Commit a616aec9 authored by Ingo Molnar's avatar Ingo Molnar Committed by Paul E. McKenney
Browse files

rcu: Fix various typos in comments 



Fix ~12 single-word typos in RCU code comments.

[ paulmck: Apply feedback from Randy Dunlap. ]
Reviewed-by: default avatarRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Signed-off-by: default avatarPaul E. McKenney <paulmck@kernel.org>
parent e75bcd48

kernel/rcu/srcutree.c

+2 −2
Original line number Diff line number Diff line
@@ -777,9 +777,9 @@ static bool srcu_might_be_idle(struct srcu_struct *ssp) 
	spin_unlock_irqrestore_rcu_node(sdp, flags);



	/*

	 * No local callbacks, so probabalistically probe global state.

	 * No local callbacks, so probabilistically probe global state.

	 * Exact information would require acquiring locks, which would

	 * kill scalability, hence the probabalistic nature of the probe.

	 * kill scalability, hence the probabilistic nature of the probe.

	 */



	/* First, see if enough time has passed since the last GP. */

kernel/rcu/sync.c

+2 −2
Original line number Diff line number Diff line
@@ -94,9 +94,9 @@ static void rcu_sync_func(struct rcu_head *rhp) 
		rcu_sync_call(rsp);

	} else {

		/*

		 * We're at least a GP after the last rcu_sync_exit(); eveybody

		 * We're at least a GP after the last rcu_sync_exit(); everybody

		 * will now have observed the write side critical section.

		 * Let 'em rip!.

		 * Let 'em rip!

		 */

		WRITE_ONCE(rsp->gp_state, GP_IDLE);

	}

kernel/rcu/tasks.h

+4 −4
Original line number Diff line number Diff line
@@ -23,7 +23,7 @@ typedef void (*postgp_func_t)(struct rcu_tasks *rtp); 
 * struct rcu_tasks - Definition for a Tasks-RCU-like mechanism.

 * @cbs_head: Head of callback list.

 * @cbs_tail: Tail pointer for callback list.

 * @cbs_wq: Wait queue allowning new callback to get kthread's attention.

 * @cbs_wq: Wait queue allowing new callback to get kthread's attention.

 * @cbs_lock: Lock protecting callback list.

 * @kthread_ptr: This flavor's grace-period/callback-invocation kthread.

 * @gp_func: This flavor's grace-period-wait function.
@@ -504,7 +504,7 @@ DEFINE_RCU_TASKS(rcu_tasks, rcu_tasks_wait_gp, call_rcu_tasks, "RCU Tasks"); 
 * or transition to usermode execution.  As such, there are no read-side

 * primitives analogous to rcu_read_lock() and rcu_read_unlock() because

 * this primitive is intended to determine that all tasks have passed

 * through a safe state, not so much for data-strcuture synchronization.

 * through a safe state, not so much for data-structure synchronization.

 *

 * See the description of call_rcu() for more detailed information on

 * memory ordering guarantees.
@@ -637,7 +637,7 @@ DEFINE_RCU_TASKS(rcu_tasks_rude, rcu_tasks_rude_wait_gp, call_rcu_tasks_rude, 
 * there are no read-side primitives analogous to rcu_read_lock() and

 * rcu_read_unlock() because this primitive is intended to determine

 * that all tasks have passed through a safe state, not so much for

 * data-strcuture synchronization.

 * data-structure synchronization.

 *

 * See the description of call_rcu() for more detailed information on

 * memory ordering guarantees.
@@ -1163,7 +1163,7 @@ static void exit_tasks_rcu_finish_trace(struct task_struct *t) 
 * there are no read-side primitives analogous to rcu_read_lock() and

 * rcu_read_unlock() because this primitive is intended to determine

 * that all tasks have passed through a safe state, not so much for

 * data-strcuture synchronization.

 * data-structure synchronization.

 *

 * See the description of call_rcu() for more detailed information on

 * memory ordering guarantees.

kernel/rcu/tree.c

+3 −3
Original line number Diff line number Diff line
@@ -2489,7 +2489,7 @@ int rcutree_dead_cpu(unsigned int cpu) 


/*

 * Invoke any RCU callbacks that have made it to the end of their grace

 * period.  Thottle as specified by rdp->blimit.

 * period.  Throttle as specified by rdp->blimit.

 */

static void rcu_do_batch(struct rcu_data *rdp)

{
@@ -3848,7 +3848,7 @@ EXPORT_SYMBOL_GPL(start_poll_synchronize_rcu); 
 *

 * If a full RCU grace period has elapsed since the earlier call from

 * which oldstate was obtained, return @true, otherwise return @false.

 * If @false is returned, it is the caller's responsibilty to invoke this

 * If @false is returned, it is the caller's responsibility to invoke this

 * function later on until it does return @true.  Alternatively, the caller

 * can explicitly wait for a grace period, for example, by passing @oldstate

 * to cond_synchronize_rcu() or by directly invoking synchronize_rcu().
@@ -4094,7 +4094,7 @@ EXPORT_SYMBOL_GPL(rcu_barrier); 
/*

 * Propagate ->qsinitmask bits up the rcu_node tree to account for the

 * first CPU in a given leaf rcu_node structure coming online.  The caller

 * must hold the corresponding leaf rcu_node ->lock with interrrupts

 * must hold the corresponding leaf rcu_node ->lock with interrupts

 * disabled.

 */

static void rcu_init_new_rnp(struct rcu_node *rnp_leaf)

kernel/rcu/tree.h

+1 −1
Original line number Diff line number Diff line
@@ -153,7 +153,7 @@ struct rcu_data { 
	unsigned long	gp_seq;		/* Track rsp->gp_seq counter. */

	unsigned long	gp_seq_needed;	/* Track furthest future GP request. */

	union rcu_noqs	cpu_no_qs;	/* No QSes yet for this CPU. */

	bool		core_needs_qs;	/* Core waits for quiesc state. */

	bool		core_needs_qs;	/* Core waits for quiescent state. */

	bool		beenonline;	/* CPU online at least once. */

	bool		gpwrap;		/* Possible ->gp_seq wrap. */

	bool		exp_deferred_qs; /* This CPU awaiting a deferred QS? */