lkml.org 
[lkml]   [2022]   [Aug]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH v3 2/2] cpufreq: CPPC: Change FIE default
    On 18-08-22, 16:16, Jeremy Linton wrote:
    > FIE is mostly implemented as PCC mailboxes on arm machines. This was
    > enabled by default without any data suggesting that it does anything
    > but hurt system performance. Lets change the default to 'n' until
    > hardware appears which clearly benefits.
    >
    > Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
    > ---
    > drivers/cpufreq/Kconfig.arm | 2 +-
    > 1 file changed, 1 insertion(+), 1 deletion(-)
    >
    > diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
    > index 954749afb5fe..ad66d8f15db0 100644
    > --- a/drivers/cpufreq/Kconfig.arm
    > +++ b/drivers/cpufreq/Kconfig.arm
    > @@ -22,7 +22,7 @@ config ACPI_CPPC_CPUFREQ
    > config ACPI_CPPC_CPUFREQ_FIE
    > bool "Frequency Invariance support for CPPC cpufreq driver"
    > depends on ACPI_CPPC_CPUFREQ && GENERIC_ARCH_TOPOLOGY
    > - default y
    > + default n
    > help
    > This extends frequency invariance support in the CPPC cpufreq driver,
    > by using CPPC delivered and reference performance counters.

    Why is this required after we have the first patch in ?

    --
    viresh

    \
     
     \ /
      Last update: 2022-08-24 08:14    [W:3.445 / U:0.080 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site