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Add tests for controller functionality of cgroup

This commit is contained in:
Chen Chengjun 2025-12-03 02:27:55 +00:00 committed by Ruihan Li
parent d58ae3a782
commit 6a87dad817
1 changed files with 52 additions and 18 deletions
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70
test/src/apps/scripts/cgroup.sh
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@ -19,7 +19,7 @@ verify() {
log_step "Verify: $description"
echo "Run: $command"
local result=$(eval "$command")
local result=$(eval "$command" 2>&1)
echo "Got: $result"
echo "Expected: $expected"
@ -53,6 +53,9 @@ log_step "1. Change to cgroup root directory"
cd "$CGROUP_ROOT"
echo "Current directory: $(pwd)"
log_step "1a. Check initial controller attributes"
verify "cpuset.cpus.effective exists in root" "ls cpuset.cpus.effective" "cpuset.cpus.effective"
log_step "2. Create user hierarchy"
mkdir -p "$CGROUP_NAME"
verify "user hierarchy exists" "ls -d $CGROUP_NAME" "$CGROUP_NAME"
@ -61,37 +64,68 @@ log_step "3. Enter user directory"
cd "$CGROUP_NAME"
echo "Current directory: $(pwd)"
log_step "3a. Check initial memory.max in child"
verify "memory.max doesn't exist initially" "ls memory.max" "ls: memory.max: No such file or directory"
log_step "4. Check initial cgroup of process 1"
verify "Process 1 initially in root cgroup" "grep -a '0::' /proc/$PROCESS_ID/cgroup" "0::/"
log_step "4a. Check initial populated status"
verify "Initial cgroup.events populated=0" "grep '^populated' cgroup.events" "populated 0"
log_step "5. Bind process 1 to user hierarchy"
log_step "5. Enable memory and pids in root"
cd ..
echo "+memory +pids" > cgroup.subtree_control
verify "root subtree_control has memory and pids" "cat cgroup.subtree_control" "memory pids"
log_step "5a. Check child now has memory.max and pids.max"
cd "$CGROUP_NAME"
echo "Current directory: $(pwd)"
echo "Current directory list: $(ls)"
verify "memory.max now exists" "ls memory.max" "memory.max"
verify "pids.max now exists" "ls pids.max" "pids.max"
log_step "5b. Check child cgroup.controllers"
verify "child controllers are memory and pids" "cat cgroup.controllers" "memory pids"
log_step "6. Disable memory in root"
cd ..
echo "-memory" > cgroup.subtree_control
verify "root subtree_control removed memory" "cat cgroup.subtree_control" "pids"
log_step "6a. Check child lost memory.max"
cd "$CGROUP_NAME"
verify "memory.max removed after disabling" "ls memory.max" "ls: memory.max: No such file or directory"
log_step "7. Bind process 1 to user hierarchy"
echo $PROCESS_ID > cgroup.procs
verify "Process 1 added to user hierarchy" "cat cgroup.procs | grep -w $PROCESS_ID" "$PROCESS_ID"
log_step "5a. Check populated status after binding"
verify "cgroup.events populated=1 after binding" "grep '^populated' cgroup.events" "populated 1"
log_step "7a. Try enabling pids in child (should fail with EBUSY)"
verify "Cannot enable pids with process attached" "echo +pids > cgroup.subtree_control" "sh: write error: Device or resource busy"
log_step "6. Check process 1 cgroup again"
verify "Process 1 now in user hierarchy" "grep -a '0::' /proc/$PROCESS_ID/cgroup" "0::/$CGROUP_NAME"
log_step "7. Return to parent directory"
log_step "8. Remove process 1 from child"
cd ..
echo "Current directory: $(pwd)"
log_step "8. Check parent cgroup.procs contents"
echo "cgroup.procs contents:"
cat cgroup.procs
verify "cgroup.procs now does not contain process 1" "cat cgroup.procs | grep -w $PROCESS_ID" ""
log_step "9. Move process 1 back to root cgroup"
echo $PROCESS_ID > cgroup.procs
verify "Process 1 back in root cgroup" "grep -a '0::' /proc/$PROCESS_ID/cgroup" "0::/"
log_step "10. Remove user hierarchy"
log_step "8a. Now enable pids in child (should succeed)"
cd "$CGROUP_NAME"
echo "+pids" > cgroup.subtree_control
verify "pids enabled successfully" "cat cgroup.subtree_control" "pids"
log_step "8b. Verify subtree_control is pids"
verify "subtree_control is pids" "cat cgroup.subtree_control" "pids"
log_step "9. Try binding process 1 again (should fail)"
verify "Cannot bind process when pids enabled" "echo $PROCESS_ID > cgroup.procs" "sh: write error: Device or resource busy"
log_step "10. Return to parent directory"
cd ..
echo "Current directory: $(pwd)"
log_step "11. Remove user hierarchy"
rmdir "$CGROUP_NAME"
verify "user hierarchy removed" "ls -d $CGROUP_NAME 2>&1" "ls: $CGROUP_NAME: No such file or directory"
verify "user hierarchy removed" "ls -d $CGROUP_NAME" "ls: $CGROUP_NAME: No such file or directory"
echo -e "\nAll test steps completed successfully!"