From: Jeremy Linton <jlinton@xxxxxxxxxx> redhat: configs: Disable FIE on arm FIE intends to estimate cpu work for a given task more accurately. On an ACPI/CPPC machine, the code can utilize PCC mailboxes that trap to the firmware (which are all the CPPC machines at this point). Meaning the CPU overhead of this feature far outweighs any potential benefit. The default is being changed upstream, along with some related code changes, but until the benefit is proven, it should be disabled in all fedora releases. Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2012226 Signed-off-by: Jeremy Linton <jeremy.linton@xxxxxxx> diff --git a/redhat/configs/fedora/generic/arm/CONFIG_ACPI_CPPC_CPUFREQ_FIE b/redhat/configs/fedora/generic/arm/CONFIG_ACPI_CPPC_CPUFREQ_FIE index blahblah..blahblah 100644 --- a/redhat/configs/fedora/generic/arm/CONFIG_ACPI_CPPC_CPUFREQ_FIE +++ b/redhat/configs/fedora/generic/arm/CONFIG_ACPI_CPPC_CPUFREQ_FIE @@ -1 +1 @@ -CONFIG_ACPI_CPPC_CPUFREQ_FIE=y +# CONFIG_ACPI_CPPC_CPUFREQ_FIE is not set -- https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1990 _______________________________________________ kernel mailing list -- kernel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to kernel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/kernel@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
