Both the VM and EXT4 have a "commit to disk after X seconds" time.
Currently the EXT4 time is shorter than our VM time, which is a bit
suboptional,
it's better for performance to let the VM do the writeouts in bulk
rather than something deep in the journalling layer.

(DISTRO TWEAK -- NOT FOR UPSTREAM)

Signed-off-by: Arjan van de Ven <[email protected]>
Signed-off-by: Jose Carlos Venegas Munoz <[email protected]>

Reduce wakeups for PME checks, which are a workaround for miswired
boards (sadly, too many of them) in laptops.

reduce wakeups in ksm by adding rounding (aligning) when
the sleep times are 1 second or longer

Signed-off-by: Arjan van de Ven <[email protected]>

Increase target_residency in cpuidle cstate

Tune intel_idle to be a bit less agressive;
Clear linux is cleaner in hygiene (wakupes) than the average linux,
so we can afford changing these in a way that increases
performance while keeping power efficiency

NO point recalibrating for known-constant tsc ...
saves 200ms+ of boot time.

ATA init is the long pole in the boot process, and its asynchronous.
move the graphics init after it so that ata and graphics initialize
in parallel

…default

As Clear Linux boots fast the device is not ready when
the mounting code is reached, so a retry device scan will
be performed every 0.5 sec for at least 40 sec
and synchronize the async task.

Signed-off-by: Miguel Bernal Marin <[email protected]>

Prefer the order of specific version before generic and /etc before
/lib to enable the user to give specific overrides for generic
firmware and distribution firmware.

Signed-off-by: Kai Krakow <[email protected]>

These settings are needed to prevent networking issues when
the networking modules come up by default without explicit
settings, which breaks some cases.

We don't want the modprobe settings to be read at boot time
if we're not going to do anything else ever.

Signed-off-by: Kai Krakow <[email protected]>

Signed-off-by: Kai Krakow <[email protected]>

Signed-off-by: Kai Krakow <[email protected]>

tweak rwsem owner spinning a bit

Signed-off-by: Kai Krakow <[email protected]>

Change libahci to ignore firmware's staggered spin-up flag. End-users
who wish to honor firmware's SSS flag can add the following kernel
parameter to a new file at /etc/kernel/cmdline.d/ignore_sss.conf:
    libahci.ignore_sss=0

And then run
    sudo clr-boot-manager update

Signed-off-by: Joe Konno <[email protected]>

print cpu number when we print a crash

Signed-off-by: Kai Krakow <[email protected]>

…the same

This is POC to support rollback. This is a simple version, admin uses
echo 2 instead of echo 1 to reload. We don't do the version checks.

#echo 1 > /sys/devices/system/cpu/microcode/reload

The following usage, writing 2 to reload file is helpful to reload
the microcode again even if the revision is less than what is loaded.

#echo 2 > /sys/devices/system/cpu/microcode/reload

Signed-off-by: Ashok Raj <[email protected]>

Signed-off-by: Kai Krakow <[email protected]>

Signed-off-by: Kai Krakow <[email protected]>

Signed-off-by: Kai Krakow <[email protected]>

On systems with overclocking enabled, CPPC Highest Performance can be
hard coded to 0xff. In this case even if we have cores with different
highest performance, ITMT can't be enabled as the current implementation
depends on CPPC Highest Performance.

On such systems we can use MSR_HWP_CAPABILITIES maximum performance field
when CPPC.Highest Performance is 0xff.

Due to legacy reasons, we can't solely depend on MSR_HWP_CAPABILITIES as
in some older systems CPPC Highest Performance is the only way to identify
different performing cores.

Signed-off-by: Srinivas Pandruvada <[email protected]>

make sure there's at least 1024 per cpu pages... a reasonably small
amount for todays system

Signed-off-by: Kai Krakow <[email protected]>

Signed-off-by: Kai Krakow <[email protected]>

When the destination CPU is an SMT sibling and idle, it can only help the
busiest group if all of its other SMT siblings are also idle. Otherwise,
there is not increase in throughput.

It does not matter whether the busiest group has SMT siblings. Simply
check if there are any tasks running on the local group before proceeding.

Cc: Ben Segall <[email protected]>
Cc: Daniel Bristot de Oliveira <[email protected]>
Cc: Dietmar Eggemann <[email protected]>
Cc: Len Brown <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Rafael J. Wysocki <[email protected]>
Cc: Srinivas Pandruvada <[email protected]>
Cc: Steven Rostedt <[email protected]>
Cc: Tim C. Chen <[email protected]>
Cc: Valentin Schneider <[email protected]>
Cc: [email protected]
Cc: [email protected]
Reviewed-by: Len Brown <[email protected]>
Signed-off-by: Ricardo Neri <[email protected]>

When more than one SMT siblings of a physical core are busy, an idle CPU
of lower priority can help.

Indicate that the low priority CPU can do active balancing from the high-
priority CPU only if they belong to separate cores.

Cc: Ben Segall <[email protected]>
Cc: Daniel Bristot de Oliveira <[email protected]>
Cc: Dietmar Eggemann <[email protected]>
Cc: Len Brown <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Rafael J. Wysocki <[email protected]>
Cc: Srinivas Pandruvada <[email protected]>
Cc: Steven Rostedt <[email protected]>
Cc: Tim C. Chen <[email protected]>
Cc: Valentin Schneider <[email protected]>
Cc: [email protected]
Cc: [email protected]
Reviewed-by: Len Brown <[email protected]>
Signed-off-by: Ricardo Neri <[email protected]>

Having different priorities for each SMT sibling triggers unnecessary
load balancing towards the higher-priority sibling.

The scheduler now has logic to allow lower-priority CPUs to relieve load
from scheduling groups composed of SMT siblings with more than one busy
sibling.

Hence, it is no longer necessary to give different priorities to each of
the SMT siblings of a physical core.

Cc: Ben Segall <[email protected]>
Cc: Daniel Bristot de Oliveira <[email protected]>
Cc: Dietmar Eggemann <[email protected]>
Cc: Len Brown <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Rafael J. Wysocki <[email protected]>
Cc: Srinivas Pandruvada <[email protected]>
Cc: Steven Rostedt <[email protected]>
Cc: Tim C. Chen <[email protected]>
Cc: Valentin Schneider <[email protected]>
Cc: [email protected]
Cc: [email protected]
Reviewed-by: Len Brown <[email protected]>
Signed-off-by: Ricardo Neri <[email protected]>