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>

1 files changed, 3 insertions, 3 deletions

diff --git a/kernel/softirq.c b/kernel/softirq.c
index b73e681df09e..d55e3159f928 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -220,7 +220,7 @@ asmlinkage void __do_softirq(void)
         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 @@ restart:
 
         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 @@ static inline void invoke_softirq(void)
  */
 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())