Daniel Lezcano
4c637b2175
cpuidle: make a single register function for all ...
The usual scheme to initialize a cpuidle driver on a SMP is:
cpuidle_register_driver(drv);
for_each_possible_cpu(cpu) {
device = &per_cpu(cpuidle_dev, cpu);
cpuidle_register_device(device);
}
This code is duplicated in each cpuidle driver.
On UP systems, it is done this way:
cpuidle_register_driver(drv);
device = &per_cpu(cpuidle_dev, cpu);
cpuidle_register_device(device);
On UP, the macro 'for_each_cpu' does one iteration:
#define for_each_cpu(cpu, mask) \
for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)mask)
Hence, the initialization loop is the same for UP than SMP.
Beside, we saw different bugs / mis-initialization / return code unchecked in
the different drivers, the code is duplicated including bugs. After fixing all
these ones, it appears the initialization pattern is the same for everyone.
Please note, some drivers are doing dev->state_count = drv->state_count. This is
not necessary because it is done by the cpuidle_enable_device function in the
cpuidle framework. This is true, until you have the same states for all your
devices. Otherwise, the 'low level' API should be used instead with the specific
initialization for the driver.
Let's add a wrapper function doing this initialization with a cpumask parameter
for the coupled idle states and use it for all the drivers.
That will save a lot of LOC, consolidate the code, and the modifications in the
future could be done in a single place. Another benefit is the consolidation of
the cpuidle_device variable which is now in the cpuidle framework and no longer
spread accross the different arch specific drivers.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-23 13:45:22 +02:00
Merge branch 'acpi-lpss' into linux-next
2013-04-08 12:31:30 +02:00
doc: Remove unnecessary declarations from Documentation/accounting/getdelays.c
2012-11-26 14:22:21 +01:00
ACPI / Documentation: refer to correct file for acpi_platform_device_ids[] table
2013-02-13 13:43:02 +01:00
aoe: allow user to disable target failure timeout
2012-12-17 17:15:25 -08:00
fbdev changes for 3.8:
2012-12-15 13:03:48 -08:00
arm64: Add simple earlyprintk support
2013-01-22 17:51:01 +00:00
backlight: lp855x_bl: support new LP8557 device
2013-02-21 17:22:25 -08:00
cfq-iosched: enable full blkcg hierarchy support
2013-01-09 08:05:11 -08:00
nbd: update documentation and link to mailinglist
2013-02-27 19:10:22 -08:00
Merge branch 'for-3.9/core' of git://git.kernel.dk/linux-block
2013-02-28 12:52:24 -08:00
cpufreq: Update Documentation for cpus and related_cpus
2013-02-02 00:01:16 +01:00
cpuidle: make a single register function for all
2013-04-23 13:45:22 +02:00
md updates for 3.9
2013-03-05 17:22:08 -08:00
This is the first batch of MFD fixes for 3.9.
2013-03-15 17:34:01 -07:00
Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
2013-02-25 16:46:44 -08:00
lib: devres: Introduce devm_ioremap_resource()
2013-01-22 09:41:43 -08:00
[media] get_dvb_firmware: Fix the location of firmware for Terratec HTC
2013-01-01 11:18:26 -02:00
drm: Load EDID: Explain better how to write your own EDID firmware
2013-01-20 19:22:19 +10:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2013-02-26 20:16:07 -08:00
HID: remove x bit from sensor doc
2012-12-14 08:48:59 +01:00
hwmon: (lm75) Fix tcn75 prefix
2013-03-18 21:19:49 +01:00
i2c: Fix my e-mail address in drivers and documentation
2013-03-22 11:18:34 +01:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2013-03-11 07:49:37 -07:00
wanrouter: completely decouple obsolete code from kernel.
2013-01-31 19:20:33 -05:00
Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2013-02-27 12:28:30 -08:00
Documentation/laptops: remove depends on CONFIG_EXPERIMENTAL
2013-01-21 14:52:42 -08:00
Documentation: leds: update LP55xx family devices
2013-02-06 15:59:30 -08:00
metag: Basic documentation
2013-03-02 20:09:50 +00:00
mmc: core: Extend sysfs to ext_csd parameters for RPMB support
2012-12-06 13:54:48 -05:00
userns: Recommend use of memory control groups.
2013-01-26 22:20:06 -08:00
ipvs: add backup_only flag to avoid loops
2013-03-19 21:21:51 +09:00
NFC: Update pn544 documentation
2013-01-10 01:27:46 +01:00
PCI/MSI: Enable multiple MSIs with pci_enable_msi_block_auto()
2013-01-24 17:25:13 +01:00
PM / OPP: improve introductory documentation
2013-03-04 14:23:11 +01:00
powerpc: Documentation for transactional memory on powerpc
2013-02-15 17:02:25 +11:00
[SCSI] megaraid_sas: Version and Changelog update
2013-02-22 15:37:15 +00:00
Documentation: fix Documentation/security/00-INDEX
2012-12-17 17:15:22 -08:00
tty: Update serial core API documentation
2013-01-15 21:57:44 -08:00
Revert "ALSA: hda - Allow power_save_controller option override DCAPS"
2013-04-04 15:35:39 +02:00
Documentation: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
Documentation/sysctl/kernel.txt: document /proc/sys/shmall
2013-01-04 16:11:46 -08:00
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
2013-02-28 19:48:26 -08:00
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-03-11 07:54:29 -07:00
[media] radio-si470x doc: add info about v4l2-ctl and sox+alsa
2013-02-13 17:33:20 -02:00
Merge tag 'kvm-3.9-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2013-02-24 13:07:18 -08:00
ksm: add some comments
2013-02-23 17:50:23 -08:00
w1: w1_therm: Add force-pullup option for "broken" sensors
2013-02-18 13:55:24 -08:00
watchdog: core: dt: add support for the timeout-sec dt property
2013-03-01 12:48:36 +01:00
Merge branch 'x86/microcode' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2013-02-22 19:22:52 -08:00
xtensa: initialize atomctl SR
2012-12-18 21:10:22 -08:00
Driver core patches for 3.9-rc1
2013-02-21 12:05:51 -08:00
ImgTec Meta architecture changes for v3.9-rc1
2013-03-03 12:06:09 -08:00
Documentation: Memory barrier semantics of atomic_xchg()
2013-01-08 14:14:55 -08:00
coccicheck: Allow the user to give a V= (verbose) argument
2013-02-22 11:39:13 +01:00
Documentation: remove depends on CONFIG_EXPERIMENTAL
2013-01-11 11:38:03 -08:00
Documentation/DMA-API-HOWTO.txt: fix typo
2013-02-27 19:10:23 -08:00
common: DMA-mapping: add DMA_ATTR_FORCE_CONTIGUOUS attribute
2012-11-29 03:30:34 -08:00
dma-buf: implement vmap refcounting in the interface logic
2013-02-27 15:13:36 +05:30
dynamic_debug: dynamic hex dump
2013-01-17 12:19:09 -08:00
HOWTO: fix double words typo
2012-12-10 15:54:27 +01:00
Documentation: remove depends on CONFIG_EXPERIMENTAL
2013-01-11 11:38:03 -08:00
ipmi: add options to disable openfirmware and PCI scanning
2013-02-27 19:10:21 -08:00
irqdomain: update documentation
2012-12-05 23:52:10 +00:00
Kernel-doc: Convention: Use a "Return" section to describe return values
2012-11-27 21:08:57 +01:00
ImgTec Meta architecture changes for v3.9-rc1
2013-03-03 12:06:09 -08:00
kref: Add kref_get_unless_zero documentation
2012-11-28 18:36:06 +10:00
locking/stat: Fix a typo
2013-02-19 08:42:37 +01:00
wanrouter: completely decouple obsolete code from kernel.
2013-01-31 19:20:33 -05:00
[media] Documentation/media-framework.txt: fix a sentence
2013-02-08 13:27:13 -02:00
Documentation: Memory barrier semantics of atomic_xchg()
2013-01-08 14:14:55 -08:00
hotplug: update nodemasks management
2012-12-12 17:38:33 -08:00
drivers/pinctrl: grab default handles from device core
2013-01-23 16:39:51 +01:00
Randy has moved
2013-03-08 15:05:34 -08:00
Documentation: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
Documentation/sparse.txt: document context annotations for lock checking
2012-12-17 17:15:23 -08:00
Randy has moved
2013-03-08 15:05:34 -08:00
4c637b2175
