(#1962255) Split off systemd-oomd into a subpackage

Resolves: rhbz#1962255

Signed-off-by: Davide Cavalca <dcavalca@centosproject.org>

split-files.py

@@ -23,7 +23,7 @@ o_devel = open('.file-list-devel', 'w')
 o_container = open('.file-list-container', 'w')
 o_networkd = open('.file-list-networkd', 'w')
 o_resolved = open('.file-list-resolved', 'w')
-o_oomd_defaults = open('.file-list-oomd-defaults', 'w')
+o_oomd = open('.file-list-oomd', 'w')
 o_remote = open('.file-list-remote', 'w')
 o_tests = open('.file-list-tests', 'w')
 o_standalone_tmpfiles = open('.file-list-standalone-tmpfiles', 'w')
@@ -126,8 +126,13 @@ for file in files(buildroot):
                        /modprobe.d
     ''', n, re.X):
         o = o_udev
-    elif re.search(r'10-oomd-.*defaults.conf|lib/systemd/oomd.conf.d', n, re.X):
+    elif re.search(r'''10-oomd-.*defaults\.conf|
-        o = o_oomd_defaults
+                       oomd\.conf|
+                       oomctl|
+                       org.freedesktop.oom1|
+                       systemd-oomd
+    ''', n, re.X):
+        o = o_oomd
     elif n.endswith('.standalone'):
         if 'tmpfiles' in n:
             o = o_standalone_tmpfiles

systemd.spec

@@ -335,14 +335,15 @@ resolution to local applications. It implements a caching and
 validating DNS/DNSSEC stub resolver, as well as an LLMNR and
 MulticastDNS resolver and responder.
 
-%package oomd-defaults
+%package oomd
-Summary:        Configuration files for systemd-oomd
+Summary:        A userspace out-of-memory (OOM) killer
 Requires:       %{name}%{?_isa} = %{version}-%{release}
 License:        LGPLv2+
 
-%description oomd-defaults
+%description oomd
-A set of drop-in files for systemd units to enable action from systemd-oomd,
+systemd-oomd is a system service that uses cgroups-v2 and pressure stall
-a userspace out-of-memory (OOM) killer.
+information (PSI) to monitor and take action on processes before an OOM
+occurs in kernel space.
 
 %package standalone-tmpfiles
 Summary:       Standalone tmpfiles binary for use in non-systemd systems
@@ -631,20 +632,6 @@ getent passwd systemd-oom &>/dev/null || useradd -r -l -g systemd-oom -d / -s /s
 %post
 systemd-machine-id-setup &>/dev/null || :
 
-# FIXME: move to %postun. We want to restart systemd *after* removing
-# files from the old rpm. Right now we may still have bits the old
-# setup if the files are not present in the new version. But before
-# implement restarting of *other* services after the transaction, moving
-# this would make things worse, increasing the number of warnings we get
-# about needed daemon-reload.
-
-oomd_state=$(systemctl is-active systemd-oomd 2>/dev/null || :)
-
-# Work-around for #1931034. Remove after F34 is released.
-if [ "$oomd_state" == "active" ]; then
-   systemctl stop -q systemd-oomd 2>/dev/null || :
-fi
-
 systemctl daemon-reexec &>/dev/null || {
   # systemd v239 had bug #9553 in D-Bus authentication of the private socket,
   # which was later fixed in v240 by #9625.
@@ -665,10 +652,6 @@ systemctl daemon-reexec &>/dev/null || {
   fi
 }
 
-if [ "$oomd_state" == "active" ]; then
-   systemctl start -q systemd-oomd 2>/dev/null || :
-fi
-
 if [ $1 -eq 1 ]; then
    # create /var/log/journal only on initial installation,
    # and only if it's writable (it won't be in rpm-ostree).
@@ -706,12 +689,6 @@ fi
 
 %systemd_postun_with_restart systemd-timedated.service systemd-hostnamed.service systemd-journald.service systemd-localed.service systemd-oomd.service
 
-%triggerpostun -- systemd < 247.3-2
-# This is for upgrades from previous versions before oomd-defaults is available.
-# We use %%triggerpostun here because rpm doesn't allow a second %%triggerun with
-# a different package version.
-systemctl --no-reload preset systemd-oomd.service &>/dev/null || :
-
 %post libs
 %{?ldconfig}
 
@@ -857,7 +834,7 @@ getent passwd systemd-resolve &>/dev/null || useradd -r -u 193 -l -g systemd-res
 
 %files resolved -f .file-list-resolved
 
-%files oomd-defaults -f .file-list-oomd-defaults
+%files oomd -f .file-list-oomd
 
 %files standalone-tmpfiles -f .file-list-standalone-tmpfiles