drbd_as_<x> show up when DRBD is duplex.
-
-- the drbd_a_<x> threads have SCHED_RR scheduling policy.
----
- manifests/resource.pp | 3 +++
- templates/header.res.erb | 6 ++++++
- 2 files changed, 9 insertions(+)
-
-diff --git a/manifests/resource.pp b/manifests/resource.pp
-index d19ad8b..17e6142 100644
---- a/manifests/resource.pp
-+++ b/manifests/resource.pp
-@@ -26,6 +26,8 @@
- # [link_speed] replication link network speed mbps
- # [num_parallel] number of parallel drbd filesystems to sync
- # [rtt_ms] round-trip-time milliseconds (i.e., ping between replication nodes)
-+# [cpumask] cpu-affinity-mask for DRBD kernel threads (hexidecimal notation).
-+# 0 means spread over all CPUs of the machine.
- define drbd::resource (
- $host1 = undef,
- $host2 = undef,
-@@ -48,6 +50,7 @@ define drbd::resource (
- $num_parallel = false,
- $rtt_ms = false,
- $resync_after = undef,
-+ $cpumask = false,
- $net_parameters = false,
- $manage = true,
- $ha_primary = false,
-diff --git a/templates/header.res.erb b/templates/header.res.erb
-index be53761..df52544 100644
---- a/templates/header.res.erb
-+++ b/templates/header.res.erb
-@@ -29,6 +29,12 @@ resource <%= @name %> {
- <% end -%>
- }
-
-+<% if @cpumask -%>
-+ options {
-+ cpu-mask <%= @cpumask %>;
-+ }
-+<% end -%>
-+
- net {
- after-sb-0pri discard-zero-changes;
- after-sb-1pri discard-secondary;
---
-1.8.3.1
-