diff options
| author | Ruchi Kandoi <kandoiruchi@google.com> | 2015-04-17 16:33:29 -0700 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2016-09-10 16:03:52 +0200 |
| commit | d568ebc24c10a87c465ada70d0009c2f707ef121 (patch) | |
| tree | efc4f6da8217325c5771436735ae189e7d635c6c /kernel/sched | |
| parent | bbc4c63b8fa5bb5d5e855a65714d9f57a02ac737 (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.
Bug: 21498425
Change-Id: Ic535941e7b339aab5cae9081a34049daeb44b248
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/cputime.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index c23a8fd36..ee65c82af 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -1,3 +1,4 @@ +#include <linux/cpufreq.h> #include <linux/export.h> #include <linux/sched.h> #include <linux/tsacct_kern.h> @@ -149,6 +150,9 @@ void account_user_time(struct task_struct *p, cputime_t cputime, /* Account for user time used */ acct_account_cputime(p); + + /* Account power usage for user time */ + acct_update_power(p, cputime); } /* @@ -199,6 +203,9 @@ void __account_system_time(struct task_struct *p, cputime_t cputime, /* Account for system time used */ acct_account_cputime(p); + + /* Account power usage for system time */ + acct_update_power(p, cputime); } /* |