system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-09-21 19:47:35 +00:00
Code Issues Packages Projects Releases Wiki Activity

rcu: Make _batches_completed() functions return unsigned long

Browse source 
Long ago, the various ->completed fields were of type long, but now are
unsigned long due to signed-integer-overflow concerns.  However, the
various _batches_completed() functions remained of type long, even though
their only purpose in life is to return the corresponding ->completed
field.  This patch cleans this up by changing these functions' return
types to unsigned long.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2014-11-21 12:49:13 -08:00
parent 79619cf515
commit 9733e4f0a9
5 changed files with 11 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
include/linux/rcutiny.h
View file

@ -94,7 +94,7 @@ static inline void rcu_virt_note_context_switch(int cpu)
/*
* Return the number of grace periods.
*/
static inline long rcu_batches_completed(void)
static inline unsigned long rcu_batches_completed(void)
{
return 0;
}
@ -102,7 +102,7 @@ static inline long rcu_batches_completed(void)
/*
* Return the number of bottom-half grace periods.
*/
static inline long rcu_batches_completed_bh(void)
static inline unsigned long rcu_batches_completed_bh(void)
{
return 0;
}

6
include/linux/rcutree.h
View file

@ -81,9 +81,9 @@ void cond_synchronize_rcu(unsigned long oldstate);
extern unsigned long rcutorture_testseq;
extern unsigned long rcutorture_vernum;
long rcu_batches_completed(void);
long rcu_batches_completed_bh(void);
long rcu_batches_completed_sched(void);
unsigned long rcu_batches_completed(void);
unsigned long rcu_batches_completed_bh(void);
unsigned long rcu_batches_completed_sched(void);
void show_rcu_gp_kthreads(void);
void rcu_force_quiescent_state(void);

4
kernel/rcu/tree.c
View file

@ -317,7 +317,7 @@ static int rcu_pending(void);
/*
* Return the number of RCU-sched batches processed thus far for debug & stats.
*/
long rcu_batches_completed_sched(void)
unsigned long rcu_batches_completed_sched(void)
{
return rcu_sched_state.completed;
}
@ -326,7 +326,7 @@ EXPORT_SYMBOL_GPL(rcu_batches_completed_sched);
/*
* Return the number of RCU BH batches processed thus far for debug & stats.
*/
long rcu_batches_completed_bh(void)
unsigned long rcu_batches_completed_bh(void)
{
return rcu_bh_state.completed;
}

2
kernel/rcu/tree.h
View file

@ -546,7 +546,7 @@ DECLARE_PER_CPU(char, rcu_cpu_has_work);
/* Forward declarations for rcutree_plugin.h */
static void rcu_bootup_announce(void);
long rcu_batches_completed(void);
unsigned long rcu_batches_completed(void);
static void rcu_preempt_note_context_switch(void);
static int rcu_preempt_blocked_readers_cgp(struct rcu_node *rnp);
#ifdef CONFIG_HOTPLUG_CPU

6
kernel/rcu/tree_plugin.h
View file

@ -117,7 +117,7 @@ static void __init rcu_bootup_announce(void)
* Return the number of RCU-preempt batches processed thus far
* for debug and statistics.
*/
static long rcu_batches_completed_preempt(void)
static unsigned long rcu_batches_completed_preempt(void)
{
return rcu_preempt_state.completed;
}
@ -126,7 +126,7 @@ EXPORT_SYMBOL_GPL(rcu_batches_completed_preempt);
/*
* Return the number of RCU batches processed thus far for debug & stats.
*/
long rcu_batches_completed(void)
unsigned long rcu_batches_completed(void)
{
return rcu_batches_completed_preempt();
}
@ -935,7 +935,7 @@ static void __init rcu_bootup_announce(void)
/*
* Return the number of RCU batches processed thus far for debug & stats.
*/
long rcu_batches_completed(void)
unsigned long rcu_batches_completed(void)
{
return rcu_batches_completed_sched();
}