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authorAmit Kucheria <amit.kucheria@linaro.org>2019-07-11 17:21:25 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-08-21 01:38:54 +0300
commitc3082a674f46fe49383b157882c41dfabaa37113 (patch)
tree578b8d8283b55b4368de4d5f47842a3c257e90e3 /Documentation/power
parentd1abaeb3be7b5fa6d7a1fbbd2e14e3310005c4c1 (diff)
downloadlinux-c3082a674f46fe49383b157882c41dfabaa37113.tar.xz
PM: QoS: Get rid of unused flags
The network_latency and network_throughput flags for PM-QoS have not found much use in drivers or in userspace since they were introduced. Commit 4a733ef1bea7 ("mac80211: remove PM-QoS listener") removed the only user PM_QOS_NETWORK_LATENCY in the kernel a while ago and there don't seem to be any userspace tools using the character device files either. PM_QOS_MEMORY_BANDWIDTH was never even added to the trace events. Remove all the flags except cpu_dma_latency. Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'Documentation/power')
-rw-r--r--Documentation/power/pm_qos_interface.rst5
1 files changed, 2 insertions, 3 deletions
diff --git a/Documentation/power/pm_qos_interface.rst b/Documentation/power/pm_qos_interface.rst
index 69921f072ce1..3097694fba69 100644
--- a/Documentation/power/pm_qos_interface.rst
+++ b/Documentation/power/pm_qos_interface.rst
@@ -7,8 +7,7 @@ performance expectations by drivers, subsystems and user space applications on
one of the parameters.
Two different PM QoS frameworks are available:
-1. PM QoS classes for cpu_dma_latency, network_latency, network_throughput,
-memory_bandwidth.
+1. PM QoS classes for cpu_dma_latency
2. the per-device PM QoS framework provides the API to manage the per-device latency
constraints and PM QoS flags.
@@ -79,7 +78,7 @@ cleanup of a process, the interface requires the process to register its
parameter requests in the following way:
To register the default pm_qos target for the specific parameter, the process
-must open one of /dev/[cpu_dma_latency, network_latency, network_throughput]
+must open /dev/cpu_dma_latency
As long as the device node is held open that process has a registered
request on the parameter.