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RCU

include/sync/rcu.h View source View on GitHub

Forward declaration so we can put this pointer in threads

Structs

Section titled “Structs”

rcu_cb

Section titled “rcu_cb”
struct rcu_cb (2 fields) source
§ struct list_node list
§ rcu_fn fn

__RCU_READ_LOCKED_ctx

Section titled “__RCU_READ_LOCKED_ctx”
TSA_REENTRANT_CAPABILITY_DECLARE("rcu", RCU_READ_LOCKED) (2 declarations) source
§ struct __RCU_READ_LOCKED_ctx
§ struct __RCU_READ_LOCKED_ctx RCU_READ_LOCKED

Type Aliases

Section titled “Type Aliases”

rcu_fn

Section titled “rcu_fn”
typedef void (*rcu_fn)(struct rcu_cb * *)
source

Functions

Section titled “Functions”

rcu_init

Section titled “rcu_init”
void rcu_init(void)
source

rcu_synchronize

Section titled “rcu_synchronize”
void rcu_synchronize(void)
source

rcu_defer

Section titled “rcu_defer”
void rcu_defer(struct rcu_cb *cc_nonnull_ptr, rcu_fn cc_nonnull_ptr)
source

rcu_note_context_switch

Section titled “rcu_note_context_switch”
void rcu_note_context_switch(struct thread *outgoing)
source

rcu_note_irq_exit

Section titled “rcu_note_irq_exit”
void rcu_note_irq_exit(void)
source

rcu_idle_enter

Section titled “rcu_idle_enter”
void rcu_idle_enter(void)
source

rcu_idle_exit

Section titled “rcu_idle_exit”
void rcu_idle_exit(void)
source

rcu_read_guard_exit

Section titled “rcu_read_guard_exit”
void rcu_read_guard_exit(int *unused)
source

rcu_read_guard_enter

Section titled “rcu_read_guard_enter”
int rcu_read_guard_enter(void)
source

Macros

Section titled “Macros”

rcu_cb_from_list_node

Section titled “rcu_cb_from_list_node”
#define rcu_cb_from_list_node(ln)
source
TODO

as debug flags get better, move away from raw TEST_ENABLED

Expansion
#define rcu_cb_from_list_node(ln) (container_of(ln, struct rcu_cb, list))

rcu_plain_t

Section titled “rcu_plain_t”
#define rcu_plain_t(p)
source
Expansion
#define rcu_plain_t(p) __typeof_unqual__(*(p)) *

rcu_dereference

Section titled “rcu_dereference”
#define rcu_dereference(p)
source
Expansion
#define rcu_dereference(p) \
    ((rcu_plain_t(p)) atomic_load_acq((_Atomic __typeof_unqual__(p) *) &(p)))

rcu_assign_pointer

Section titled “rcu_assign_pointer”
#define rcu_assign_pointer(p, v)
source
Expansion
#define rcu_assign_pointer(p, v) \
    ({ \
        rcu_plain_t(p) _v = (v); \
        atomic_store_release((_Atomic __typeof_unqual__(p) *) &(p), \
                             (__typeof_unqual__(p)) _v); \
        _v; \
    })

rcu_access_pointer

Section titled “rcu_access_pointer”
#define rcu_access_pointer(p)
source
Expansion
#define rcu_access_pointer(p) ((rcu_plain_t(p)) ca_read_once(p))

RCU_INIT_POINTER

Section titled “RCU_INIT_POINTER”
#define RCU_INIT_POINTER(p, v)
source
Expansion
#define RCU_INIT_POINTER(p, v) ((p) = (typeof(p)) (rcu_plain_t(p))(v))

rcu_read_guard

Section titled “rcu_read_guard”
#define rcu_read_guard()
source
Expansion
#define rcu_read_guard() \
    cc_cleanup(rcu_read_guard_exit) int PP_CONCAT( \
        rcu_read_guard_, __COUNTER__) = rcu_read_guard_enter()