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libprocessgroup: Proceed if activation of an optional controller fails

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Not all Android kernels support all the cgroup controllers mentioned in
task_profiles.json and/or cgroups.json. Support such kernels by ignoring
certain cgroup activation failures.

Bug: 213617178
Change-Id: I90c0bd959f8a6484c4f2fbc895845e073527271e
Signed-off-by: Bart Van Assche <bvanassche@google.com>
This commit is contained in:
Bart Van Assche 2023-02-07 14:46:15 -08:00
parent 1ec6ec4f57
commit b0947e008a
1 changed files with 6 additions and 1 deletions
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7
libprocessgroup/cgroup_map.cpp
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@ -234,7 +234,12 @@ int CgroupMap::ActivateControllers(const std::string& path) const {
std::string str("+");
str.append(ACgroupController_getName(controller));
if (!WriteStringToFile(str, path + "/cgroup.subtree_control")) {
return -errno;
if (flags & CGROUPRC_CONTROLLER_FLAG_OPTIONAL) {
PLOG(WARNING) << "Activation of cgroup controller " << str
<< " failed in path " << path;
} else {
return -errno;
}
}
}
}