Rafael J. Wysocki 6dbf5cea05 cpuidle: menu: Avoid taking spinlock for accessing QoS values ... After commit 9908859aca (cpuidle/menu: add per CPU PM QoS resume latency consideration) the cpuidle menu governor calls dev_pm_qos_read_value() on CPU devices to read the current resume latency QoS constraint values for them. That function takes a spinlock to prevent the device's power.qos pointer from becoming NULL during the access which is a problem for the RT patchset where spinlocks are converted into mutexes and the idle loop stops working. However, it is not even necessary for the menu governor to take that spinlock, because the power.qos pointer accessed under it cannot be modified during the access anyway. For this reason, introduce a "raw" routine for accessing device QoS resume latency constraints without locking and use it in the menu governor. Fixes: 9908859aca (cpuidle/menu: add per CPU PM QoS resume latency consideration) Acked-by: Alex Shi <alex.shi@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2017-02-27 15:07:38 +01:00
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acpi	More ACPI updates for v4.10-rc1	2016-12-22 10:19:32 -08:00
asm-generic	asm-prototypes: Clear any CPP defines before declaring the functions	2017-01-05 12:57:42 +01:00
clocksource
crypto	This pull contains one set of changes: a conversion of the crypto DocBook	2016-12-17 16:00:34 -08:00
drm	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
dt-bindings	dt-bindings: mfd: Remove TPS65217 interrupts	2016-12-27 10:06:00 -08:00
keys
kvm	KVM: arm64: Access CNTHCTL_EL2 bit fields correctly on VHE systems	2017-01-13 11:19:25 +00:00
linux	cpuidle: menu: Avoid taking spinlock for accessing QoS values	2017-02-27 15:07:38 +01:00
math-emu
media
memory
misc
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-12-27 16:04:37 -08:00
pcmcia
ras
rdma	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
rxrpc
scsi	Merge remote-tracking branch 'mkp-scsi/fixes' into fixes	2017-01-17 17:32:54 -05:00
soc	powerpc updates for 4.10	2016-12-16 09:26:42 -08:00
sound	Merge remote-tracking branches 'asoc/fix/arizona', 'asoc/fix/dpcm', 'asoc/fix/dwc', 'asoc/fix/fsl-ssi' and 'asoc/fix/hdmi-codec' into asoc-linus	2017-01-10 10:47:50 +00:00
target	target: add XCOPY target/segment desc sense codes	2017-01-10 08:40:32 -08:00
trace	Merge branch 'for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2017-01-13 17:40:22 -08:00
uapi	bpf: rework prog_digest into prog_tag	2017-01-16 14:03:31 -05:00
video
xen
Kbuild