init: skip cgroup/task_profiles configuration if cgroups are disabled
We are planning to remove cgroups from the Micrdroid kernel, since the
entire VM belongs exclusively to a single owner, and is in the control
of the cgroups on the host side.
This patch expoxes CgroupAvailable API from libprocessgroup, and changes
init to query the CgroupAvailable API before doing any
cgroups/task_profiles related work.
Bug: 239367015
Test: run MicrodroidDemoApp
Test: atest --test-mapping packages/modules/Virtualization:avf-presubmit
Change-Id: I82787141cd2a7f9309a4e9b24acbd92ca21c145b
diff --git a/init/service_utils.cpp b/init/service_utils.cpp
index d19f5ee..a14969e 100644
--- a/init/service_utils.cpp
+++ b/init/service_utils.cpp
@@ -280,6 +280,15 @@
}
Result<void> WritePidToFiles(std::vector<std::string>* files) {
+ if (files->empty()) {
+ // No files to write pid to, exit early.
+ return {};
+ }
+
+ if (!CgroupsAvailable()) {
+ return Error() << "cgroups are not available";
+ }
+
// See if there were "writepid" instructions to write to files under cpuset path.
std::string cpuset_path;
if (CgroupGetControllerPath("cpuset", &cpuset_path)) {