Konrad Rzeszutek Wilk c705c78c0d acpi: Export the acpi_processor_get_performance_info ... The git commit d5aaffa9dd (cpufreq: handle cpufreq being disabled for all exported function) tightens the cpufreq API by returning errors when disable_cpufreq() had been called. The problem we are hitting is that the module xen-acpi-processor which uses the ACPI's functions: acpi_processor_register_performance, acpi_processor_preregister_performance, and acpi_processor_notify_smm fails at acpi_processor_register_performance with -22. Note that earlier during bootup in arch/x86/xen/setup.c there is also an call to cpufreq's API: disable_cpufreq(). This is b/c we want the Linux kernel to parse the ACPI data, but leave the cpufreq decisions to the hypervisor. In v3.9 all the checks that d5aaffa9dd added are now hit and the calls to cpufreq_register_notifier will now fail. This means that acpi_processor_ppc_init ends up printing: "Warning: Processor Platform Limit not supported" and the acpi_processor_ppc_status is not set. The repercussions of that is that the call to acpi_processor_register_performance fails right away at: if (!(acpi_processor_ppc_status & PPC_REGISTERED)) and we don't progress any further on parsing and extracting the _P* objects. The only reason the Xen code called that function was b/c it was exported and the only way to gather the P-states. But we can also just make acpi_processor_get_performance_info be exported and not use acpi_processor_register_performance. This patch does so. Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>		2013-03-06 10:00:34 -05:00
..
acpi	acpi: Export the acpi_processor_get_performance_info	2013-03-06 10:00:34 -05:00
asm-generic	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal	2013-02-23 18:50:11 -08:00
clocksource	arm: arch_timer: add missing inline in stub function	2013-02-11 15:16:05 -08:00
crypto
drm	Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel	2013-01-11 07:52:48 +10:00
keys
linux	Merge tag 'kvm-3.9-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm	2013-02-24 13:07:18 -08:00
math-emu
media
memory
misc
net	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2013-02-21 17:40:58 -08:00
pcmcia
ras
rdma	UAPI: Remove empty Kbuild files	2013-01-02 17:36:10 -08:00
rxrpc
scsi
sound	ASoC: Final updates for v3.9	2013-02-16 15:48:48 +01:00
target	target: Introduce TCM_NO_SENSE	2013-01-10 20:06:08 -08:00
trace	Merge tag 'kvm-3.9-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm	2013-02-24 13:07:18 -08:00
uapi	Merge tag 'kvm-3.9-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm	2013-02-24 13:07:18 -08:00
video	video: s3c-fb: fix typo in definition of VIDCON1_VSTATUS_FRONTPORCH value	2013-02-21 17:22:18 -08:00
xen	xen: event channel arrays are xen_ulong_t and not unsigned long	2013-02-20 08:45:07 -05:00
Kbuild	UAPI: Remove empty Kbuild files	2013-01-02 17:36:10 -08:00