tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index 0cb8649f23eea05b2aed352551d059f8eaa5ab2b..e01f260c94255bc11ea06824b55ecf1312116b6a 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -247,6 +247,22 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   </summary>
 </histogram>
 
+<histogram name="Android.KernelVersion" enum="AndroidKernelVersion">
+  <owner>rsesek@chromium.org</owner>
+  <summary>
+    Reports the kernel major and minor version from the utsname.release field.
+    The low 16 bits of each version are combined into 32-bit integer. The range
+    is from [0x0002006,0x00030050] to track kernel versions 2.6 through 3.50.
+  </summary>
+</histogram>
+
+<histogram name="Android.SeccompStatus" enum="AndroidSeccompStatus">
+  <owner>rsesek@chromium.org</owner>
+  <summary>
+    Reports the level of kernel support for the seccomp-bpf sandbox.
+  </summary>
+</histogram>
+
 <histogram name="AndroidTabCloseUndo.Toast"
     enum="AndroidTabCloseUndoToastEvent">
   <owner>dtrainor@chromium.org</owner>
@@ -44148,6 +44164,19 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <int value="4" label="EvictAll"/>
 </enum>
 
+<enum name="AndroidKernelVersion" type="int">
+  <int value="131078" label="2.6"/>
+  <int value="196608" label="3.0"/>
+  <int value="196611" label="3.3"/>
+  <int value="196612" label="3.4"/>
+  <int value="196616" label="3.8"/>
+  <int value="196624" label="3.10"/>
+  <int value="196628" label="3.14"/>
+  <int value="196631" label="3.17"/>
+  <int value="196632" label="3.18"/>
+  <int value="196688" label="3.50"/>

[jln (very slow on Chromium), 2015/03/18 20:49:15]

3.20 is actually called 4.0

[Robert Sesek, 2015/03/18 21:41:36]

Done.

+</enum>
+
 <enum name="AndroidMemoryNotificationBackground" type="int">
   <int value="0" label="TrimMemoryUiHidden"/>
   <int value="1" label="TrimMemoryBackground"/>
@@ -44162,6 +44191,14 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <int value="3" label="LowMemory"/>
 </enum>
 
+<enum name="AndroidSeccompStatus" type="int">
+  <int value="0" label="Detection Failed"/>
+  <int value="1" label="Not Supported"/>
+  <int value="2" label="Prctl Only Supported"/>
+  <int value="3" label="Syscall Only Supported"/>

[jln (very slow on Chromium), 2015/03/18 20:49:15]

That shouldn't be possible. Will be interesting to see if we see that in the
field.
We've seen KernelSupportsSeccompTsync() crash on buggy kernels.

[Robert Sesek, 2015/03/18 21:41:36]

Right, hopefully nothing comes back with 3 ;-). Since we're doing the probing in
a utility process, we should be protected against buggy kernels in the browser.

+  <int value="4" label="Prctl + Syscall Supported"/>
+</enum>
+
 <enum name="AndroidSigninPromoAction" type="int">
   <int value="0" label="Promo enabled">
     The Android signin promo was enabled to show on next startup.