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sched: Use an accessor to read the rq clock

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Read the runqueue clock through an accessor. This
prepares for adding a debugging infrastructure to
detect missing or redundant calls to update_rq_clock()
between a scheduler's entry and exit point.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Li Zhong <zhong@linux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Paul Turner <pjt@google.com>
Cc: Mike Galbraith <efault@gmx.de>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1365724262-20142-6-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Frederic Weisbecker
2013-04-12 01:51:02 +02:00
committed by Ingo Molnar
parent 1a55af2e45
commit 78becc2709
6 changed files with 47 additions and 37 deletions
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10
kernel/sched/sched.h
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@@ -548,6 +548,16 @@ DECLARE_PER_CPU(struct rq, runqueues);
#define cpu_curr(cpu) (cpu_rq(cpu)->curr)
#define raw_rq() (&__raw_get_cpu_var(runqueues))
static inline u64 rq_clock(struct rq *rq)
{
return rq->clock;
}
static inline u64 rq_clock_task(struct rq *rq)
{
return rq->clock_task;
}
#ifdef CONFIG_SMP
#define rcu_dereference_check_sched_domain(p) \