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authorRuchi Kandoi <kandoiruchi@google.com>2015-04-17 16:33:29 -0700
committerRuchi Kandoi <kandoiruchi@google.com>2015-06-02 11:14:50 -0700
commite91d3fbfa83b2ab32ffef6fdfd9a244c20e27ffa (patch)
treeb142868583b61d1ccf61a398ca33220435d44ac5 /include
parent0866f4e30c337714f86bff4638e418ad8c60b11c (diff)
sched: cpufreq: Adds a field cpu_power in the task_struct
cpu_power has been added to keep track of amount of power each task is consuming. cpu_power is updated whenever stime and utime are updated for a task. power is computed by taking into account the frequency at which the current core was running and the current for cpu actively running at hat frequency. Change-Id: Ic535941e7b339aab5cae9081a34049daeb44b248 Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/cpufreq.h8
-rw-r--r--include/linux/sched.h1
2 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index b0d360c87602..a15944d5a06f 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -17,6 +17,8 @@
#include <linux/kobject.h>
#include <linux/notifier.h>
#include <linux/sysfs.h>
+#include <asm/cputime.h>
+
/*********************************************************************
* CPUFREQ INTERFACE *
@@ -509,4 +511,10 @@ static inline int cpufreq_generic_exit(struct cpufreq_policy *policy)
return 0;
}
+/*********************************************************************
+ * CPUFREQ STATS *
+ *********************************************************************/
+
+void acct_update_power(struct task_struct *p, cputime_t cputime);
+
#endif /* _LINUX_CPUFREQ_H */
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 37658d063909..6aef9c64c73d 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1290,6 +1290,7 @@ struct task_struct {
cputime_t utime, stime, utimescaled, stimescaled;
cputime_t gtime;
+ unsigned long long cpu_power;
#ifndef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
struct cputime prev_cputime;
#endif