diff options
Diffstat (limited to 'Documentation')
5 files changed, 32 insertions, 20 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index a465d5242774..42af9ca0127e 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -6959,3 +6959,14 @@ memory, and other data can't be written using xmon commands. off xmon is disabled. + + amd_pstate= [X86] + disable + Do not enable amd_pstate as the default + scaling driver for the supported processors + passive + Use amd_pstate as a scaling driver, driver requests a + desired performance on this abstract scale and the power + management firmware translates the requests into actual + hardware states (core frequency, data fabric and memory + clocks etc.) diff --git a/Documentation/admin-guide/pm/amd-pstate.rst b/Documentation/admin-guide/pm/amd-pstate.rst index 8f3d30c5a0d8..06e23538f79c 100644 --- a/Documentation/admin-guide/pm/amd-pstate.rst +++ b/Documentation/admin-guide/pm/amd-pstate.rst @@ -283,23 +283,19 @@ efficiency frequency management method on AMD processors. Kernel Module Options for ``amd-pstate`` ========================================= -.. _shared_mem: - -``shared_mem`` -Use a module param (shared_mem) to enable related processors manually with -**amd_pstate.shared_mem=1**. -Due to the performance issue on the processors with `Shared Memory Support -<perf_cap_>`_, we disable it presently and will re-enable this by default -once we address performance issue with this solution. - -To check whether the current processor is using `Full MSR Support <perf_cap_>`_ -or `Shared Memory Support <perf_cap_>`_ : :: - - ray@hr-test1:~$ lscpu | grep cppc - Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf rapl pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 hw_pstate ssbd mba ibrs ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr rdpru wbnoinvd cppc arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif v_spec_ctrl umip pku ospke vaes vpclmulqdq rdpid overflow_recov succor smca fsrm - -If the CPU flags have ``cppc``, then this processor supports `Full MSR Support -<perf_cap_>`_. Otherwise, it supports `Shared Memory Support <perf_cap_>`_. +Passive Mode +------------ + +``amd_pstate=passive`` + +It will be enabled if the ``amd_pstate=passive`` is passed to the kernel in the command line. +In this mode, ``amd_pstate`` driver software specifies a desired QoS target in the CPPC +performance scale as a relative number. This can be expressed as percentage of nominal +performance (infrastructure max). Below the nominal sustained performance level, +desired performance expresses the average performance level of the processor subject +to the Performance Reduction Tolerance register. Above the nominal performance level, +processor must provide at least nominal performance requested and go higher if current +operating conditions allow. ``cpupower`` tool support for ``amd-pstate`` diff --git a/Documentation/devicetree/bindings/media/allwinner,sun50i-h6-vpu-g2.yaml b/Documentation/devicetree/bindings/media/allwinner,sun50i-h6-vpu-g2.yaml index 24d7bf21499e..9d44236f2deb 100644 --- a/Documentation/devicetree/bindings/media/allwinner,sun50i-h6-vpu-g2.yaml +++ b/Documentation/devicetree/bindings/media/allwinner,sun50i-h6-vpu-g2.yaml @@ -36,6 +36,9 @@ properties: resets: maxItems: 1 + iommus: + maxItems: 1 + required: - compatible - reg @@ -43,6 +46,7 @@ required: - clocks - clock-names - resets + - iommus additionalProperties: false @@ -59,6 +63,7 @@ examples: clocks = <&ccu CLK_BUS_VP9>, <&ccu CLK_VP9>; clock-names = "bus", "mod"; resets = <&ccu RST_BUS_VP9>; + iommus = <&iommu 5>; }; ... diff --git a/Documentation/networking/generic_netlink.rst b/Documentation/networking/generic_netlink.rst index 59e04ccf80c1..d960dbd7e80e 100644 --- a/Documentation/networking/generic_netlink.rst +++ b/Documentation/networking/generic_netlink.rst @@ -6,4 +6,4 @@ Generic Netlink A wiki document on how to use Generic Netlink can be found here: - * http://www.linuxfoundation.org/collaborate/workgroups/networking/generic_netlink_howto + * https://wiki.linuxfoundation.org/networking/generic_netlink_howto diff --git a/Documentation/translations/zh_CN/loongarch/introduction.rst b/Documentation/translations/zh_CN/loongarch/introduction.rst index 128878f5bb70..f3ec25b163d7 100644 --- a/Documentation/translations/zh_CN/loongarch/introduction.rst +++ b/Documentation/translations/zh_CN/loongarch/introduction.rst @@ -70,8 +70,8 @@ LA64中每个寄存器为64位宽。 ``$r0`` 的内容总是固定为0，而其 ================= ================== =================== ========== .. note:: - 注意：在一些遗留代码中有时可能见到 ``$v0`` 和 ``$v1`` ，它们是 - ``$a0`` 和 ``$a1`` 的别名，属于已经废弃的用法。 + 注意：在一些遗留代码中有时可能见到 ``$fv0`` 和 ``$fv1`` ，它们是 + ``$fa0`` 和 ``$fa1`` 的别名，属于已经废弃的用法。 向量寄存器 |