From 17b55587df144ef13bcca6be72163d97b3be4eec Mon Sep 17 00:00:00 2001
From: Ralf Schmelter <ralf.schmelter@sap.com>
Date: Fri, 24 Nov 2023 13:20:58 +0100
Subject: [PATCH 1/2] SapMachine #1540: Fix incorrect handling of invalid
 values in vitals extremas

---
 src/hotspot/os/linux/vitals_linux_oswrapper.cpp | 4 ++--
 src/hotspot/share/vitals/vitals.cpp             | 2 ++
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/hotspot/os/linux/vitals_linux_oswrapper.cpp b/src/hotspot/os/linux/vitals_linux_oswrapper.cpp
index cb331c30700..edff0ec368f 100644
--- a/src/hotspot/os/linux/vitals_linux_oswrapper.cpp
+++ b/src/hotspot/os/linux/vitals_linux_oswrapper.cpp
@@ -84,8 +84,8 @@ class ProcFile {
       return false;
     }
 
-    size_t bytes_read = ::fread(_buf, 1, bufsize, f);
-    _buf[bufsize - 1] = '\0';
+    size_t bytes_read = ::fread(_buf, 1, bufsize - 1, f);
+    _buf[bytes_read] = '\0';
 
     ::fclose(f);
 
diff --git a/src/hotspot/share/vitals/vitals.cpp b/src/hotspot/share/vitals/vitals.cpp
index 7dd83e0a660..3860e0929c8 100644
--- a/src/hotspot/share/vitals/vitals.cpp
+++ b/src/hotspot/share/vitals/vitals.cpp
@@ -875,6 +875,8 @@ class SampleTables: public CHeapObj<mtInternal> {
 
             bool should_log = (column->extremum() == MAX) && (sample->value(idx) > extremum_sample->value(idx));
             should_log |= (column->extremum() == MIN) && (sample->value(idx) < extremum_sample->value(idx));
+            should_log &= sample->value(idx) != INVALID_VALUE;
+            should_log |= extremum_sample->value(idx) == INVALID_VALUE;
 
             if (should_log) {
               Sample* last_extremum_sample = _last_extremum_samples.sample_at(idx);

From d856242e1c75380872239d3942e9ecd1493d4327 Mon Sep 17 00:00:00 2001
From: Johannes Bechberger <johannes.bechberger@sap.com>
Date: Fri, 24 Nov 2023 14:04:03 +0100
Subject: [PATCH 2/2] SapMachine #1544: Run wiki update task regularly

---
 .github/actions/update-wiki/action.yml | 24 ++++++++++++++++++++++++
 .github/workflows/wiki.yml             | 18 ++++++++++++++++++
 2 files changed, 42 insertions(+)
 create mode 100644 .github/actions/update-wiki/action.yml
 create mode 100644 .github/workflows/wiki.yml

diff --git a/.github/actions/update-wiki/action.yml b/.github/actions/update-wiki/action.yml
new file mode 100644
index 00000000000..3ed23d5f6ee
--- /dev/null
+++ b/.github/actions/update-wiki/action.yml
@@ -0,0 +1,24 @@
+name: Update Wiki
+
+description: |
+  This action updates the wiki with the latest blog posts.
+
+runs:
+  using: composite
+  steps:
+    - name: Update Wiki
+      run: |
+          git clone https://github.com/SAP/SapMachine.wiki.git
+          cd SapMachine.wiki
+          pip3 install feedparser
+          python3 scripts/update_blogs.py update > ../out
+          cat ../out
+          if grep -q changed ../out; then
+              git commit -a -m "Update blog posts"
+              git push
+              echo "Blog post list updated"
+          else
+              echo "No updates"
+          fi
+      working-directory: .
+      shell: bash
diff --git a/.github/workflows/wiki.yml b/.github/workflows/wiki.yml
new file mode 100644
index 00000000000..0d5a5b76c3b
--- /dev/null
+++ b/.github/workflows/wiki.yml
@@ -0,0 +1,18 @@
+# Runs update-wiki update actions every day at 20:00 UTC
+
+name: 'Wiki Update'
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 20 * * *'
+
+jobs:
+  wiki:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 'Checkout the JDK source'
+        uses: actions/checkout@v4
+      - name: 'Update Wiki'
+        uses: ./.github/actions/update-wiki
+