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rcu: Make cpu_needs_another_gp() be bool 

The cpu_needs_another_gp() function is currently of type int, but only
returns zero or one.  Bow to reality and make it be of type bool.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2015-10-31 00:01:18 -07:00
parent a87f203e27
commit d117c8aa1d
1 changed files with 7 additions and 7 deletions
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14
kernel/rcu/tree.c
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@ -597,25 +597,25 @@ static int rcu_future_needs_gp(struct rcu_state *rsp)
* The caller must have disabled interrupts to prevent races with * The caller must have disabled interrupts to prevent races with
* normal callback registry. * normal callback registry.
*/ */
static int static bool
cpu_needs_another_gp(struct rcu_state *rsp, struct rcu_data *rdp) cpu_needs_another_gp(struct rcu_state *rsp, struct rcu_data *rdp)
{ {
int i; int i;
if (rcu_gp_in_progress(rsp)) if (rcu_gp_in_progress(rsp))
return 0; /* No, a grace period is already in progress. */ return false; /* No, a grace period is already in progress. */
if (rcu_future_needs_gp(rsp)) if (rcu_future_needs_gp(rsp))
return 1; /* Yes, a no-CBs CPU needs one. */ return true; /* Yes, a no-CBs CPU needs one. */
if (!rdp->nxttail[RCU_NEXT_TAIL]) if (!rdp->nxttail[RCU_NEXT_TAIL])
return 0; /* No, this is a no-CBs (or offline) CPU. */ return false; /* No, this is a no-CBs (or offline) CPU. */
if (*rdp->nxttail[RCU_NEXT_READY_TAIL]) if (*rdp->nxttail[RCU_NEXT_READY_TAIL])
return 1; /* Yes, this CPU has newly registered callbacks. */ return true; /* Yes, CPU has newly registered callbacks. */
for (i = RCU_WAIT_TAIL; i < RCU_NEXT_TAIL; i++) for (i = RCU_WAIT_TAIL; i < RCU_NEXT_TAIL; i++)
if (rdp->nxttail[i - 1] != rdp->nxttail[i] && if (rdp->nxttail[i - 1] != rdp->nxttail[i] &&
ULONG_CMP_LT(READ_ONCE(rsp->completed), ULONG_CMP_LT(READ_ONCE(rsp->completed),
rdp->nxtcompleted[i])) rdp->nxtcompleted[i]))
return 1; /* Yes, CBs for future grace period. */ return true; /* Yes, CBs for future grace period. */
return 0; /* No grace period needed. */ return false; /* No grace period needed. */
} }
/* /*