| Message ID | 20221128163848.362359-1-paolo.pisati@canonical.com |
|---|---|
| Headers | show |
| Series | Fix AMD-PState driver for Genoa CPU | expand |
On 11/28/22 9:38 AM, Paolo Pisati wrote: > BugLink: https://bugs.launchpad.net/bugs/1998106 > > [Impact] > > During AMD Genoa development, the datacenter team identified performance > regressions that were caused by the amd-pstate driver. A first round of fixes > already landed upstream (v6.1-rc7) in the amd-pstate driver, and should be > backported to all the affected kernels. > > [Fix] > > Backport the upstream amd-pstate fixes: > > https://lore.kernel.org/linux-pm/20221117073541.3350600-1-Perry.Yuan@amd.com/T/#m4616d857ca472937d1e1d31131ddc3261fa17b2a > > [Regression potential] > > Clean cherry-picks of upstream fixes, impact a single driver (amd-pstate) and > the new mode (passive) is disabled by default/opt-in. Cherry-picked one > additional documentation patch to make the entire set apply cleanly. > > Meng Li (1): > Documentation: amd-pstate: Add unit test introduction > > Perry Yuan (4): > cpufreq: amd-pstate: change amd-pstate driver to be built-in type > cpufreq: amd-pstate: add amd-pstate driver parameter for mode > selection > Documentation: amd-pstate: add driver working mode introduction > Documentation: add amd-pstate kernel command line options > > Wyes Karny (1): > cpufreq: amd-pstate: cpufreq: amd-pstate: reset MSR_AMD_PERF_CTL > register at init > > .../admin-guide/kernel-parameters.txt | 11 +++ > Documentation/admin-guide/pm/amd-pstate.rst | 98 ++++++++++++++++--- > drivers/cpufreq/Kconfig.x86 | 2 +- > drivers/cpufreq/amd-pstate.c | 49 +++++++--- > 4 files changed, 131 insertions(+), 29 deletions(-) > Acked-by: Tim Gardner <tim.gardner@canonical.com>
On Mon, Nov 28, 2022 at 05:38:42PM +0100, Paolo Pisati wrote: > BugLink: https://bugs.launchpad.net/bugs/1998106 > > [Impact] > > During AMD Genoa development, the datacenter team identified performance > regressions that were caused by the amd-pstate driver. A first round of fixes > already landed upstream (v6.1-rc7) in the amd-pstate driver, and should be > backported to all the affected kernels. > > [Fix] > > Backport the upstream amd-pstate fixes: > > https://lore.kernel.org/linux-pm/20221117073541.3350600-1-Perry.Yuan@amd.com/T/#m4616d857ca472937d1e1d31131ddc3261fa17b2a > > [Regression potential] > > Clean cherry-picks of upstream fixes, impact a single driver (amd-pstate) and > the new mode (passive) is disabled by default/opt-in. Cherry-picked one > additional documentation patch to make the entire set apply cleanly. > > Meng Li (1): > Documentation: amd-pstate: Add unit test introduction > > Perry Yuan (4): > cpufreq: amd-pstate: change amd-pstate driver to be built-in type > cpufreq: amd-pstate: add amd-pstate driver parameter for mode > selection > Documentation: amd-pstate: add driver working mode introduction > Documentation: add amd-pstate kernel command line options > > Wyes Karny (1): > cpufreq: amd-pstate: cpufreq: amd-pstate: reset MSR_AMD_PERF_CTL > register at init > > .../admin-guide/kernel-parameters.txt | 11 +++ > Documentation/admin-guide/pm/amd-pstate.rst | 98 ++++++++++++++++--- > drivers/cpufreq/Kconfig.x86 | 2 +- > drivers/cpufreq/amd-pstate.c | 49 +++++++--- > 4 files changed, 131 insertions(+), 29 deletions(-) > Acked-by: Cory Todd <cory.todd@canonical.com>
Applied to kinetic:linux master-next thanks! - Luke On Mon, Nov 28, 2022 at 8:39 AM Paolo Pisati <paolo.pisati@canonical.com> wrote: > BugLink: https://bugs.launchpad.net/bugs/1998106 > > [Impact] > > During AMD Genoa development, the datacenter team identified performance > regressions that were caused by the amd-pstate driver. A first round of > fixes > already landed upstream (v6.1-rc7) in the amd-pstate driver, and should be > backported to all the affected kernels. > > [Fix] > > Backport the upstream amd-pstate fixes: > > > https://lore.kernel.org/linux-pm/20221117073541.3350600-1-Perry.Yuan@amd.com/T/#m4616d857ca472937d1e1d31131ddc3261fa17b2a > > [Regression potential] > > Clean cherry-picks of upstream fixes, impact a single driver (amd-pstate) > and > the new mode (passive) is disabled by default/opt-in. Cherry-picked one > additional documentation patch to make the entire set apply cleanly. > > Meng Li (1): > Documentation: amd-pstate: Add unit test introduction > > Perry Yuan (4): > cpufreq: amd-pstate: change amd-pstate driver to be built-in type > cpufreq: amd-pstate: add amd-pstate driver parameter for mode > selection > Documentation: amd-pstate: add driver working mode introduction > Documentation: add amd-pstate kernel command line options > > Wyes Karny (1): > cpufreq: amd-pstate: cpufreq: amd-pstate: reset MSR_AMD_PERF_CTL > register at init > > .../admin-guide/kernel-parameters.txt | 11 +++ > Documentation/admin-guide/pm/amd-pstate.rst | 98 ++++++++++++++++--- > drivers/cpufreq/Kconfig.x86 | 2 +- > drivers/cpufreq/amd-pstate.c | 49 +++++++--- > 4 files changed, 131 insertions(+), 29 deletions(-) > > -- > 2.34.1 > > > -- > kernel-team mailing list > kernel-team@lists.ubuntu.com > https://lists.ubuntu.com/mailman/listinfo/kernel-team >
BugLink: https://bugs.launchpad.net/bugs/1998106 [Impact] During AMD Genoa development, the datacenter team identified performance regressions that were caused by the amd-pstate driver. A first round of fixes already landed upstream (v6.1-rc7) in the amd-pstate driver, and should be backported to all the affected kernels. [Fix] Backport the upstream amd-pstate fixes: https://lore.kernel.org/linux-pm/20221117073541.3350600-1-Perry.Yuan@amd.com/T/#m4616d857ca472937d1e1d31131ddc3261fa17b2a [Regression potential] Clean cherry-picks of upstream fixes, impact a single driver (amd-pstate) and the new mode (passive) is disabled by default/opt-in. Cherry-picked one additional documentation patch to make the entire set apply cleanly. Meng Li (1): Documentation: amd-pstate: Add unit test introduction Perry Yuan (4): cpufreq: amd-pstate: change amd-pstate driver to be built-in type cpufreq: amd-pstate: add amd-pstate driver parameter for mode selection Documentation: amd-pstate: add driver working mode introduction Documentation: add amd-pstate kernel command line options Wyes Karny (1): cpufreq: amd-pstate: cpufreq: amd-pstate: reset MSR_AMD_PERF_CTL register at init .../admin-guide/kernel-parameters.txt | 11 +++ Documentation/admin-guide/pm/amd-pstate.rst | 98 ++++++++++++++++--- drivers/cpufreq/Kconfig.x86 | 2 +- drivers/cpufreq/amd-pstate.c | 49 +++++++--- 4 files changed, 131 insertions(+), 29 deletions(-)