Catalin Marinas 8a1d3de19b cpuidle: Do not access cpuidle_devices when !CONFIG_CPU_IDLE ...

commit 9bd616e3db upstream.

The cpuidle_devices per-CPU variable is only defined when CPU_IDLE is
enabled. Commit c8cc7d4de7 ("sched/idle: Reorganize the idle loop")
removed the #ifdef CONFIG_CPU_IDLE around cpuidle_idle_call() with the
compiler optimising away __this_cpu_read(cpuidle_devices). However, with
CONFIG_UBSAN && !CONFIG_CPU_IDLE, this optimisation no longer happens
and the kernel fails to link since cpuidle_devices is not defined.

This patch introduces an accessor function for the current CPU cpuidle
device (returning NULL when !CONFIG_CPU_IDLE) and uses it in
cpuidle_idle_call().

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: 4.5+ <stable@vger.kernel.org> # 4.5+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-11-10 07:41:43 -08:00

..

acpi

Merge branch 'acpi-pci'

2015-11-07 01:30:10 +01:00

asm-generic

ioremap: Update pgtable free interfaces with addr

2018-08-17 20:56:45 +02:00

clocksource

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crypto

crypto: vmac - separate tfm and request context

2018-08-17 20:56:45 +02:00

drm

drm: Add DP PSR2 sink enable bit

2018-08-06 16:24:39 +02:00

dt-bindings

ARM: dts: Fix omap3 off mode pull defines

2017-11-21 09:21:19 +01:00

keys

KEYS: Merge the type-specific data with the payload data

2015-10-21 15:18:36 +01:00

kvm

KVM: arm/arm64: arch_timer: Preserve physical dist. active state on LR.active

2015-11-24 18:07:40 +01:00

linux

cpuidle: Do not access cpuidle_devices when !CONFIG_CPU_IDLE

2018-11-10 07:41:43 -08:00

math-emu

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media

media: v4l: event: Prevent freeing event subscriptions while accessed

2018-10-10 08:52:10 +02:00

memory

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misc

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net

ipv6: suppress sparse warnings in IP6_ECN_set_ce()

2018-11-10 07:41:34 -08:00

pcmcia

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ras

…

rdma

IB/core: Make testing MR flags for writability a static inline function

2018-08-15 17:42:06 +02:00

rxrpc

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scsi

scsi: Add STARGET_CREATED_REMOVE state to scsi_target_state

2018-11-10 07:41:37 -08:00

soc

memory: tegra: Apply interrupts mask per SoC

2018-08-06 16:24:38 +02:00

sound

ALSA: control: Hardening for potential Spectre v1

2018-05-02 07:53:41 -07:00

target

target: Avoid early CMD_T_PRE_EXECUTE failures during ABORT_TASK

2018-01-17 09:35:31 +01:00

trace

tracing/hrtimer: Fix tracing bugs by taking all clock bases and modes into account

2018-05-30 07:48:52 +02:00

uapi

ethtool: Remove trailing semicolon for static inline

2018-09-19 22:48:56 +02:00

video

udlfb: set optimal write delay

2018-09-09 20:04:36 +02:00

xen

fix xen_swiotlb_dma_mmap prototype

2017-10-05 09:41:48 +02:00

Kbuild

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