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Diffstat (limited to 'arch/powerpc/kernel/time.c')
-rw-r--r--arch/powerpc/kernel/time.c47
1 files changed, 28 insertions, 19 deletions
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 39899d7ebda..29b6d3e1ea2 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -291,13 +291,12 @@ static inline u64 calculate_stolen_time(u64 stop_tb)
* Account time for a transition between system, hard irq
* or soft irq state.
*/
-void vtime_account(struct task_struct *tsk)
+static u64 vtime_delta(struct task_struct *tsk,
+ u64 *sys_scaled, u64 *stolen)
{
- u64 now, nowscaled, delta, deltascaled;
- unsigned long flags;
- u64 stolen, udelta, sys_scaled, user_scaled;
+ u64 now, nowscaled, deltascaled;
+ u64 udelta, delta, user_scaled;
- local_irq_save(flags);
now = mftb();
nowscaled = read_spurr(now);
get_paca()->system_time += now - get_paca()->starttime;
@@ -305,7 +304,7 @@ void vtime_account(struct task_struct *tsk)
deltascaled = nowscaled - get_paca()->startspurr;
get_paca()->startspurr = nowscaled;
- stolen = calculate_stolen_time(now);
+ *stolen = calculate_stolen_time(now);
delta = get_paca()->system_time;
get_paca()->system_time = 0;
@@ -322,28 +321,38 @@ void vtime_account(struct task_struct *tsk)
* the user ticks get saved up in paca->user_time_scaled to be
* used by account_process_tick.
*/
- sys_scaled = delta;
+ *sys_scaled = delta;
user_scaled = udelta;
if (deltascaled != delta + udelta) {
if (udelta) {
- sys_scaled = deltascaled * delta / (delta + udelta);
- user_scaled = deltascaled - sys_scaled;
+ *sys_scaled = deltascaled * delta / (delta + udelta);
+ user_scaled = deltascaled - *sys_scaled;
} else {
- sys_scaled = deltascaled;
+ *sys_scaled = deltascaled;
}
}
get_paca()->user_time_scaled += user_scaled;
- if (in_interrupt() || idle_task(smp_processor_id()) != tsk) {
- account_system_time(tsk, 0, delta, sys_scaled);
- if (stolen)
- account_steal_time(stolen);
- } else {
- account_idle_time(delta + stolen);
- }
- local_irq_restore(flags);
+ return delta;
+}
+
+void vtime_account_system(struct task_struct *tsk)
+{
+ u64 delta, sys_scaled, stolen;
+
+ delta = vtime_delta(tsk, &sys_scaled, &stolen);
+ account_system_time(tsk, 0, delta, sys_scaled);
+ if (stolen)
+ account_steal_time(stolen);
+}
+
+void vtime_account_idle(struct task_struct *tsk)
+{
+ u64 delta, sys_scaled, stolen;
+
+ delta = vtime_delta(tsk, &sys_scaled, &stolen);
+ account_idle_time(delta + stolen);
}
-EXPORT_SYMBOL_GPL(vtime_account);
/*
* Transfer the user and system times accumulated in the paca