Reduce the PPC initrd size

live/root/tmp/driver_cleanup.rb

@@ -58,17 +58,57 @@ def self.from_file(file)
   end
 end
 
+# Remove lines for other architectures than the current machine architecture. The arch specific
+# lines start with the <$arch> line and end with the </$arch> line.
+def arch_filter(lines)
+  # the current state for a finite-state machine with two states (inside or outside an arch tag)
+  skipping = false
+  # the current machine architecture
+  arch = `arch`.strip
+  # the architecture from the tag line
+  arch_tag = nil
+
+  lines.reject! do |line|
+    # opening arch tag
+    if line.match(/^\s*<\s*(\w+)\s*>\s*$/)
+      arch_tag = Regexp.last_match[1]
+      skipping = arch_tag != arch
+      # always remove the arch tag
+      next true
+    end
+
+    # closing arch tag, for simplicity let's assume it matches the previous opening tag, the tags
+    # cannot be nested and the input file is under our control and so we can be sure it is valid
+    if line.match(/^\s*<\/\s*\w+\s*>\s*$/)
+      skipping = false
+      # always remove the arch tag
+      next true
+    end
+
+    if skipping
+      puts "Ignoring #{arch_tag} specific line: #{line}"
+    end
+
+    skipping
+  end
+end
+
 # really delete or just do a smoke test?
 do_delete = ARGV[0] == "--delete"
 debug = ENV["DEBUG"] == "1"
 
 # read the configuration files
+# this file is a copy from https://github.com/openSUSE/installation-images/blob/master/etc/module.list
 config = File.read(File.join(__dir__, "module.list")).split("\n")
+# here are Agama specific overrides
 config += File.read(File.join(__dir__, "module.list.extra")).split("\n")
 
 # remove comments and empty lines
 config.reject!{|l| l.empty? || l.start_with?("#")}
 
+# process the architecture specific lines
+arch_filter(config)
+
 # split the list into keep and delete parts (starting with "-")
 delete, keep = config.partition{|c| c.start_with?("-")}
 

live/root/tmp/module.list

@@ -3,6 +3,10 @@
 # Lines starting with '-' specify modules to drop.
 # The lines below are actually perl regexps, so be careful.
 #
+# If a module is specified both to be added and dropped, it is dropped.
+#
+# Arch-dependend blocks start with <ARCH> and end with </ARCH> (on separate lines).
+#
 kernel/drivers/base/
 kernel/drivers/block/
 -kernel/drivers/block/paride
@@ -311,3 +315,14 @@ updates/
 -updates/net/sunrpc/
 -updates/fs/lockd/
 -updates/fs/nfs*
+
+<ppc64le>
+# for the source of this module list, see bsc#1213879 comment 35
+-kernel/drivers/net/wireless/
+-kernel/net/ieee80211/
+-kernel/net/mac80211/
+-kernel/net/wireless/
+-kernel/net/wimax/
+-kernel/drivers/gpu/
+-kernel/drivers/video/
+</ppc64le>

live/src/agama-installer.changes

@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Mon Feb 24 16:19:03 UTC 2025 - Ladislav Slezák <lslezak@suse.com>
+
+- Reduce the PPC initrd size (gh#agama-project/agama#2026),
+  use the same solution from installation-images
+  (gh#openSUSE/installation-images#754)
+
 -------------------------------------------------------------------
 Mon Feb 24 13:35:04 UTC 2025 - Ladislav Slezák <lslezak@suse.com>
 

live/src/config.sh

@@ -208,8 +208,8 @@ du -h -s /lib/modules /lib/firmware
 # remove the multimedia drivers
 # set DEBUG=1 to print the deleted drivers
 /tmp/driver_cleanup.rb --delete
-# remove the script, not needed anymore
-rm /tmp/driver_cleanup.rb
+# remove the script and data, not needed anymore
+rm /tmp/driver_cleanup.rb /tmp/module.list*
 
 # remove the unused firmware (not referenced by kernel drivers)
 /tmp/fw_cleanup.rb --delete