diff options
| author | Tomeu Vizoso <tomeu.vizoso@collabora.com> | 2014-09-03 17:49:32 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-09-25 01:18:33 +0200 |
| commit | 7990da71ebfa887ae6fe4464ab0d99ddeb8efacc (patch) | |
| tree | 26f0b2b19119485b309fa35121872cd7bac0a62e /include | |
| parent | Linux 3.17-rc6 (diff) | |
| download | linux-7990da71ebfa887ae6fe4464ab0d99ddeb8efacc.tar.xz linux-7990da71ebfa887ae6fe4464ab0d99ddeb8efacc.zip | |
PM / QoS: Add PM_QOS_MEMORY_BANDWIDTH class
Also adds a class type PM_QOS_SUM that aggregates the values by summing them.
It can be used by memory controllers to calculate the optimum clock frequency
based on the bandwidth needs of the different memory clients.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/pm_qos.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index 9ab4bf7c4646..636e82834506 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -15,6 +15,7 @@ enum { PM_QOS_CPU_DMA_LATENCY, PM_QOS_NETWORK_LATENCY, PM_QOS_NETWORK_THROUGHPUT, + PM_QOS_MEMORY_BANDWIDTH, /* insert new class ID */ PM_QOS_NUM_CLASSES, @@ -32,6 +33,7 @@ enum pm_qos_flags_status { #define PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC) #define PM_QOS_NETWORK_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC) #define PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE 0 +#define PM_QOS_MEMORY_BANDWIDTH_DEFAULT_VALUE 0 #define PM_QOS_RESUME_LATENCY_DEFAULT_VALUE 0 #define PM_QOS_LATENCY_TOLERANCE_DEFAULT_VALUE 0 #define PM_QOS_LATENCY_TOLERANCE_NO_CONSTRAINT (-1) @@ -69,7 +71,8 @@ struct dev_pm_qos_request { enum pm_qos_type { PM_QOS_UNITIALIZED, PM_QOS_MAX, /* return the largest value */ - PM_QOS_MIN /* return the smallest value */ + PM_QOS_MIN, /* return the smallest value */ + PM_QOS_SUM /* return the sum */ }; /* |