| Message ID | 20230405194820.13770-1-michael.reed@canonical.com |
|---|---|
| Headers | show |
| Series | Performance per Watt (DAPC) enabled in the BIOS | expand |
On 4/5/23 1:48 PM, Michael Reed wrote: > From: Michael Reed <Michael.Reed@canonical.com> > > SRU Justification: > > BugLink: https://bugs.launchpad.net/bugs/2008527 > > [Impact] > > A Dell system that has a profile setting of "Performance Per Watt (DAPC)" enabled in the BIOS and running Ubuntu-22.04 does not boot into OS as quickly as expected. > > How reproducible: > > Steps to Reproduce: > > 1. On the Dell system enable "Performance Per Watt (DAPC)" from BIOS. > 2. Install Ubuntu-22.04 > 3. Boot into OS > 4. Check the bootup time > > Expected results: > OS should boot normally and need to consume less bootup time > > [Fix] > > 13fdbc8b8da6 cpufreq: ACPI: Defer setting boost MSRs > > [Test Plan] > > 1. Set system profile as "Performance Per Watt (DAPC)" from BIOS setting > 2. Install Ubuntu-22.04 > 3. Boot into OS > 4. Check the bootup time > > [Where problems could occur] > > Regression risk: low to medium. > > [Other Info] > Jammy > https://code.launchpad.net/~mreed8855/ubuntu/+source/linux/+git/jammy/+ref/lp_2008527_dapc > > Kinetic > https://code.launchpad.net/~mreed8855/ubuntu/+source/linux/+git/kinetic/+ref/lp_2008527_dapc_kinetic > > Stuart Hayes (1): > cpufreq: ACPI: Defer setting boost MSRs > > drivers/cpufreq/acpi-cpufreq.c | 31 +++---------------------------- > 1 file changed, 3 insertions(+), 28 deletions(-) > Acked-by: Tim Gardner <tim.gardner@canonical.com>
Acked-by: Luke Nowakowski-Krijger <luke.nowakowskikrijger@canonical.com> On Wed, Apr 5, 2023 at 9:48 PM Michael Reed <michael.reed@canonical.com> wrote: > From: Michael Reed <Michael.Reed@canonical.com> > > SRU Justification: > > BugLink: https://bugs.launchpad.net/bugs/2008527 > > [Impact] > > A Dell system that has a profile setting of "Performance Per Watt (DAPC)" > enabled in the BIOS and running Ubuntu-22.04 does not boot into OS as > quickly as expected. > > How reproducible: > > Steps to Reproduce: > > 1. On the Dell system enable "Performance Per Watt (DAPC)" from BIOS. > 2. Install Ubuntu-22.04 > 3. Boot into OS > 4. Check the bootup time > > Expected results: > OS should boot normally and need to consume less bootup time > > [Fix] > > 13fdbc8b8da6 cpufreq: ACPI: Defer setting boost MSRs > > [Test Plan] > > 1. Set system profile as "Performance Per Watt (DAPC)" from BIOS setting > 2. Install Ubuntu-22.04 > 3. Boot into OS > 4. Check the bootup time > > [Where problems could occur] > > Regression risk: low to medium. > > [Other Info] > Jammy > > https://code.launchpad.net/~mreed8855/ubuntu/+source/linux/+git/jammy/+ref/lp_2008527_dapc > > Kinetic > > https://code.launchpad.net/~mreed8855/ubuntu/+source/linux/+git/kinetic/+ref/lp_2008527_dapc_kinetic > > Stuart Hayes (1): > cpufreq: ACPI: Defer setting boost MSRs > > drivers/cpufreq/acpi-cpufreq.c | 31 +++---------------------------- > 1 file changed, 3 insertions(+), 28 deletions(-) > > -- > 2.34.1 > > > -- > kernel-team mailing list > kernel-team@lists.ubuntu.com > https://lists.ubuntu.com/mailman/listinfo/kernel-team >
Applied to jammy and kinetic linux master-next I changed the buglink to be near the top just for the aesthetic consistency :) Thanks, - Luke On Wed, Apr 5, 2023 at 9:48 PM Michael Reed <michael.reed@canonical.com> wrote: > From: Michael Reed <Michael.Reed@canonical.com> > > SRU Justification: > > BugLink: https://bugs.launchpad.net/bugs/2008527 > > [Impact] > > A Dell system that has a profile setting of "Performance Per Watt (DAPC)" > enabled in the BIOS and running Ubuntu-22.04 does not boot into OS as > quickly as expected. > > How reproducible: > > Steps to Reproduce: > > 1. On the Dell system enable "Performance Per Watt (DAPC)" from BIOS. > 2. Install Ubuntu-22.04 > 3. Boot into OS > 4. Check the bootup time > > Expected results: > OS should boot normally and need to consume less bootup time > > [Fix] > > 13fdbc8b8da6 cpufreq: ACPI: Defer setting boost MSRs > > [Test Plan] > > 1. Set system profile as "Performance Per Watt (DAPC)" from BIOS setting > 2. Install Ubuntu-22.04 > 3. Boot into OS > 4. Check the bootup time > > [Where problems could occur] > > Regression risk: low to medium. > > [Other Info] > Jammy > > https://code.launchpad.net/~mreed8855/ubuntu/+source/linux/+git/jammy/+ref/lp_2008527_dapc > > Kinetic > > https://code.launchpad.net/~mreed8855/ubuntu/+source/linux/+git/kinetic/+ref/lp_2008527_dapc_kinetic > > Stuart Hayes (1): > cpufreq: ACPI: Defer setting boost MSRs > > drivers/cpufreq/acpi-cpufreq.c | 31 +++---------------------------- > 1 file changed, 3 insertions(+), 28 deletions(-) > > -- > 2.34.1 > > > -- > kernel-team mailing list > kernel-team@lists.ubuntu.com > https://lists.ubuntu.com/mailman/listinfo/kernel-team >
From: Michael Reed <Michael.Reed@canonical.com> SRU Justification: BugLink: https://bugs.launchpad.net/bugs/2008527 [Impact] A Dell system that has a profile setting of "Performance Per Watt (DAPC)" enabled in the BIOS and running Ubuntu-22.04 does not boot into OS as quickly as expected. How reproducible: Steps to Reproduce: 1. On the Dell system enable "Performance Per Watt (DAPC)" from BIOS. 2. Install Ubuntu-22.04 3. Boot into OS 4. Check the bootup time Expected results: OS should boot normally and need to consume less bootup time [Fix] 13fdbc8b8da6 cpufreq: ACPI: Defer setting boost MSRs [Test Plan] 1. Set system profile as "Performance Per Watt (DAPC)" from BIOS setting 2. Install Ubuntu-22.04 3. Boot into OS 4. Check the bootup time [Where problems could occur] Regression risk: low to medium. [Other Info] Jammy https://code.launchpad.net/~mreed8855/ubuntu/+source/linux/+git/jammy/+ref/lp_2008527_dapc Kinetic https://code.launchpad.net/~mreed8855/ubuntu/+source/linux/+git/kinetic/+ref/lp_2008527_dapc_kinetic Stuart Hayes (1): cpufreq: ACPI: Defer setting boost MSRs drivers/cpufreq/acpi-cpufreq.c | 31 +++---------------------------- 1 file changed, 3 insertions(+), 28 deletions(-)