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>
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 @@
* 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 @@
* 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 @@
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)
{
diff --git a/kernel/softirq.c b/kernel/softirq.c
index b73e681..d55e315 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -220,7 +220,7 @@
current->flags &= ~PF_MEMALLOC;
pending = local_softirq_pending();
- account_system_vtime(current);
+ vtime_account(current);
__local_bh_disable((unsigned long)__builtin_return_address(0),
SOFTIRQ_OFFSET);
@@ -271,7 +271,7 @@
lockdep_softirq_exit();
- account_system_vtime(current);
+ vtime_account(current);
__local_bh_enable(SOFTIRQ_OFFSET);
tsk_restore_flags(current, old_flags, PF_MEMALLOC);
}
@@ -340,7 +340,7 @@
*/
void irq_exit(void)
{
- account_system_vtime(current);
+ vtime_account(current);
trace_hardirq_exit();
sub_preempt_count(IRQ_EXIT_OFFSET);
if (!in_interrupt() && local_softirq_pending())