diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-09-01 10:34:35 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-09-04 10:09:54 +0200 |
| commit | a52bfd73589eaf88d9c95ad2c1de0b38a6b27972 (patch) | |
| tree | 33cee609a46624525abf1643d71d0fbc79e25f87 /include/linux | |
| parent | cc9fba7d7672fa3ed58d9d9ecb6c45b1351c29a6 (diff) | |
sched: Add smt_gain
The idea is that multi-threading a core yields more work
capacity than a single thread, provide a way to express a
static gain for threads.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Tested-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Acked-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Acked-by: Gautham R Shenoy <ego@in.ibm.com>
Cc: Balbir Singh <balbir@in.ibm.com>
LKML-Reference: <20090901083826.073345955@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/sched.h | 1 | ||||
| -rw-r--r-- | include/linux/topology.h | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 651dded2572..9c81c921acb 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -921,6 +921,7 @@ struct sched_domain { unsigned int newidle_idx; unsigned int wake_idx; unsigned int forkexec_idx; + unsigned int smt_gain; int flags; /* See SD_* */ enum sched_domain_level level; diff --git a/include/linux/topology.h b/include/linux/topology.h index 7402c1a27c4..6203ae5067c 100644 --- a/include/linux/topology.h +++ b/include/linux/topology.h @@ -99,6 +99,7 @@ int arch_update_cpu_topology(void); | SD_SHARE_CPUPOWER, \ .last_balance = jiffies, \ .balance_interval = 1, \ + .smt_gain = 1178, /* 15% */ \ } #endif #endif /* CONFIG_SCHED_SMT */ |