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Subject[PATCH v4 2/2] powerpc/time: no steal_time when CONFIG_PPC_SPLPAR is not selected
Date
If CONFIG_PPC_SPLPAR is not selected, steal_time will always
be NUL, so accounting it is pointless

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
v4: removed the check in vtime_account_system(), the compiler removes the code regardless.
v3: new

arch/powerpc/kernel/time.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 7a9f4e2f22c8..eda78b1ed7d3 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -412,9 +412,6 @@ void vtime_flush(struct task_struct *tsk)
if (acct->gtime)
account_guest_time(tsk, cputime_to_nsecs(acct->gtime));

- if (acct->steal_time)
- account_steal_time(cputime_to_nsecs(acct->steal_time));
-
if (acct->idle_time)
account_idle_time(cputime_to_nsecs(acct->idle_time));

@@ -431,13 +428,17 @@ void vtime_flush(struct task_struct *tsk)

acct->utime = 0;
acct->gtime = 0;
- acct->steal_time = 0;
acct->idle_time = 0;
acct->stime = 0;
acct->hardirq_time = 0;
acct->softirq_time = 0;

vtime_flush_scaled(tsk, acct);
+
+ if (IS_ENABLED(CONFIG_PPC_SPLPAR) && acct->steal_time) {
+ account_steal_time(cputime_to_nsecs(acct->steal_time));
+ acct->steal_time = 0;
+ }
}

#else /* ! CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
--
2.13.3
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