From 3d53a5b19187e5c75e2185840ca7b030d0d79ee5 Mon Sep 17 00:00:00 2001
From: Dirk Mueller <dmueller@suse.com>
Date: Dec 14 2021 14:04:46 +0000
Subject: rpm/kernel-obs-build.spec.in: move to zstd for the initrd


Newer distros have capability to decompress zstd, which
provides a 2-5% better compression ratio at very similar
cpu overhead. Plus this tests the zstd codepaths now as well.

---

diff --git a/rpm/kernel-obs-build.spec.in b/rpm/kernel-obs-build.spec.in
index 71bc0c8..de359e6 100644
--- a/rpm/kernel-obs-build.spec.in
+++ b/rpm/kernel-obs-build.spec.in
@@ -70,6 +70,9 @@ Release:        <RELEASE>.g@COMMIT@
 %else
 Release:        @RELEASE@
 %endif
+%if 0%{?suse_version} > 1550 || 0%{?sle_version} > 150200
+BuildRequires:  zstd
+%endif
 
 %description
 This package is repackaging already compiled kernels to make them usable
@@ -151,6 +154,9 @@ ROOT=""
 dracut --reproducible --host-only --no-hostonly-cmdline \
 	--no-early-microcode --nofscks --strip --hardlink \
 	--drivers="$KERNEL_MODULES" --force /tmp/initrd.kvm \
+%if 0%{?suse_version} > 1550 || 0%{?sle_version} > 150200
+	--compress "zstd -19 -T0" \
+%endif
 	`echo /boot/%{kernel_name}-*%{kernel_flavor} | sed -n -e 's,[^-]*-\(.*'%{kernel_flavor}'\),\1,p'`
 %endif