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vtime: Make vtime_account_system() irqsafe

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vtime_account_system() currently has only one caller with
vtime_account() which is irq safe.

Now we are going to call it from other places like kvm where
irqs are not always disabled by the time we account the cputime.

So let's make it irqsafe. The arch implementation part is now
prefixed with "__".

vtime_account_idle() arch implementation is prefixed accordingly
to stay consistent.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.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: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
This commit is contained in:
Frederic Weisbecker
2012-10-24 18:05:51 +02:00
parent dcbf832e58
commit 11113334d1
5 changed files with 26 additions and 10 deletions
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4
arch/powerpc/kernel/time.c
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@@ -336,7 +336,7 @@ static u64 vtime_delta(struct task_struct *tsk,
return delta;
}
void vtime_account_system(struct task_struct *tsk)
void __vtime_account_system(struct task_struct *tsk)
{
u64 delta, sys_scaled, stolen;
@@ -346,7 +346,7 @@ void vtime_account_system(struct task_struct *tsk)
account_steal_time(stolen);
}
void vtime_account_idle(struct task_struct *tsk)
void __vtime_account_idle(struct task_struct *tsk)
{
u64 delta, sys_scaled, stolen;