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-rw-r--r--kernel/sched/cputime.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c
index c91fd67f93ea..335d2c127763 100644
--- a/kernel/sched/cputime.c
+++ b/kernel/sched/cputime.c
@@ -522,6 +522,13 @@ u64 kcpustat_field_iowait(int cpu)
nr_iowait_cpu(cpu), ktime_get());
}
EXPORT_SYMBOL_GPL(kcpustat_field_iowait);
+#else
+static u64 kcpustat_field_dyntick(int cpu, enum cpu_usage_stat idx,
+ bool compute_delta, ktime_t now)
+{
+ return kcpustat_cpu(cpu).cpustat[idx];
+}
+#endif /* CONFIG_NO_HZ_COMMON */
static u64 get_cpu_sleep_time_us(int cpu, enum cpu_usage_stat idx,
bool compute_delta, u64 *last_update_time)
@@ -557,7 +564,7 @@ static u64 get_cpu_sleep_time_us(int cpu, enum cpu_usage_stat idx,
* This time is measured via accounting rather than sampling,
* and is as accurate as ktime_get() is.
*
- * Return: -1 if generic vtime is enabled, else total idle time of the @cpu
+ * Return: total idle time of the @cpu
*/
u64 get_cpu_idle_time_us(int cpu, u64 *last_update_time)
{
@@ -581,7 +588,7 @@ EXPORT_SYMBOL_GPL(get_cpu_idle_time_us);
* This time is measured via accounting rather than sampling,
* and is as accurate as ktime_get() is.
*
- * Return: -1 if generic vtime is enabled, else total iowait time of @cpu
+ * Return: total iowait time of @cpu
*/
u64 get_cpu_iowait_time_us(int cpu, u64 *last_update_time)
{
@@ -589,7 +596,6 @@ u64 get_cpu_iowait_time_us(int cpu, u64 *last_update_time)
nr_iowait_cpu(cpu), last_update_time);
}
EXPORT_SYMBOL_GPL(get_cpu_iowait_time_us);
-#endif /* CONFIG_NO_HZ_COMMON */
/*
* Use precise platform statistics if available: