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AMD Pstate Driver Core Performance Boost
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Hi all, The patchset series implement CPB(core performance boost) feature for AMD pstate driver including passisve ,guide and active mode support. User can change global core frequency boost control with a new sysfs entry: "/sys/devices/system/cpu/amd_pstate/cpb_boost" Now it also support to update indivial CPU boost state in sysfs boost file. "/sys/devices/system/cpu/cpuX/cpufreq/boost" And global control will override the indivial CPU boost state by default. 1) globally disable core boost: $ sudo bash -c "echo 0 > /sys/devices/system/cpu/amd_pstate/cpb_boost" $ lscpu -ae CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE MAXMHZ MINMHZ MHZ 0 0 0 0 0:0:0:0 yes 4201.0000 400.0000 2983.578 1 0 0 1 1:1:1:0 yes 4201.0000 400.0000 2983.578 2 0 0 2 2:2:2:0 yes 4201.0000 400.0000 2583.855 3 0 0 3 3:3:3:0 yes 4201.0000 400.0000 2983.578 4 0 0 4 4:4:4:0 yes 4201.0000 400.0000 2983.578 2) globally enable core boost: $ sudo bash -c "echo 1 > /sys/devices/system/cpu/amd_pstate/cpb_boost" $ lscpu -ae 0 0 0 0 0:0:0:0 yes 5759.0000 400.0000 2983.578 1 0 0 1 1:1:1:0 yes 5759.0000 400.0000 2983.578 2 0 0 2 2:2:2:0 yes 5759.0000 400.0000 2983.578 3 0 0 3 3:3:3:0 yes 5759.0000 400.0000 2983.578 4 0 0 4 4:4:4:0 yes 5759.0000 400.0000 2983.578 ============================================================================ The V9 patches add per CPU boost control, user can enable/disable CPUs boost as the below command tested on a laptop system. # before CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE MAXMHZ MINMHZ MHZ 0 0 0 0 0:0:0:0 yes 4208.0000 400.0000 1666.7740 1 0 0 0 0:0:0:0 yes 4208.0000 400.0000 400.0000 2 0 0 1 1:1:1:0 yes 4208.0000 400.0000 3386.1260 3 0 0 1 1:1:1:0 yes 4208.0000 400.0000 400.0000 $ sudo rdmsr 0xc00102b3 -p 0 10a6 $ sudo bash -c "echo 1 > /sys/devices/system/cpu/cpu0/cpufreq/boost" # after CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE MAXMHZ MINMHZ MHZ 0 0 0 0 0:0:0:0 yes 3501.0000 400.0000 400.0000 1 0 0 0 0:0:0:0 yes 4208.0000 400.0000 1391.0690 2 0 0 1 1:1:1:0 yes 4208.0000 400.0000 3654.4541 3 0 0 1 1:1:1:0 yes 4208.0000 400.0000 400.0000 $ sudo rdmsr 0xc00102b3 -p 0 108a rebasd to keep syncing to Mario kernel tree: bleeding-edge https://git.kernel.org/pub/scm/linux/kernel/git/superm1/linux.git Tested result: CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE MAXMHZ MINMHZ MHZ 0 0 0 0 0:0:0:0 yes 4354.0000 400.0000 1110.7140 1 0 0 0 0:0:0:0 yes 4354.0000 400.0000 1110.7140 2 0 0 1 1:1:1:0 yes 4354.0000 400.0000 1110.7140 3 0 0 1 1:1:1:0 yes 4354.0000 400.0000 3110.0000 4 0 0 2 2:2:2:0 yes 4354.0000 400.0000 2732.3569 5 0 0 2 2:2:2:0 yes 4354.0000 400.0000 1110.7140 6 0 0 3 3:3:3:0 yes 4354.0000 400.0000 1110.7140 7 0 0 3 3:3:3:0 yes 4354.0000 400.0000 1110.7140 8 0 0 4 4:4:4:0 yes 4354.0000 400.0000 2312.2109 9 0 0 4 4:4:4:0 yes 4354.0000 400.0000 1110.7140 10 0 0 5 5:5:5:0 yes 4354.0000 400.0000 2310.1011 11 0 0 5 5:5:5:0 yes 4354.0000 400.0000 1110.7140 sudo bash -c "echo 0 > /sys/devices/system/cpu/cpu11/cpufreq/boost" sudo bash -c "echo 0 > /sys/devices/system/cpu/cpu10/cpufreq/boost" sudo bash -c "echo 0 > /sys/devices/system/cpu/cpu9/cpufreq/boost" CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE MAXMHZ MINMHZ MHZ 0 0 0 0 0:0:0:0 yes 4354.0000 400.0000 1242.7240 1 0 0 0 0:0:0:0 yes 4354.0000 400.0000 1110.7140 2 0 0 1 1:1:1:0 yes 4354.0000 400.0000 2754.5710 3 0 0 1 1:1:1:0 yes 4354.0000 400.0000 2659.8159 4 0 0 2 2:2:2:0 yes 4354.0000 400.0000 2308.9929 5 0 0 2 2:2:2:0 yes 4354.0000 400.0000 1110.7140 6 0 0 3 3:3:3:0 yes 4354.0000 400.0000 1110.7140 7 0 0 3 3:3:3:0 yes 4354.0000 400.0000 1110.7140 8 0 0 4 4:4:4:0 yes 4354.0000 400.0000 1110.7140 9 0 0 4 4:4:4:0 yes 2801.0000 400.0000 1110.7140 10 0 0 5 5:5:5:0 yes 2801.0000 400.0000 1110.7140 11 0 0 5 5:5:5:0 yes 2801.0000 400.0000 1110.7140 sudo bash -c "echo 0 > /sys/devices/system/cpu/amd_pstate/cpb_boost" CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE MAXMHZ MINMHZ MHZ 0 0 0 0 0:0:0:0 yes 2801.0000 400.0000 1233.8630 1 0 0 0 0:0:0:0 yes 2801.0000 400.0000 1110.7140 2 0 0 1 1:1:1:0 yes 2801.0000 400.0000 2714.4851 3 0 0 1 1:1:1:0 yes 2801.0000 400.0000 2732.3569 4 0 0 2 2:2:2:0 yes 2801.0000 400.0000 2564.2639 5 0 0 2 2:2:2:0 yes 2801.0000 400.0000 1110.7140 6 0 0 3 3:3:3:0 yes 2801.0000 400.0000 2732.3569 7 0 0 3 3:3:3:0 yes 2801.0000 400.0000 1110.7140 8 0 0 4 4:4:4:0 yes 2801.0000 400.0000 1233.8660 9 0 0 4 4:4:4:0 yes 2801.0000 400.0000 1110.7140 10 0 0 5 5:5:5:0 yes 2801.0000 400.0000 1233.6630 11 0 0 5 5:5:5:0 yes 2801.0000 400.0000 1233.5050 sudo bash -c "echo 1 > /sys/devices/system/cpu/amd_pstate/cpb_boost" CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE MAXMHZ MINMHZ MHZ 0 0 0 0 0:0:0:0 yes 4354.0000 400.0000 1234.0200 1 0 0 0 0:0:0:0 yes 4354.0000 400.0000 1110.7140 2 0 0 1 1:1:1:0 yes 4354.0000 400.0000 1110.7140 3 0 0 1 1:1:1:0 yes 4354.0000 400.0000 1110.7140 4 0 0 2 2:2:2:0 yes 4354.0000 400.0000 1110.7140 5 0 0 2 2:2:2:0 yes 4354.0000 400.0000 1110.7140 6 0 0 3 3:3:3:0 yes 4354.0000 400.0000 2278.8491 7 0 0 3 3:3:3:0 yes 4354.0000 400.0000 2732.3569 8 0 0 4 4:4:4:0 yes 4354.0000 400.0000 1110.7140 9 0 0 4 4:4:4:0 yes 4354.0000 400.0000 1110.7140 10 0 0 5 5:5:5:0 yes 4354.0000 400.0000 2353.0449 11 0 0 5 5:5:5:0 yes 4354.0000 400.0000 1110.7140 Perry. Changes from v10: * rework the boost interface with cpufreq core boost control, align the sysfs file created from cpufreq.c and allow indivial CPU boost control (Mario) * fix the pr_warn code format with %zd (Oleksandr Natalenko) * replace sscanf with kstrtobool for cpufreq.c (new) * drop the boost sysfs file creation from amd pstate patch #6 * add init_boost for cpufreq.c to unify the boost file creation(Mario) * add set_boost callback for EPP driver mode * fix syncronization issue for indivial boost control and global CPB control, now the two control way will keep syncronization after anyone CPU boost state changed. * rebased to Mario kernel tree: bleeding-edge * run testing on local system, no regression issue found so far. Changes from v9: * change per CPU boost sysfs file name to `boost` (Mario) * rebased to latest linux-pm/bleeding-edge Changes from v8: * pick RB flag for patch 4 (Mario) * change boot_cpu_has to cpu_feature_enabled for patch 2 (Boris) * merge patch 6 into patch 3 (Mario) * add two patch for per CPU boost control patch 6 & 7(Mario) * rebased to latest linux-pm/bleeding-edge Changes from v7: * fix the mutext locking issue in the sysfs file update(Ray, Mario) * pick ack flag from Ray * use X86_FEATURE_CPB to verify the CPB function in Patch #2(Ray) * rerun the testing to check function works well * rebased to linux-pm/bleeding-edge latest Changes from v6: * reword patch 2 commit log (Gautham) * update cover letter description(Gautham) * rebase to kernel v6.9-rc5 Changes from v4: * drop the legacy boost remove patch, let us keep the legacy interface in case some applications break. * rebase to linux-pm/bleeding-edge branch * rework the patchset base on [PATCH v8 0/8] AMD Pstate Fixes And Enhancements which has some intial work done there. Changes from v4: * move MSR_K7_HWCR_CPB_DIS_BIT into msr-index.h * pick RB flag from Gautham R. Shenoy * add Cc Oleksandr Natalenko <oleksandr@natalenko.name> * rebase to latest linux-pm/bleeding-edge branch * rebase the patch set on top of [PATCH v7 0/6] AMD Pstate Fixes And Enhancements * update [PATCH v7 2/6] to use MSR_K7_HWCR_CPB_DIS_BIT Changes from v3: * rebased to linux-pm/bleeding-edge v6.8 * rename global to amd_pstate_global_params(Oleksandr Natalenko) * remove comments for boot_supported in amd_pstate.h * fix the compiler warning for amd-pstate-ut.ko * use for_each_online_cpu in cpb_boost_store which fix the null pointer error during testing * fix the max frequency value to be KHz when cpb boost disabled(Gautham R. Shenoy) Changes from v2: * move global struct to amd-pstate.h * fix the amd-pstate-ut with new cpb control interface Changes from v1: * drop suspend/resume fix patch 6/7 because of the fix should be in another fix series instead of CPB feature * move the set_boost remove patch to the last(Mario) * Fix commit info with "Closes:" (Mario) * simplified global.cpb_supported initialization(Mario) * Add guide mode support for CPB control * Fixed some Doc typos and add guide mode info to Doc as well. v1: https://lore.kernel.org/all/cover.1706255676.git.perry.yuan@amd.com/ v2: https://lore.kernel.org/lkml/cover.1707047943.git.perry.yuan@amd.com/ v3: https://lore.kernel.org/lkml/cover.1707297581.git.perry.yuan@amd.com/ v4: https://lore.kernel.org/lkml/cover.1710322310.git.perry.yuan@amd.com/ v5: https://lore.kernel.org/lkml/cover.1710473712.git.perry.yuan@amd.com/ v6: https://lore.kernel.org/lkml/cover.1710754236.git.perry.yuan@amd.com/ v7: https://lore.kernel.org/lkml/cover.1713861200.git.perry.yuan@amd.com/ v8: https://lore.kernel.org/lkml/cover.1714112854.git.perry.yuan@amd.com/ v9: https://lore.kernel.org/lkml/cover.1714989803.git.perry.yuan@amd.com/ v10: https://lore.kernel.org/lkml/cover.1715152592.git.perry.yuan@amd.com/ Perry Yuan (9): cpufreq: acpi: move MSR_K7_HWCR_CPB_DIS_BIT into msr-index.h cpufreq: simplify boolean parsing with kstrtobool in store function cpufreq: introduce init_boost callback to initialize boost state for pstate drivers cpufreq: amd-pstate: initialize new core precision boost state cpufreq: amd-pstate: implement cpb_boost sysfs entry for boost control cpufreq: amd-pstate: Add set_boost callback for active mode cpufreq: amd-pstate: fix the MSR highest perf will be reset issue while cpb boost off Documentation: cpufreq: amd-pstate: introduce the new cpu boost control method Documentation: cpufreq: amd-pstate: update doc for Per CPU boost control method Documentation/admin-guide/pm/amd-pstate.rst | 30 +++ arch/x86/include/asm/msr-index.h | 2 + drivers/cpufreq/acpi-cpufreq.c | 2 - drivers/cpufreq/amd-pstate-ut.c | 2 +- drivers/cpufreq/amd-pstate.c | 197 +++++++++++++++++--- drivers/cpufreq/amd-pstate.h | 14 ++ drivers/cpufreq/cpufreq.c | 23 ++- include/linux/cpufreq.h | 2 + 8 files changed, 237 insertions(+), 35 deletions(-)