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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2012-09-08 15:23:11 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2012-09-25 15:31:31 +0200 |
| commit | bf9fae9f5e4ca8dce4708812f9ad6281e61df109 (patch) | |
| tree | 02318ac3db48dd993a4a430de5de66a337895d16 /kernel/sched | |
| parent | bc2a27cd27271c5257989a57f511be86b26f5e54 (diff) | |
| download | op-kernel-dev-bf9fae9f5e4ca8dce4708812f9ad6281e61df109.zip op-kernel-dev-bf9fae9f5e4ca8dce4708812f9ad6281e61df109.tar.gz | |
cputime: Use a proper subsystem naming for vtime related APIs
Use a naming based on vtime as a prefix for virtual based
cputime accounting APIs:
- account_system_vtime() -> vtime_account()
- account_switch_vtime() -> vtime_task_switch()
It makes it easier to allow for further declension such
as vtime_account_system(), vtime_account_idle(), ... if we
want to find out the context we account to from generic code.
This also make it better to know on which subsystem these APIs
refer to.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/core.c | 2 | ||||
| -rw-r--r-- | kernel/sched/cputime.c | 8 |
2 files changed, 5 insertions, 5 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index ba144b1..21e4dcf 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -1764,7 +1764,7 @@ static void finish_task_switch(struct rq *rq, struct task_struct *prev) * Manfred Spraul <manfred@colorfullife.com> */ prev_state = prev->state; - account_switch_vtime(prev); + vtime_task_switch(prev); finish_arch_switch(prev); perf_event_task_sched_in(prev, current); finish_lock_switch(rq, prev); diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index 372692b..53f5b12 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -10,11 +10,11 @@ /* * There are no locks covering percpu hardirq/softirq time. - * They are only modified in account_system_vtime, on corresponding CPU + * They are only modified in vtime_account, on corresponding CPU * with interrupts disabled. So, writes are safe. * They are read and saved off onto struct rq in update_rq_clock(). * This may result in other CPU reading this CPU's irq time and can - * race with irq/account_system_vtime on this CPU. We would either get old + * race with irq/vtime_account on this CPU. We would either get old * or new value with a side effect of accounting a slice of irq time to wrong * task when irq is in progress while we read rq->clock. That is a worthy * compromise in place of having locks on each irq in account_system_time. @@ -43,7 +43,7 @@ DEFINE_PER_CPU(seqcount_t, irq_time_seq); * Called before incrementing preempt_count on {soft,}irq_enter * and before decrementing preempt_count on {soft,}irq_exit. */ -void account_system_vtime(struct task_struct *curr) +void vtime_account(struct task_struct *curr) { unsigned long flags; s64 delta; @@ -73,7 +73,7 @@ void account_system_vtime(struct task_struct *curr) irq_time_write_end(); local_irq_restore(flags); } -EXPORT_SYMBOL_GPL(account_system_vtime); +EXPORT_SYMBOL_GPL(vtime_account); static int irqtime_account_hi_update(void) { |
