From d488c0b3b784dccf543ab8b4de0ad97d78113557 Mon Sep 17 00:00:00 2001
From: Rodrigo Arias Mallo <rodrigo.arias@bsc.es>
Date: Tue, 9 Jul 2024 17:06:50 +0200
Subject: [PATCH] Always run memtool at the start

---
 JOURNAL.md     | 2 ++
 lagarto-ox.nix | 5 +++++
 2 files changed, 7 insertions(+)

diff --git a/JOURNAL.md b/JOURNAL.md
index c5653f5..4733b14 100644
--- a/JOURNAL.md
+++ b/JOURNAL.md
@@ -1038,3 +1038,5 @@ Let's see if we can reproduce it again in the same position.
     iter 26, nblocks 21, nbytes 50.2M (A)
     iter 27, nblocks 22, nbytes 53.8M (A)
 
+Let's make it automatic, so we only need to boot and confirm that it
+hangs. Just in case we can make it not hang by a miracle.
diff --git a/lagarto-ox.nix b/lagarto-ox.nix
index 4b3be5d..175649a 100644
--- a/lagarto-ox.nix
+++ b/lagarto-ox.nix
@@ -96,6 +96,11 @@
         sh -c 'hb=0; while [ 1 ]; do let hb=$hb+1; devmem 0x1bfff0000 32 $hb; done' &
       ''
       +
+      # Run our memtool to hang the kernel here.
+      ''
+        memtool
+      ''
+      +
       # Disable proactive compaction. May be better to disable CONFIG_COMPACTION.
       ''
         echo 0 > /proc/sys/vm/compaction_proactiveness