From 4028e601d1af400c87773a0d784190341a8043cd Mon Sep 17 00:00:00 2001
From: Eduardo Velarde <evelardepola@microsoft.com>
Date: Mon, 20 Jul 2026 19:04:14 -0700
Subject: [PATCH 1/2] test android cpu files

---
 .../SmokeTests/Exceptions/Exceptions.cs       | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/src/tests/nativeaot/SmokeTests/Exceptions/Exceptions.cs b/src/tests/nativeaot/SmokeTests/Exceptions/Exceptions.cs
index 1b3a4e7d52a3d9..7d2db763d9d79b 100644
--- a/src/tests/nativeaot/SmokeTests/Exceptions/Exceptions.cs
+++ b/src/tests/nativeaot/SmokeTests/Exceptions/Exceptions.cs
@@ -26,6 +26,32 @@ public BringUpTest()
 
     public static int Main()
     {
+        Console.WriteLine($"Environment.ProcessorCount = {Environment.ProcessorCount}");
+        Console.WriteLine($"GCSettings.IsServerGC       = {System.Runtime.GCSettings.IsServerGC}");
+        Console.WriteLine($"OperatingSystem.IsAndroid  = {OperatingSystem.IsAndroid()}");
+
+        foreach (string entry in new[] { "possible", "present", "online", "offline" })
+        {
+            string path = $"/sys/devices/system/cpu/{entry}";
+            try
+            {
+                string value = System.IO.File.Exists(path)
+                    ? System.IO.File.ReadAllText(path).Trim()
+                    : "<not present>";
+                Console.WriteLine($"{path} = {value}");
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"{path} = <error: {ex.GetType().Name}: {ex.Message}>");
+            }
+        }
+
+        Console.WriteLine("=====================================================");
+
+        if (OperatingSystem.IsAndroid())
+        {
+            return 42;
+        }
 
         // This test also doubles as server GC test
         if (Environment.ProcessorCount > 1 && !System.Runtime.GCSettings.IsServerGC)

From 8cec4fea586cc4895691d12f073e97ef171e8a71 Mon Sep 17 00:00:00 2001
From: Eduardo Velarde <evelardepola@microsoft.com>
Date: Mon, 20 Jul 2026 19:41:31 -0700
Subject: [PATCH 2/2] not native aot only

---
 .../tests/ThreadPoolTests.cs                  | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/src/libraries/System.Threading.ThreadPool/tests/ThreadPoolTests.cs b/src/libraries/System.Threading.ThreadPool/tests/ThreadPoolTests.cs
index d61ab0f8968c8c..d8321ee45d8dc9 100644
--- a/src/libraries/System.Threading.ThreadPool/tests/ThreadPoolTests.cs
+++ b/src/libraries/System.Threading.ThreadPool/tests/ThreadPoolTests.cs
@@ -608,6 +608,34 @@ public static void RunProcessorCountItemsInParallel()
         public static void ThreadPoolCanPickUpOneOrMoreWorkItemsWhenThreadIsAvailable()
         {
             int processorCount = Environment.ProcessorCount;
+
+            Console.WriteLine($"Environment.ProcessorCount = {Environment.ProcessorCount}");
+            Console.WriteLine($"GCSettings.IsServerGC       = {System.Runtime.GCSettings.IsServerGC}");
+            Console.WriteLine($"OperatingSystem.IsAndroid  = {OperatingSystem.IsAndroid()}");
+
+            foreach (string entry in new[] { "possible", "present", "online", "offline" })
+            {
+                string path = $"/sys/devices/system/cpu/{entry}";
+                try
+                {
+                    string value = System.IO.File.Exists(path)
+                        ? System.IO.File.ReadAllText(path).Trim()
+                        : "<not present>";
+                    Console.WriteLine($"{path} = {value}");
+                }
+                catch (Exception ex)
+                {
+                    Console.WriteLine($"{path} = <error: {ex.GetType().Name}: {ex.Message}>");
+                }
+            }
+
+            Console.WriteLine("=====================================================");
+
+            if (OperatingSystem.IsAndroid())
+            {
+                throw new Exception("Just fail on android");
+            }
+
             AutoResetEvent allBlockingWorkItemsStarted = new AutoResetEvent(false);
             AutoResetEvent allTestWorkItemsStarted = new AutoResetEvent(false);
             ManualResetEvent unblockWorkItems = new ManualResetEvent(false);