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rcu: Make rcu_gp_init() be bool rather than int

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The return value from rcu_gp_init() is always used as a bool, so
this commit makes it be a bool.

Reported-by: Iftekhar Ahmed <ahmedi@oregonstate.edu>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney
2015-11-07 23:35:00 -08:00
parent e11f13355b
commit 45fed3e7cf
1 changed files with 5 additions and 5 deletions
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10
kernel/rcu/tree.c
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@ -1814,9 +1814,9 @@ static void rcu_gp_slow(struct rcu_state *rsp, int delay)
} }
/* /*
* Initialize a new grace period. Return 0 if no grace period required. * Initialize a new grace period. Return false if no grace period required.
*/ */
static int rcu_gp_init(struct rcu_state *rsp) static bool rcu_gp_init(struct rcu_state *rsp)
{ {
unsigned long oldmask; unsigned long oldmask;
struct rcu_data *rdp; struct rcu_data *rdp;
@ -1827,7 +1827,7 @@ static int rcu_gp_init(struct rcu_state *rsp)
if (!READ_ONCE(rsp->gp_flags)) { if (!READ_ONCE(rsp->gp_flags)) {
/* Spurious wakeup, tell caller to go back to sleep. */ /* Spurious wakeup, tell caller to go back to sleep. */
raw_spin_unlock_irq(&rnp->lock); raw_spin_unlock_irq(&rnp->lock);
return 0; return false;
} }
WRITE_ONCE(rsp->gp_flags, 0); /* Clear all flags: New grace period. */ WRITE_ONCE(rsp->gp_flags, 0); /* Clear all flags: New grace period. */
@ -1837,7 +1837,7 @@ static int rcu_gp_init(struct rcu_state *rsp)
* Not supposed to be able to happen. * Not supposed to be able to happen.
*/ */
raw_spin_unlock_irq(&rnp->lock); raw_spin_unlock_irq(&rnp->lock);
return 0; return false;
} }
/* Advance to a new grace period and initialize state. */ /* Advance to a new grace period and initialize state. */
@ -1929,7 +1929,7 @@ static int rcu_gp_init(struct rcu_state *rsp)
WRITE_ONCE(rsp->gp_activity, jiffies); WRITE_ONCE(rsp->gp_activity, jiffies);
} }
return 1; return true;
} }
/* /*