Nicholas Piggin f2ac428e0e powerpc/pseries/cpuidle: add polling idle for shared processor guests ...

For shared processor guests (e.g., KVM), add an idle polling mode rather
than immediately returning to the hypervisor when the guest CPU goes
idle.

Test setup is a 2 socket POWER9 with 4 guests running, each with vCPUs
equal to 1/2 of real of CPUs. Saturated each guest with tbench. Using
polling idle gives about 1.4x throughput.

Kernel compile speed was not changed significantly.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

2018-01-18 15:43:44 +11:00

..

governors

cpuidle: ladder: Add per CPU PM QoS resume latency support

2017-11-08 12:16:01 +01:00

coupled.c

smp: Avoid using two cache lines for struct call_single_data

2017-08-29 15:14:38 +02:00

cpuidle-arm.c

ARM: cpuidle: Refactor rollback operations if init fails

2017-10-14 01:01:11 +02:00

cpuidle-at91.c

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cpuidle-big_little.c

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cpuidle-calxeda.c

…

cpuidle-clps711x.c

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cpuidle-cps.c

Update MIPS email addresses

2017-11-03 09:02:30 -07:00

cpuidle-exynos.c

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cpuidle-kirkwood.c

…

cpuidle-mvebu-v7.c

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cpuidle-powernv.c

cpuidle/powernv: avoid double irq enable coming out of idle

2018-01-18 15:43:43 +11:00

cpuidle-pseries.c

powerpc/pseries/cpuidle: add polling idle for shared processor guests

2018-01-18 15:43:44 +11:00

cpuidle-ux500.c

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cpuidle-zynq.c

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cpuidle.c

cpuidle: Avoid assignment in if () argument

2017-11-08 23:15:30 +01:00

cpuidle.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

driver.c

cpuidle: Make drivers initialize polling state

2017-08-30 03:06:33 +02:00

dt_idle_states.c

Merge branch 'pm-sleep'

2017-09-04 00:06:02 +02:00

dt_idle_states.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

governor.c

cpuidle: governors: Remove remaining old module code

2016-10-21 14:49:51 +02:00

Kconfig

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Kconfig.arm

ARM: cpuidle: Support asymmetric idle definition

2017-06-24 01:51:00 +02:00

Kconfig.mips

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Kconfig.powerpc

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Makefile

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

poll_state.c

cpuidle: Make drivers initialize polling state

2017-08-30 03:06:33 +02:00

sysfs.c

cpuidle: Validate cpu_dev in cpuidle_add_sysfs()

2017-03-21 22:26:37 +01:00