malloc: fix allocation of almost hugepage size

[dpdk.git] / doc / guides / prog_guide / power_man.rst

diff --git a/doc/guides/prog_guide/power_man.rst b/doc/guides/prog_guide/power_man.rst
index 0e66878..98cfd3c 100644 (file)
--- a/doc/guides/prog_guide/power_man.rst
+++ b/doc/guides/prog_guide/power_man.rst
@@ -217,21 +217,28 @@ power saving whenever empty poll count reaches a certain number.
 * Frequency scaling
    This power saving scheme will use ``librte_power`` library functionality to
    scale the core frequency up/down depending on traffic volume.
+   The reaction time of the frequency scaling mode is longer
+   than the pause and monitor mode.
 
 The "monitor" mode is only supported in the following configurations and scenarios:
 
 * On Linux* x86_64, `rte_power_monitor()` requires WAITPKG instruction set being
-  supported by the CPU. Please refer to your platform documentation for further
-  information.
+  supported by the CPU, while `rte_power_monitor_multi()` requires WAITPKG and
+  RTM instruction sets being supported by the CPU. RTM instruction set may also
+  require booting the Linux with `tsx=on` command line parameter. Please refer
+  to your platform documentation for further information.
 
 * If ``rte_cpu_get_intrinsics_support()`` function indicates that
+  ``rte_power_monitor_multi()`` function is supported by the platform, then
+  monitoring multiple Ethernet Rx queues for traffic will be supported.
+
+* If ``rte_cpu_get_intrinsics_support()`` function indicates that only
   ``rte_power_monitor()`` is supported by the platform, then monitoring will be
   limited to a mapping of 1 core 1 queue (thus, each Rx queue will have to be
   monitored from a different lcore).
 
-* If ``rte_cpu_get_intrinsics_support()`` function indicates that the
-  ``rte_power_monitor()`` function is not supported, then monitor mode will not
-  be supported.
+* If ``rte_cpu_get_intrinsics_support()`` function indicates that neither of the
+  two monitoring functions are supported, then monitor mode will not be supported.
 
 * Not all Ethernet drivers support monitoring, even if the underlying
   platform may support the necessary CPU instructions. Please refer to
@@ -245,6 +252,30 @@ API Overview for Ethernet PMD Power Management
 
 * **Queue Disable**: Disable power scheme for certain queue/port/core.
 
+* **Get Emptypoll Max**: Get the configured number of empty polls to wait before
+  entering sleep state.
+
+* **Set Emptypoll Max**: Set the number of empty polls to wait before entering
+  sleep state.
+
+* **Get Pause Duration**: Get the configured duration (microseconds) to be used
+  in the Pause callback.
+
+* **Set Pause Duration**: Set the duration of the pause (microseconds) used in
+  the Pause mode callback.
+
+* **Get Scaling Min Freq**: Get the configured minimum frequency (kHz) to be used
+  in Frequency Scaling mode.
+
+* **Set Scaling Min Freq**: Set the minimum frequency (kHz) to be used in Frequency
+  Scaling mode.
+
+* **Get Scaling Max Freq**: Get the configured maximum frequency (kHz) to be used
+  in Frequency Scaling mode.
+
+* **Set Scaling Max Freq**: Set the maximum frequency (kHz) to be used in Frequency
+  Scaling mode.
+
 References
 ----------