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sched: Better name for for_each_domain_rd 

As suggested by Peter Ziljstra, make better choice of name
for for_each_domain_rd(), containing "rcu_dereference", given
that it is but a wrapper for rcu_dereference_check().  The name
rcu_dereference_check_sched_domain() does that and provides a
separate per-subsystem name space.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
LKML-Reference: <1266887105-1528-7-git-send-email-paulmck@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Paul E. McKenney 2010-02-22 17:04:51 -08:00 committed by Ingo Molnar
parent d11c563dd2
commit 497f0ab39c
1 changed files with 2 additions and 2 deletions
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4
kernel/sched.c
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@ -645,7 +645,7 @@ static inline int cpu_of(struct rq *rq)
#endif #endif
} }
#define for_each_domain_rd(p) \ #define rcu_dereference_check_sched_domain(p) \
rcu_dereference_check((p), \ rcu_dereference_check((p), \
rcu_read_lock_sched_held() || \ rcu_read_lock_sched_held() || \
lockdep_is_held(&sched_domains_mutex)) lockdep_is_held(&sched_domains_mutex))
@ -658,7 +658,7 @@ static inline int cpu_of(struct rq *rq)
* preempt-disabled sections. * preempt-disabled sections.
*/ */
#define for_each_domain(cpu, __sd) \ #define for_each_domain(cpu, __sd) \
for (__sd = for_each_domain_rd(cpu_rq(cpu)->sd); __sd; __sd = __sd->parent) for (__sd = rcu_dereference_check_sched_domain(cpu_rq(cpu)->sd); __sd; __sd = __sd->parent)
#define cpu_rq(cpu) (&per_cpu(runqueues, (cpu))) #define cpu_rq(cpu) (&per_cpu(runqueues, (cpu)))
#define this_rq() (&__get_cpu_var(runqueues)) #define this_rq() (&__get_cpu_var(runqueues))