diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/power/pm_qos_interface.txt | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/Documentation/power/pm_qos_interface.txt b/Documentation/power/pm_qos_interface.txt index 49adb1a33514..c40866e8b957 100644 --- a/Documentation/power/pm_qos_interface.txt +++ b/Documentation/power/pm_qos_interface.txt | |||
| @@ -1,4 +1,4 @@ | |||
| 1 | PM quality of Service interface. | 1 | PM Quality Of Service Interface. |
| 2 | 2 | ||
| 3 | This interface provides a kernel and user mode interface for registering | 3 | This interface provides a kernel and user mode interface for registering |
| 4 | performance expectations by drivers, subsystems and user space applications on | 4 | performance expectations by drivers, subsystems and user space applications on |
| @@ -7,6 +7,11 @@ one of the parameters. | |||
| 7 | Currently we have {cpu_dma_latency, network_latency, network_throughput} as the | 7 | Currently we have {cpu_dma_latency, network_latency, network_throughput} as the |
| 8 | initial set of pm_qos parameters. | 8 | initial set of pm_qos parameters. |
| 9 | 9 | ||
| 10 | Each parameters have defined units: | ||
| 11 | * latency: usec | ||
| 12 | * timeout: usec | ||
| 13 | * throughput: kbs (kilo bit / sec) | ||
| 14 | |||
| 10 | The infrastructure exposes multiple misc device nodes one per implemented | 15 | The infrastructure exposes multiple misc device nodes one per implemented |
| 11 | parameter. The set of parameters implement is defined by pm_qos_power_init() | 16 | parameter. The set of parameters implement is defined by pm_qos_power_init() |
| 12 | and pm_qos_params.h. This is done because having the available parameters | 17 | and pm_qos_params.h. This is done because having the available parameters |