redonkable/alistair23-linux
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PM / OPP: using kfree_rcu() to simplify the code

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The callback function of call_rcu() just calls a kfree(), so we
can use kfree_rcu() instead of call_rcu() + callback function.

dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Wei Yongjun 2012-10-31 01:29:17 +01:00 committed by Rafael J. Wysocki
parent 0779726cc2
commit ea83f81b48
1 changed files with 1 additions and 12 deletions
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13
drivers/base/power/opp.c
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@ -460,17 +460,6 @@ int opp_add(struct device *dev, unsigned long freq, unsigned long u_volt)
return 0;
}
/**
* opp_free_rcu() - helper to clear the struct opp when grace period has
* elapsed without blocking the the caller of opp_set_availability
*/
static void opp_free_rcu(struct rcu_head *head)
{
struct opp *opp = container_of(head, struct opp, head);
kfree(opp);
}
/**
* opp_set_availability() - helper to set the availability of an opp
* @dev: device for which we do this operation
@ -542,7 +531,7 @@ static int opp_set_availability(struct device *dev, unsigned long freq,
list_replace_rcu(&opp->node, &new_opp->node);
mutex_unlock(&dev_opp_list_lock);
call_rcu(&opp->head, opp_free_rcu);
kfree_rcu(opp, head);
/* Notify the change of the OPP availability */
if (availability_req)