diff options
| author | Jason Low | 2013-09-13 11:26:53 -0700 |
|---|---|---|
| committer | Ingo Molnar | 2013-09-20 12:03:46 +0200 |
| commit | f48627e686a69f5215cb0761e731edb3d9859dd9 (patch) | |
| tree | 510f55a0971da16bdb2922da2c0ebad47bdc5e3d /include | |
| parent | 9bd721c55c8a886b938a45198aab0ccb52f1f7fa (diff) | |
sched/balancing: Periodically decay max cost of idle balance
This patch builds on patch 2 and periodically decays that max value to
do idle balancing per sched domain by approximately 1% per second. Also
decay the rq's max_idle_balance_cost value.
Signed-off-by: Jason Low <jason.low2@hp.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1379096813-3032-4-git-send-email-jason.low2@hp.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/sched.h | 3 | ||||
| -rw-r--r-- | include/linux/topology.h | 3 |
2 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index be078ff9157f..b5344de1658b 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -810,7 +810,10 @@ struct sched_domain { unsigned int nr_balance_failed; /* initialise to 0 */ u64 last_update; + + /* idle_balance() stats */ u64 max_newidle_lb_cost; + unsigned long next_decay_max_lb_cost; #ifdef CONFIG_SCHEDSTATS /* load_balance() stats */ diff --git a/include/linux/topology.h b/include/linux/topology.h index e2a2c3da2929..12ae6ce997d6 100644 --- a/include/linux/topology.h +++ b/include/linux/topology.h @@ -107,6 +107,7 @@ int arch_update_cpu_topology(void); .balance_interval = 1, \ .smt_gain = 1178, /* 15% */ \ .max_newidle_lb_cost = 0, \ + .next_decay_max_lb_cost = jiffies, \ } #endif #endif /* CONFIG_SCHED_SMT */ @@ -137,6 +138,7 @@ int arch_update_cpu_topology(void); .last_balance = jiffies, \ .balance_interval = 1, \ .max_newidle_lb_cost = 0, \ + .next_decay_max_lb_cost = jiffies, \ } #endif #endif /* CONFIG_SCHED_MC */ @@ -169,6 +171,7 @@ int arch_update_cpu_topology(void); .last_balance = jiffies, \ .balance_interval = 1, \ .max_newidle_lb_cost = 0, \ + .next_decay_max_lb_cost = jiffies, \ } #endif |