percpu-refcount: cosmetic updates
* s/percpu_ref_release/percpu_ref_func_t/ as it's customary to have _t postfix for types and the type is gonna be used for a different type of callback too. * Add @ARG to function comments. * Drop unnecessary and unaligned indentation from percpu_ref_init() function comment. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Kent Overstreet <koverstreet@google.com>
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@ -51,7 +51,7 @@
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#include <linux/rcupdate.h>
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struct percpu_ref;
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typedef void (percpu_ref_release)(struct percpu_ref *);
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typedef void (percpu_ref_func_t)(struct percpu_ref *);
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struct percpu_ref {
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atomic_t count;
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@ -62,11 +62,11 @@ struct percpu_ref {
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* percpu_ref_kill_rcu())
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*/
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unsigned __percpu *pcpu_count;
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percpu_ref_release *release;
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percpu_ref_func_t *release;
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struct rcu_head rcu;
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};
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int percpu_ref_init(struct percpu_ref *, percpu_ref_release *);
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int percpu_ref_init(struct percpu_ref *ref, percpu_ref_func_t *release);
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void percpu_ref_kill(struct percpu_ref *ref);
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#define PCPU_STATUS_BITS 2
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@ -78,6 +78,7 @@ void percpu_ref_kill(struct percpu_ref *ref);
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/**
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* percpu_ref_get - increment a percpu refcount
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* @ref: percpu_ref to get
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*
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* Analagous to atomic_inc().
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*/
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@ -99,6 +100,7 @@ static inline void percpu_ref_get(struct percpu_ref *ref)
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/**
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* percpu_ref_put - decrement a percpu refcount
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* @ref: percpu_ref to put
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*
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* Decrement the refcount, and if 0, call the release function (which was passed
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* to percpu_ref_init())
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@ -33,8 +33,8 @@
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/**
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* percpu_ref_init - initialize a percpu refcount
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* @ref: ref to initialize
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* @release: function which will be called when refcount hits 0
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* @ref: percpu_ref to initialize
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* @release: function which will be called when refcount hits 0
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*
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* Initializes the refcount in single atomic counter mode with a refcount of 1;
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* analagous to atomic_set(ref, 1).
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@ -42,7 +42,7 @@
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* Note that @release must not sleep - it may potentially be called from RCU
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* callback context by percpu_ref_kill().
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*/
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int percpu_ref_init(struct percpu_ref *ref, percpu_ref_release *release)
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int percpu_ref_init(struct percpu_ref *ref, percpu_ref_func_t *release)
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{
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atomic_set(&ref->count, 1 + PCPU_COUNT_BIAS);
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@ -98,6 +98,7 @@ static void percpu_ref_kill_rcu(struct rcu_head *rcu)
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/**
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* percpu_ref_kill - safely drop initial ref
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* @ref: percpu_ref to kill
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*
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* Must be used to drop the initial ref on a percpu refcount; must be called
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* precisely once before shutdown.
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