| Message ID | 20230131052141.96475-1-wyes.karny@amd.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | amd_pstate: Add guided autonomous mode support | expand |
> Wyes Karny <wyes.karny@amd.com> hat am 31.01.2023 05:21 GMT geschrieben: > > > From ACPI spec[1] below 3 modes for CPPC can be defined: > 1. Non autonomous: OS scaling governor specifies operating frequency/ > performance level through `Desired Performance` register and platform > follows that. > 2. Guided autonomous: OS scaling governor specifies min and max > frequencies/ performance levels through `Minimum Performance` and > `Maximum Performance` register, and platform can autonomously select an > operating frequency in this range. > 3. Fully autonomous: OS only hints (via EPP) to platform for the required > energy performance preference for the workload and platform autonomously > scales the frequency. > > Currently (1) is supported by amd_pstate as passive mode, and (3) is > implemented by EPP support[2]. This change is to support (2). > > In guided autonomous mode the min_perf is based on the input from the > scaling governor. For example, in case of schedutil this value depends > on the current utilization. And max_perf is set to max capacity. > > To activate guided auto mode ``amd_pstate=guided`` command line > parameter has to be passed in the kernel. > > Below are the results (normalized) of benchmarks with this patch: > System: Genoa 96C 192T > Kernel: 6.2.0-rc2 + EPP v11 + patch > Scaling governor: schedutil > > ================ dbench comparisons ================ > dbench result comparison: > Here results are throughput (MB/s) > Clients: acpi-cpufreq amd_pst+passive amd_pst+guided > 1 1.00 (0.00 pct) 1.01 (1.00 pct) 1.02 (2.00 pct) > 2 1.07 (0.00 pct) 1.06 (-0.93 pct) 1.07 (0.00 pct) > 4 1.68 (0.00 pct) 1.70 (1.19 pct) 1.72 (2.38 pct) > 8 2.61 (0.00 pct) 2.68 (2.68 pct) 2.76 (5.74 pct) > 16 4.16 (0.00 pct) 4.24 (1.92 pct) 4.53 (8.89 pct) > 32 5.98 (0.00 pct) 6.17 (3.17 pct) 7.30 (22.07 pct) > 64 8.67 (0.00 pct) 8.99 (3.69 pct) 10.71 (23.52 pct) > 128 11.98 (0.00 pct) 12.52 (4.50 pct) 14.67 (22.45 pct) > 256 15.73 (0.00 pct) 16.13 (2.54 pct) 17.81 (13.22 pct) > 512 15.77 (0.00 pct) 16.32 (3.48 pct) 16.39 (3.93 pct) > dbench power comparison: > Clients: acpi-cpufreq amd_pst+passive amd_pst+guided > 1 1.00 (0.00 pct) 1.00 (0.00 pct) 1.04 (4.00 pct) > 2 0.99 (0.00 pct) 0.97 (-2.02 pct) 1.02 (3.03 pct) > 4 0.98 (0.00 pct) 0.98 (0.00 pct) 1.02 (4.08 pct) > 8 0.98 (0.00 pct) 0.99 (1.02 pct) 1.02 (4.08 pct) > 16 0.99 (0.00 pct) 1.00 (1.01 pct) 1.04 (5.05 pct) > 32 1.02 (0.00 pct) 1.02 (0.00 pct) 1.07 (4.90 pct) > 64 1.05 (0.00 pct) 1.05 (0.00 pct) 1.11 (5.71 pct) > 128 1.08 (0.00 pct) 1.08 (0.00 pct) 1.15 (6.48 pct) > 256 1.12 (0.00 pct) 1.12 (0.00 pct) 1.20 (7.14 pct) > 512 1.18 (0.00 pct) 1.17 (-0.84 pct) 1.26 (6.77 pct) > > ================ git-source comparisons ================ > git-source result comparison: > Here results are throughput (compilations per 1000 sec) > Threads: acpi-cpufreq amd_pst+passive amd_pst+guided > 192 1.00 (0.00 pct) 0.93 (-7.00 pct) 1.00 (0.00 pct) > git-source power comparison: > Threads: acpi-cpufreq amd_pst+passive amd_pst+guided > 192 1.00 (0.00 pct) 1.00 (0.00 pct) 0.96 (-4.00 pct) > > ================ kernbench comparisons ================ > kernbench result comparison: > Here results are throughput (compilations per 1000 sec) > Load: acpi-cpufreq amd_pst+passive amd_pst+guided > 32 1.00 (0.00 pct) 1.01 (1.00 pct) 1.02 (2.00 pct) > 48 1.26 (0.00 pct) 1.28 (1.58 pct) 1.25 (-0.79 pct) > 64 1.39 (0.00 pct) 1.47 (5.75 pct) 1.43 (2.87 pct) > 96 1.48 (0.00 pct) 1.50 (1.35 pct) 1.49 (0.67 pct) > 128 1.29 (0.00 pct) 1.32 (2.32 pct) 1.33 (3.10 pct) > 192 1.17 (0.00 pct) 1.20 (2.56 pct) 1.21 (3.41 pct) > 256 1.17 (0.00 pct) 1.18 (0.85 pct) 1.20 (2.56 pct) > 384 1.16 (0.00 pct) 1.17 (0.86 pct) 1.21 (4.31 pct) > kernbench power comparison: > Clients: acpi-cpufreq amd_pst+passive amd_pst+guided > 32 1.00 (0.00 pct) 0.97 (-3.00 pct) 1.00 (0.00 pct) > 48 0.87 (0.00 pct) 0.81 (-6.89 pct) 0.88 (1.14 pct) > 64 0.81 (0.00 pct) 0.73 (-9.87 pct) 0.77 (-4.93 pct) > 96 0.75 (0.00 pct) 0.74 (-1.33 pct) 0.75 (0.00 pct) > 128 0.83 (0.00 pct) 0.79 (-4.81 pct) 0.83 (0.00 pct) > 192 0.92 (0.00 pct) 0.88 (-4.34 pct) 0.92 (0.00 pct) > 256 0.92 (0.00 pct) 0.88 (-4.34 pct) 0.92 (0.00 pct) > 384 0.92 (0.00 pct) 0.88 (-4.34 pct) 0.92 (0.00 pct) > > ================ tbench comparisons ================ > tbench result comparison: > Here results are throughput (MB/s) > Clients: acpi-cpufreq amd_pst+passive amd_pst+guided > 1 1.00 (0.00 pct) 0.70 (-30.00 pct) 1.37 (37.00 pct) > 2 2.64 (0.00 pct) 1.39 (-47.34 pct) 2.70 (2.27 pct) > 4 4.89 (0.00 pct) 2.75 (-43.76 pct) 5.28 (7.97 pct) > 8 9.46 (0.00 pct) 5.42 (-42.70 pct) 10.22 (8.03 pct) > 16 19.05 (0.00 pct) 10.42 (-45.30 pct) 19.94 (4.67 pct) > 32 37.50 (0.00 pct) 20.23 (-46.05 pct) 36.87 (-1.68 pct) > 64 61.24 (0.00 pct) 43.08 (-29.65 pct) 62.96 (2.80 pct) > 128 67.16 (0.00 pct) 69.08 (2.85 pct) 67.34 (0.26 pct) > 256 154.59 (0.00 pct) 162.33 (5.00 pct) 156.78 (1.41 pct) > 512 154.02 (0.00 pct) 156.74 (1.76 pct) 153.48 (-0.35 pct) > tbench power comparison: > Clients: acpi-cpufreq amd_pst+passive amd_pst+guided > 1 1.00 (0.00 pct) 0.97 (-3.00 pct) 1.08 (8.00 pct) > 2 1.04 (0.00 pct) 0.97 (-6.73 pct) 1.11 (6.73 pct) > 4 1.12 (0.00 pct) 0.99 (-11.60 pct) 1.18 (5.35 pct) > 8 1.25 (0.00 pct) 1.04 (-16.80 pct) 1.31 (4.80 pct) > 16 1.53 (0.00 pct) 1.13 (-26.14 pct) 1.58 (3.26 pct) > 32 2.01 (0.00 pct) 1.36 (-32.33 pct) 2.03 (0.99 pct) > 64 2.58 (0.00 pct) 2.14 (-17.05 pct) 2.61 (1.16 pct) > 128 2.80 (0.00 pct) 2.81 (0.35 pct) 2.81 (0.35 pct) > 256 3.39 (0.00 pct) 3.43 (1.17 pct) 3.42 (0.88 pct) > 512 3.44 (0.00 pct) 3.44 (0.00 pct) 3.44 (0.00 pct) > > Note: this series is based on top of EPP v11 [3] series Hi Wyes, Can you rebase this patchset onto the newest EPP v12 series [1] ? [1] https://lore.kernel.org/linux-pm/20230131090016.3970625-1-perry.yuan@amd.com/ Cheers, Tor Vic > > Change log: > > v3 -> v4: > - Fixed active mode low frequency issue reported by Peter Jung and Tor Vic > - Documentation modification suggested by Bagas Sanjaya > > v2 -> v3: > - Addressed review comments form Mario. > - Picked up RB tag from Mario. > - Rebase on top of EPP v11 [3]. > > v1 -> v2: > - Fix issue with shared mem systems. > - Rebase on top of EPP series. > > [1]: https://uefi.org/sites/default/files/resources/ACPI_6_3_final_Jan30.pdf > [2]: https://lore.kernel.org/lkml/20221110175847.3098728-1-Perry.Yuan@amd.com/ > [3]: https://lore.kernel.org/linux-pm/20230118075210.447418-1-perry.yuan@amd.com/ > > Wyes Karny (6): > acpi: cppc: Add min and max perf reg writing support > acpi: cppc: Add auto select register read/write support > cpufreq: amd_pstate: Add guided autonomous mode > Documentation: amd_pstate: Move amd_pstate param to alphabetical order > cpufreq: amd_pstate: Add guided mode control support via sysfs > Documentation: amd_pstate: Update amd_pstate status sysfs for guided > > .../admin-guide/kernel-parameters.txt | 41 ++-- > Documentation/admin-guide/pm/amd-pstate.rst | 31 ++- > drivers/acpi/cppc_acpi.c | 121 +++++++++++- > drivers/cpufreq/amd-pstate.c | 184 +++++++++++++----- > include/acpi/cppc_acpi.h | 11 ++ > include/linux/amd-pstate.h | 2 + > 6 files changed, 309 insertions(+), 81 deletions(-) > > -- > 2.34.1
Hello. On úterý 31. ledna 2023 11:37:51 CET torvic9@mailbox.org wrote: > Can you rebase this patchset onto the newest EPP v12 series [1] ? > > [1] https://lore.kernel.org/linux-pm/20230131090016.3970625-1-perry.yuan@amd.com/ You may consider trying my rebase here: [1]. This commit applies to v11+v3 series. I hope I didn't miss anything. If interested, please let me know whether it works for you. Thanks. [1] https://codeberg.org/pf-kernel/linux/commit/438525b8029b23967722e9c7af97c6b8deb25029
> Oleksandr Natalenko <oleksandr@natalenko.name> hat am 31.01.2023 15:13 GMT geschrieben: > > > Hello. Hi, > > On úterý 31. ledna 2023 11:37:51 CET torvic9@mailbox.org wrote: > > Can you rebase this patchset onto the newest EPP v12 series [1] ? > > > > [1] https://lore.kernel.org/linux-pm/20230131090016.3970625-1-perry.yuan@amd.com/ > > You may consider trying my rebase here: [1]. > > This commit applies to v11+v3 series. I hope I didn't miss anything. > > If interested, please let me know whether it works for you. Thank you for your work. I rebased it myself in the meantime. > > Thanks. > > [1] https://codeberg.org/pf-kernel/linux/commit/438525b8029b23967722e9c7af97c6b8deb25029 > > -- > Oleksandr Natalenko (post-factum)
On 31 Jan 11:37, torvic9@mailbox.org wrote: > > > Wyes Karny <wyes.karny@amd.com> hat am 31.01.2023 05:21 GMT geschrieben: > > > > > > From ACPI spec[1] below 3 modes for CPPC can be defined: > > 1. Non autonomous: OS scaling governor specifies operating frequency/ > > performance level through `Desired Performance` register and platform > > follows that. > > 2. Guided autonomous: OS scaling governor specifies min and max > > frequencies/ performance levels through `Minimum Performance` and > > `Maximum Performance` register, and platform can autonomously select an > > operating frequency in this range. > > 3. Fully autonomous: OS only hints (via EPP) to platform for the required > > energy performance preference for the workload and platform autonomously > > scales the frequency. > > > > Currently (1) is supported by amd_pstate as passive mode, and (3) is > > implemented by EPP support[2]. This change is to support (2). > > > > In guided autonomous mode the min_perf is based on the input from the > > scaling governor. For example, in case of schedutil this value depends > > on the current utilization. And max_perf is set to max capacity. > > > > To activate guided auto mode ``amd_pstate=guided`` command line > > parameter has to be passed in the kernel. > > > > Below are the results (normalized) of benchmarks with this patch: > > System: Genoa 96C 192T > > Kernel: 6.2.0-rc2 + EPP v11 + patch > > Scaling governor: schedutil > > > > ================ dbench comparisons ================ > > dbench result comparison: > > Here results are throughput (MB/s) > > Clients: acpi-cpufreq amd_pst+passive amd_pst+guided > > 1 1.00 (0.00 pct) 1.01 (1.00 pct) 1.02 (2.00 pct) > > 2 1.07 (0.00 pct) 1.06 (-0.93 pct) 1.07 (0.00 pct) > > 4 1.68 (0.00 pct) 1.70 (1.19 pct) 1.72 (2.38 pct) > > 8 2.61 (0.00 pct) 2.68 (2.68 pct) 2.76 (5.74 pct) > > 16 4.16 (0.00 pct) 4.24 (1.92 pct) 4.53 (8.89 pct) > > 32 5.98 (0.00 pct) 6.17 (3.17 pct) 7.30 (22.07 pct) > > 64 8.67 (0.00 pct) 8.99 (3.69 pct) 10.71 (23.52 pct) > > 128 11.98 (0.00 pct) 12.52 (4.50 pct) 14.67 (22.45 pct) > > 256 15.73 (0.00 pct) 16.13 (2.54 pct) 17.81 (13.22 pct) > > 512 15.77 (0.00 pct) 16.32 (3.48 pct) 16.39 (3.93 pct) > > dbench power comparison: > > Clients: acpi-cpufreq amd_pst+passive amd_pst+guided > > 1 1.00 (0.00 pct) 1.00 (0.00 pct) 1.04 (4.00 pct) > > 2 0.99 (0.00 pct) 0.97 (-2.02 pct) 1.02 (3.03 pct) > > 4 0.98 (0.00 pct) 0.98 (0.00 pct) 1.02 (4.08 pct) > > 8 0.98 (0.00 pct) 0.99 (1.02 pct) 1.02 (4.08 pct) > > 16 0.99 (0.00 pct) 1.00 (1.01 pct) 1.04 (5.05 pct) > > 32 1.02 (0.00 pct) 1.02 (0.00 pct) 1.07 (4.90 pct) > > 64 1.05 (0.00 pct) 1.05 (0.00 pct) 1.11 (5.71 pct) > > 128 1.08 (0.00 pct) 1.08 (0.00 pct) 1.15 (6.48 pct) > > 256 1.12 (0.00 pct) 1.12 (0.00 pct) 1.20 (7.14 pct) > > 512 1.18 (0.00 pct) 1.17 (-0.84 pct) 1.26 (6.77 pct) > > > > ================ git-source comparisons ================ > > git-source result comparison: > > Here results are throughput (compilations per 1000 sec) > > Threads: acpi-cpufreq amd_pst+passive amd_pst+guided > > 192 1.00 (0.00 pct) 0.93 (-7.00 pct) 1.00 (0.00 pct) > > git-source power comparison: > > Threads: acpi-cpufreq amd_pst+passive amd_pst+guided > > 192 1.00 (0.00 pct) 1.00 (0.00 pct) 0.96 (-4.00 pct) > > > > ================ kernbench comparisons ================ > > kernbench result comparison: > > Here results are throughput (compilations per 1000 sec) > > Load: acpi-cpufreq amd_pst+passive amd_pst+guided > > 32 1.00 (0.00 pct) 1.01 (1.00 pct) 1.02 (2.00 pct) > > 48 1.26 (0.00 pct) 1.28 (1.58 pct) 1.25 (-0.79 pct) > > 64 1.39 (0.00 pct) 1.47 (5.75 pct) 1.43 (2.87 pct) > > 96 1.48 (0.00 pct) 1.50 (1.35 pct) 1.49 (0.67 pct) > > 128 1.29 (0.00 pct) 1.32 (2.32 pct) 1.33 (3.10 pct) > > 192 1.17 (0.00 pct) 1.20 (2.56 pct) 1.21 (3.41 pct) > > 256 1.17 (0.00 pct) 1.18 (0.85 pct) 1.20 (2.56 pct) > > 384 1.16 (0.00 pct) 1.17 (0.86 pct) 1.21 (4.31 pct) > > kernbench power comparison: > > Clients: acpi-cpufreq amd_pst+passive amd_pst+guided > > 32 1.00 (0.00 pct) 0.97 (-3.00 pct) 1.00 (0.00 pct) > > 48 0.87 (0.00 pct) 0.81 (-6.89 pct) 0.88 (1.14 pct) > > 64 0.81 (0.00 pct) 0.73 (-9.87 pct) 0.77 (-4.93 pct) > > 96 0.75 (0.00 pct) 0.74 (-1.33 pct) 0.75 (0.00 pct) > > 128 0.83 (0.00 pct) 0.79 (-4.81 pct) 0.83 (0.00 pct) > > 192 0.92 (0.00 pct) 0.88 (-4.34 pct) 0.92 (0.00 pct) > > 256 0.92 (0.00 pct) 0.88 (-4.34 pct) 0.92 (0.00 pct) > > 384 0.92 (0.00 pct) 0.88 (-4.34 pct) 0.92 (0.00 pct) > > > > ================ tbench comparisons ================ > > tbench result comparison: > > Here results are throughput (MB/s) > > Clients: acpi-cpufreq amd_pst+passive amd_pst+guided > > 1 1.00 (0.00 pct) 0.70 (-30.00 pct) 1.37 (37.00 pct) > > 2 2.64 (0.00 pct) 1.39 (-47.34 pct) 2.70 (2.27 pct) > > 4 4.89 (0.00 pct) 2.75 (-43.76 pct) 5.28 (7.97 pct) > > 8 9.46 (0.00 pct) 5.42 (-42.70 pct) 10.22 (8.03 pct) > > 16 19.05 (0.00 pct) 10.42 (-45.30 pct) 19.94 (4.67 pct) > > 32 37.50 (0.00 pct) 20.23 (-46.05 pct) 36.87 (-1.68 pct) > > 64 61.24 (0.00 pct) 43.08 (-29.65 pct) 62.96 (2.80 pct) > > 128 67.16 (0.00 pct) 69.08 (2.85 pct) 67.34 (0.26 pct) > > 256 154.59 (0.00 pct) 162.33 (5.00 pct) 156.78 (1.41 pct) > > 512 154.02 (0.00 pct) 156.74 (1.76 pct) 153.48 (-0.35 pct) > > tbench power comparison: > > Clients: acpi-cpufreq amd_pst+passive amd_pst+guided > > 1 1.00 (0.00 pct) 0.97 (-3.00 pct) 1.08 (8.00 pct) > > 2 1.04 (0.00 pct) 0.97 (-6.73 pct) 1.11 (6.73 pct) > > 4 1.12 (0.00 pct) 0.99 (-11.60 pct) 1.18 (5.35 pct) > > 8 1.25 (0.00 pct) 1.04 (-16.80 pct) 1.31 (4.80 pct) > > 16 1.53 (0.00 pct) 1.13 (-26.14 pct) 1.58 (3.26 pct) > > 32 2.01 (0.00 pct) 1.36 (-32.33 pct) 2.03 (0.99 pct) > > 64 2.58 (0.00 pct) 2.14 (-17.05 pct) 2.61 (1.16 pct) > > 128 2.80 (0.00 pct) 2.81 (0.35 pct) 2.81 (0.35 pct) > > 256 3.39 (0.00 pct) 3.43 (1.17 pct) 3.42 (0.88 pct) > > 512 3.44 (0.00 pct) 3.44 (0.00 pct) 3.44 (0.00 pct) > > > > Note: this series is based on top of EPP v11 [3] series > > Hi Wyes, > > Can you rebase this patchset onto the newest EPP v12 series [1] ? Sure, I'll rebase this on top of EPP v12. Thanks, Wyes > > [1] https://lore.kernel.org/linux-pm/20230131090016.3970625-1-perry.yuan@amd.com/ > > Cheers, > Tor Vic > > > > > Change log: > > > > v3 -> v4: > > - Fixed active mode low frequency issue reported by Peter Jung and Tor Vic > > - Documentation modification suggested by Bagas Sanjaya > > > > v2 -> v3: > > - Addressed review comments form Mario. > > - Picked up RB tag from Mario. > > - Rebase on top of EPP v11 [3]. > > > > v1 -> v2: > > - Fix issue with shared mem systems. > > - Rebase on top of EPP series. > > > > [1]: https://uefi.org/sites/default/files/resources/ACPI_6_3_final_Jan30.pdf > > [2]: https://lore.kernel.org/lkml/20221110175847.3098728-1-Perry.Yuan@amd.com/ > > [3]: https://lore.kernel.org/linux-pm/20230118075210.447418-1-perry.yuan@amd.com/ > > > > Wyes Karny (6): > > acpi: cppc: Add min and max perf reg writing support > > acpi: cppc: Add auto select register read/write support > > cpufreq: amd_pstate: Add guided autonomous mode > > Documentation: amd_pstate: Move amd_pstate param to alphabetical order > > cpufreq: amd_pstate: Add guided mode control support via sysfs > > Documentation: amd_pstate: Update amd_pstate status sysfs for guided > > > > .../admin-guide/kernel-parameters.txt | 41 ++-- > > Documentation/admin-guide/pm/amd-pstate.rst | 31 ++- > > drivers/acpi/cppc_acpi.c | 121 +++++++++++- > > drivers/cpufreq/amd-pstate.c | 184 +++++++++++++----- > > include/acpi/cppc_acpi.h | 11 ++ > > include/linux/amd-pstate.h | 2 + > > 6 files changed, 309 insertions(+), 81 deletions(-) > > > > -- > > 2.34.1
From ACPI spec[1] below 3 modes for CPPC can be defined: 1. Non autonomous: OS scaling governor specifies operating frequency/ performance level through `Desired Performance` register and platform follows that. 2. Guided autonomous: OS scaling governor specifies min and max frequencies/ performance levels through `Minimum Performance` and `Maximum Performance` register, and platform can autonomously select an operating frequency in this range. 3. Fully autonomous: OS only hints (via EPP) to platform for the required energy performance preference for the workload and platform autonomously scales the frequency. Currently (1) is supported by amd_pstate as passive mode, and (3) is implemented by EPP support[2]. This change is to support (2). In guided autonomous mode the min_perf is based on the input from the scaling governor. For example, in case of schedutil this value depends on the current utilization. And max_perf is set to max capacity. To activate guided auto mode ``amd_pstate=guided`` command line parameter has to be passed in the kernel. Below are the results (normalized) of benchmarks with this patch: System: Genoa 96C 192T Kernel: 6.2.0-rc2 + EPP v11 + patch Scaling governor: schedutil ================ dbench comparisons ================ dbench result comparison: Here results are throughput (MB/s) Clients: acpi-cpufreq amd_pst+passive amd_pst+guided 1 1.00 (0.00 pct) 1.01 (1.00 pct) 1.02 (2.00 pct) 2 1.07 (0.00 pct) 1.06 (-0.93 pct) 1.07 (0.00 pct) 4 1.68 (0.00 pct) 1.70 (1.19 pct) 1.72 (2.38 pct) 8 2.61 (0.00 pct) 2.68 (2.68 pct) 2.76 (5.74 pct) 16 4.16 (0.00 pct) 4.24 (1.92 pct) 4.53 (8.89 pct) 32 5.98 (0.00 pct) 6.17 (3.17 pct) 7.30 (22.07 pct) 64 8.67 (0.00 pct) 8.99 (3.69 pct) 10.71 (23.52 pct) 128 11.98 (0.00 pct) 12.52 (4.50 pct) 14.67 (22.45 pct) 256 15.73 (0.00 pct) 16.13 (2.54 pct) 17.81 (13.22 pct) 512 15.77 (0.00 pct) 16.32 (3.48 pct) 16.39 (3.93 pct) dbench power comparison: Clients: acpi-cpufreq amd_pst+passive amd_pst+guided 1 1.00 (0.00 pct) 1.00 (0.00 pct) 1.04 (4.00 pct) 2 0.99 (0.00 pct) 0.97 (-2.02 pct) 1.02 (3.03 pct) 4 0.98 (0.00 pct) 0.98 (0.00 pct) 1.02 (4.08 pct) 8 0.98 (0.00 pct) 0.99 (1.02 pct) 1.02 (4.08 pct) 16 0.99 (0.00 pct) 1.00 (1.01 pct) 1.04 (5.05 pct) 32 1.02 (0.00 pct) 1.02 (0.00 pct) 1.07 (4.90 pct) 64 1.05 (0.00 pct) 1.05 (0.00 pct) 1.11 (5.71 pct) 128 1.08 (0.00 pct) 1.08 (0.00 pct) 1.15 (6.48 pct) 256 1.12 (0.00 pct) 1.12 (0.00 pct) 1.20 (7.14 pct) 512 1.18 (0.00 pct) 1.17 (-0.84 pct) 1.26 (6.77 pct) ================ git-source comparisons ================ git-source result comparison: Here results are throughput (compilations per 1000 sec) Threads: acpi-cpufreq amd_pst+passive amd_pst+guided 192 1.00 (0.00 pct) 0.93 (-7.00 pct) 1.00 (0.00 pct) git-source power comparison: Threads: acpi-cpufreq amd_pst+passive amd_pst+guided 192 1.00 (0.00 pct) 1.00 (0.00 pct) 0.96 (-4.00 pct) ================ kernbench comparisons ================ kernbench result comparison: Here results are throughput (compilations per 1000 sec) Load: acpi-cpufreq amd_pst+passive amd_pst+guided 32 1.00 (0.00 pct) 1.01 (1.00 pct) 1.02 (2.00 pct) 48 1.26 (0.00 pct) 1.28 (1.58 pct) 1.25 (-0.79 pct) 64 1.39 (0.00 pct) 1.47 (5.75 pct) 1.43 (2.87 pct) 96 1.48 (0.00 pct) 1.50 (1.35 pct) 1.49 (0.67 pct) 128 1.29 (0.00 pct) 1.32 (2.32 pct) 1.33 (3.10 pct) 192 1.17 (0.00 pct) 1.20 (2.56 pct) 1.21 (3.41 pct) 256 1.17 (0.00 pct) 1.18 (0.85 pct) 1.20 (2.56 pct) 384 1.16 (0.00 pct) 1.17 (0.86 pct) 1.21 (4.31 pct) kernbench power comparison: Clients: acpi-cpufreq amd_pst+passive amd_pst+guided 32 1.00 (0.00 pct) 0.97 (-3.00 pct) 1.00 (0.00 pct) 48 0.87 (0.00 pct) 0.81 (-6.89 pct) 0.88 (1.14 pct) 64 0.81 (0.00 pct) 0.73 (-9.87 pct) 0.77 (-4.93 pct) 96 0.75 (0.00 pct) 0.74 (-1.33 pct) 0.75 (0.00 pct) 128 0.83 (0.00 pct) 0.79 (-4.81 pct) 0.83 (0.00 pct) 192 0.92 (0.00 pct) 0.88 (-4.34 pct) 0.92 (0.00 pct) 256 0.92 (0.00 pct) 0.88 (-4.34 pct) 0.92 (0.00 pct) 384 0.92 (0.00 pct) 0.88 (-4.34 pct) 0.92 (0.00 pct) ================ tbench comparisons ================ tbench result comparison: Here results are throughput (MB/s) Clients: acpi-cpufreq amd_pst+passive amd_pst+guided 1 1.00 (0.00 pct) 0.70 (-30.00 pct) 1.37 (37.00 pct) 2 2.64 (0.00 pct) 1.39 (-47.34 pct) 2.70 (2.27 pct) 4 4.89 (0.00 pct) 2.75 (-43.76 pct) 5.28 (7.97 pct) 8 9.46 (0.00 pct) 5.42 (-42.70 pct) 10.22 (8.03 pct) 16 19.05 (0.00 pct) 10.42 (-45.30 pct) 19.94 (4.67 pct) 32 37.50 (0.00 pct) 20.23 (-46.05 pct) 36.87 (-1.68 pct) 64 61.24 (0.00 pct) 43.08 (-29.65 pct) 62.96 (2.80 pct) 128 67.16 (0.00 pct) 69.08 (2.85 pct) 67.34 (0.26 pct) 256 154.59 (0.00 pct) 162.33 (5.00 pct) 156.78 (1.41 pct) 512 154.02 (0.00 pct) 156.74 (1.76 pct) 153.48 (-0.35 pct) tbench power comparison: Clients: acpi-cpufreq amd_pst+passive amd_pst+guided 1 1.00 (0.00 pct) 0.97 (-3.00 pct) 1.08 (8.00 pct) 2 1.04 (0.00 pct) 0.97 (-6.73 pct) 1.11 (6.73 pct) 4 1.12 (0.00 pct) 0.99 (-11.60 pct) 1.18 (5.35 pct) 8 1.25 (0.00 pct) 1.04 (-16.80 pct) 1.31 (4.80 pct) 16 1.53 (0.00 pct) 1.13 (-26.14 pct) 1.58 (3.26 pct) 32 2.01 (0.00 pct) 1.36 (-32.33 pct) 2.03 (0.99 pct) 64 2.58 (0.00 pct) 2.14 (-17.05 pct) 2.61 (1.16 pct) 128 2.80 (0.00 pct) 2.81 (0.35 pct) 2.81 (0.35 pct) 256 3.39 (0.00 pct) 3.43 (1.17 pct) 3.42 (0.88 pct) 512 3.44 (0.00 pct) 3.44 (0.00 pct) 3.44 (0.00 pct) Note: this series is based on top of EPP v11 [3] series Change log: v3 -> v4: - Fixed active mode low frequency issue reported by Peter Jung and Tor Vic - Documentation modification suggested by Bagas Sanjaya v2 -> v3: - Addressed review comments form Mario. - Picked up RB tag from Mario. - Rebase on top of EPP v11 [3]. v1 -> v2: - Fix issue with shared mem systems. - Rebase on top of EPP series. [1]: https://uefi.org/sites/default/files/resources/ACPI_6_3_final_Jan30.pdf [2]: https://lore.kernel.org/lkml/20221110175847.3098728-1-Perry.Yuan@amd.com/ [3]: https://lore.kernel.org/linux-pm/20230118075210.447418-1-perry.yuan@amd.com/ Wyes Karny (6): acpi: cppc: Add min and max perf reg writing support acpi: cppc: Add auto select register read/write support cpufreq: amd_pstate: Add guided autonomous mode Documentation: amd_pstate: Move amd_pstate param to alphabetical order cpufreq: amd_pstate: Add guided mode control support via sysfs Documentation: amd_pstate: Update amd_pstate status sysfs for guided .../admin-guide/kernel-parameters.txt | 41 ++-- Documentation/admin-guide/pm/amd-pstate.rst | 31 ++- drivers/acpi/cppc_acpi.c | 121 +++++++++++- drivers/cpufreq/amd-pstate.c | 184 +++++++++++++----- include/acpi/cppc_acpi.h | 11 ++ include/linux/amd-pstate.h | 2 + 6 files changed, 309 insertions(+), 81 deletions(-)