diff --git a/src/hotspot/os/linux/cgroupSubsystem_linux.cpp b/src/hotspot/os/linux/cgroupSubsystem_linux.cpp index 4a8fda432d8..bb51d4f3b8e 100644 --- a/src/hotspot/os/linux/cgroupSubsystem_linux.cpp +++ b/src/hotspot/os/linux/cgroupSubsystem_linux.cpp @@ -37,7 +37,7 @@ #include "utilities/globalDefinitions.hpp" // controller names have to match the *_IDX indices -static const char* cg_controller_name[] = { "cpu", "cpuset", "cpuacct", "memory", "pids" }; +static const char* cg_controller_name[] = { "cpuset", "cpu", "cpuacct", "memory", "pids" }; CgroupSubsystem* CgroupSubsystemFactory::create() { CgroupV1MemoryController* memory = nullptr; @@ -226,9 +226,10 @@ bool CgroupSubsystemFactory::determine_type(CgroupInfo* cg_infos, char buf[MAXPATHLEN+1]; char *p; bool is_cgroupsV2; - // true iff all required controllers, memory, cpu, cpuset, cpuacct are enabled + // true iff all required controllers, memory, cpu, cpuacct are enabled // at the kernel level. // pids might not be enabled on older Linux distros (SLES 12.1, RHEL 7.1) + // cpuset might not be enabled on newer Linux distros (Fedora 41) bool all_required_controllers_enabled; /* @@ -260,6 +261,7 @@ bool CgroupSubsystemFactory::determine_type(CgroupInfo* cg_infos, cg_infos[MEMORY_IDX]._hierarchy_id = hierarchy_id; cg_infos[MEMORY_IDX]._enabled = (enabled == 1); } else if (strcmp(name, "cpuset") == 0) { + log_debug(os, container)("Detected optional cpuset controller entry in %s", proc_cgroups); cg_infos[CPUSET_IDX]._name = os::strdup(name); cg_infos[CPUSET_IDX]._hierarchy_id = hierarchy_id; cg_infos[CPUSET_IDX]._enabled = (enabled == 1); @@ -283,8 +285,8 @@ bool CgroupSubsystemFactory::determine_type(CgroupInfo* cg_infos, is_cgroupsV2 = true; all_required_controllers_enabled = true; for (int i = 0; i < CG_INFO_LENGTH; i++) { - // pids controller is optional. All other controllers are required - if (i != PIDS_IDX) { + // pids and cpuset controllers are optional. All other controllers are required + if (i != PIDS_IDX && i != CPUSET_IDX) { is_cgroupsV2 = is_cgroupsV2 && cg_infos[i]._hierarchy_id == 0; all_required_controllers_enabled = all_required_controllers_enabled && cg_infos[i]._enabled; }