Defined in 2 files as a function:
- include/linux/memcontrol.h, line 539 (as a function)
- include/linux/memcontrol.h, line 1097 (as a function)
Referenced in 4 files:
Smatch caller information:
mm/memcontrol.c __memcg_kmem_charge_page() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 1-u64max |
| DATA_SOURCE | 0 | objcg | r current_obj_cgroup |
| RX_PATH | |||
| TASK_NOT_RUNNING |
mm/memcontrol.c __memcg_slab_post_alloc_hook() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 1-u64max |
| DATA_SOURCE | 0 | objcg | r current_obj_cgroup |
| RX_PATH | |||
| TASK_NOT_RUNNING |
mm/memcontrol.c charge_memcg() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 0,4096-ptr_max |
| DATA_SOURCE | 0 | objcg | r get_obj_cgroup_from_memcg |
| RX_PATH | |||
| TASK_NOT_RUNNING |
mm/memcontrol.c mem_cgroup_migrate() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 0,4096-ptr_max |
| DATA_SOURCE | 0 | objcg | r get_migration_objcg |
| PREEMPT_ADD | |||
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| HALF_LOCKED2 | &ai->migrate_lock | ||
| HALF_LOCKED2 | &ctx->completion_lock | ||
| HALF_LOCKED2 | &ctx->ring_lock | ||
| HALF_LOCKED2 | flags |
mm/memcontrol.c mem_cgroup_migrate() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 8-u64max |
| DATA_SOURCE | 0 | objcg | r folio_objcg |
| PREEMPT_ADD | |||
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| HALF_LOCKED2 | &ai->migrate_lock | ||
| HALF_LOCKED2 | &ctx->completion_lock | ||
| HALF_LOCKED2 | &ctx->ring_lock | ||
| HALF_LOCKED2 | flags |
mm/memcontrol.c mem_cgroup_replace_folio() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 4096-ptr_max |
| DATA_SOURCE | 0 | objcg | r get_migration_objcg |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| LOCK2 | rcu_read | ||
| HALF_LOCKED2 | irq |
mm/memcontrol.c obj_cgroup_charge_zswap() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 4096-ptr_max |
| CAPPED_DATA | 0 | objcg | 1 |
| DATA_SOURCE | 0 | objcg | $0 |
mm/memcontrol.c obj_cgroup_get_many() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| BUF_SIZE | 0 | objcg | (-1),56 |
| BUF_SIZE | 0 | objcg | (-1),56 |
| CAPPED_DATA | 0 | objcg | 1 |
| DATA_SOURCE | 0 | objcg | $0 |
| PREEMPT_ADD | |||
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| HALF_LOCKED2 | irq |
mm/memcontrol.c obj_cgroup_put() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 1-u64max |
| DATA_SOURCE | 0 | objcg | $0 |
| PREEMPT_ADD | |||
| RX_PATH | |||
| TASK_NOT_RUNNING |
mm/memcontrol.c obj_cgroup_tryget() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 1-u64max |
| DATA_SOURCE | 0 | objcg | $0 |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| LOCK2 | rcu_read |
mm/memcontrol.c obj_cgroup_uncharge_zswap() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 4096-ptr_max |
| DATA_SOURCE | 0 | objcg | $0 |
| PREEMPT_ADD | |||
| RX_PATH | |||
| TASK_NOT_RUNNING |
mm/memcontrol.c uncharge_folio() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 8-u64max |
| CAPPED_DATA | 0 | objcg | 1 |
| DATA_SOURCE | 0 | objcg | r folio_objcg |
| RX_PATH | |||
| TASK_NOT_RUNNING |
mm/page_io.c obj_cgroup_put() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 4096-ptr_max |
| DATA_SOURCE | 0 | objcg | $0 |
| RX_PATH | |||
| TASK_NOT_RUNNING |
mm/percpu.c obj_cgroup_get_many() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 4096-ptr_max |
| PARAM_VALUE | 0 | objcg->is_root | 0 |
| DATA_SOURCE | 0 | objcg | $0 |
mm/percpu.c obj_cgroup_put() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 4096-ptr_max |
| CAPPED_DATA | 0 | objcg | 1 |
| DATA_SOURCE | 0 | objcg | $0 |
| PREEMPT_ADD | |||
| LOCK2 | flags | ||
| LOCK2 | global &pcpu_lock |
mm/percpu.c pcpu_memcg_pre_alloc_hook() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 1-u64max |
| DATA_SOURCE | 0 | objcg | r current_obj_cgroup |
kernel/bpf/syscall.c obj_cgroup_get_many() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 1-u64max |
| DATA_SOURCE | 0 | objcg | $0 |
kernel/bpf/syscall.c obj_cgroup_put() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 1-u64max |
| DATA_SOURCE | 0 | objcg | $0 |
| HALF_LOCKED2 | &pool->lock |
mm/zswap.c obj_cgroup_get_many() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 4096-ptr_max |
| DATA_SOURCE | 0 | objcg | $0 |
mm/zswap.c obj_cgroup_put() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 4096-ptr_max |
| CAPPED_DATA | 0 | objcg | 1 |
| DATA_SOURCE | 0 | objcg | $0 |
| PREEMPT_ADD | |||
| RX_PATH | |||
| TASK_NOT_RUNNING |
kernel/bpf/memalloc.c obj_cgroup_get_many() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 1-u64max |
| DATA_SOURCE | 0 | objcg | $0 |
kernel/bpf/memalloc.c obj_cgroup_put() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 1-u64max |
| DATA_SOURCE | 0 | objcg | $0 |
mm/memcontrol-v1.c __memcg1_swapout() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 4096-ptr_max |
| DATA_SOURCE | 0 | objcg | r folio_objcg |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| LOCK2 | irq | ||
| LOCK2 | rcu_read | ||
| HALF_LOCKED2 | &(&mapping->i_pages)->xa_lock | ||
| HALF_LOCKED2 | &mapping->host->i_lock |
mm/memcontrol-v1.c obj_cgroup_put() -> obj_cgroup_is_root()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | objcg | 4096-ptr_max |
| DATA_SOURCE | 0 | objcg | $0 |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| LOCK2 | irq | ||
| HALF_LOCKED2 | &(&mapping->i_pages)->xa_lock | ||
| HALF_LOCKED2 | &mapping->host->i_lock |