tuna.spec: Add fix to print warning if setaffinity causes EBUSY

Add upstream patch to print warning if setaffinity caues EBUSY

Resolves: rhbz#2016540
Signed-off-by: John Kacur <jkacur@redhat.com>

tuna-Print-warning-if-setting-affinity-results-in-EBUSY.patch

@@ -0,0 +1,40 @@
+From 1dd72d9db74b063c8dd96f13701a14e299abc325 Mon Sep 17 00:00:00 2001
+From: John Kacur <jkacur@redhat.com>
+Date: Thu, 28 Oct 2021 00:50:12 -0400
+Subject: [PATCH 1/2] tuna: Print warning if setting affinity results in EBUSY
+ and continue
+
+When trying to isolate a CPU, if a device uses SCHED_DEADLINE and admission
+control is enabled, setting the affinity will result in the error EBUSY.
+
+tuna should print a warning that this pid could not be moved, and
+continue.
+
+The user can either ignore the warning or use other measures to isolate
+the cpu such as booting with isolcpus or turning off admission control
+and rerunning the tuna isolate command and then turning admission
+control back on.
+
+Signed-off-by: John Kacur <jkacur@redhat.com>
+---
+ tuna/tuna.py | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/tuna/tuna.py b/tuna/tuna.py
+index 591206d9b4e1..f25eb3d10923 100755
+--- a/tuna/tuna.py
++++ b/tuna/tuna.py
+@@ -360,6 +360,10 @@ def isolate_cpus(cpus, nr_cpus):
+                 if err.args[0] == errno.EINVAL:
+                     print("Function:", fname, ",", err.strerror, file=sys.stderr)
+                     sys.exit(2)
++                if err.args[0] == errno.EBUSY:
++                    comm = ps[pid].stat["comm"]
++                    print(f'Warning: Unable to isolate pid {pid} [{comm}]')
++                    continue
+                 raise err
+ 
+         if "threads" not in ps[pid]:
+-- 
+2.31.1
+

tuna.spec

@@ -1,6 +1,6 @@
 Name: tuna
 Version: 0.16
-Release: 2%{?dist}
+Release: 3%{?dist}
 License: GPLv2
 Summary: Application tuning GUI & command line utility
 URL: https://git.kernel.org/pub/scm/utils/tuna/tuna.git
@@ -14,6 +14,7 @@ Requires: python3-linux-procfs >= 0.6
 # Requires: python-inet_diag
 
 # Patches
+Patch1: tuna-Print-warning-if-setting-affinity-results-in-EBUSY.patch 
 
 %description
 Provides interface for changing scheduler and IRQ tunables, at whole CPU and at
@@ -26,6 +27,7 @@ installed.
 
 %prep
 %setup -q
+%patch1 -p1
 
 %build
 %py3_build
@@ -67,6 +69,10 @@ done
 %{_datadir}/polkit-1/actions/org.tuna.policy
 
 %changelog
+* Thu Oct 28 2021 John Kacur <jkacur@redhat.com> - 0.16-3
+- Print warning if setaffinity causes EBUSY and continue
+Resolves: rhbz#2016540
+
 * Tue Aug 10 2021 Mohan Boddu <mboddu@redhat.com> - 0.16-2
 - Rebuilt for IMA sigs, glibc 2.34, aarch64 flags
   Related: rhbz#1991688