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be1fcde604
linux-next/arch/x86/kernel
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Rafael J. Wysocki be1fcde604 x86: intel_epb: Do not build when CONFIG_PM is unset 
Commit 9ed0985332 ("x86: intel_epb: Take CONFIG_PM into account")
prevented the majority of the Performance and Energy Bias Hint (EPB)
handling code from being built when CONFIG_PM is unset to fix a
regression introduced by commit b9c273babc ("PM / arch: x86:
MSR_IA32_ENERGY_PERF_BIAS sysfs interface").

In hindsight, however, it would be better to skip all of the EPB
handling code for CONFIG_PM unset as there really is no reason for
it to be there in that case.  Namely, if the EPB is not touched
by the kernel at all with CONFIG_PM unset, there is no need to
worry about modifying the EPB inadvertently on CPU online and since
the system will not suspend or hibernate then, there is no need to
worry about possible modifications of the EPB by the platform
firmware during system-wide PM transitions.

For this reason, revert the changes made by commit 9ed0985332
and only allow intel_epb.o to be built when CONFIG_PM is set.

Note that this changes the behavior of the kernels built with
CONFIG_PM unset as they will not modify the EPB on boot if it is
zero initially any more, so it is not a fix strictly speaking, but
users building their kernels with CONFIG_PM unset really should not
expect them to take energy efficiency into account.  Moreover, if
CONFIG_PM is unset for performance reasons, leaving EPB as set
initially by the platform firmware will actually be consistent
with the user's expectations.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
2019-05-30 10:58:36 +02:00
..
acpi treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
apic treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
cpu x86: intel_epb: Do not build when CONFIG_PM is unset 2019-05-30 10:58:36 +02:00
fpu treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
kprobes treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
.gitignore
alternative.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
amd_gart_64.c x86/dma: Remove the x86_dma_fallback_dev hack 2019-04-08 17:52:46 +02:00
amd_nb.c x86/amd_nb: Add PCI device IDs for family 17h, model 30h 2018-11-07 21:36:09 +01:00
apb_timer.c
aperture_64.c x86/gart: Exclude GART aperture from kcore 2019-03-23 12:11:49 +01:00
apm_32.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118 2019-05-24 17:39:02 +02:00
asm-offsets_32.c x86/entry/32: Load task stack from x86_tss.sp1 in SYSENTER handler 2018-07-20 01:11:36 +02:00
asm-offsets_64.c x86/irq/64: Split the IRQ stack into its own pages 2019-04-17 15:37:02 +02:00
asm-offsets.c x86/kernel: Fix more -Wmissing-prototypes warnings 2018-12-08 12:24:35 +01:00
audit_64.c
bootflag.c
check.c x86/headers: Fix -Wmissing-prototypes warning 2018-11-23 07:59:59 +01:00
cpuid.c x86/cpuid: Allow cpuid_read() to schedule 2018-03-27 12:01:48 +02:00
crash_dump_32.c
crash_dump_64.c x86: Fix various typos in comments 2018-12-03 10:49:13 +01:00
crash.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
devicetree.c x86/headers: Fix -Wmissing-prototypes warning 2018-11-23 07:59:59 +01:00
doublefault.c x86/entry: Fix assumptions that the HW TSS is at the beginning of cpu_tss 2017-12-17 13:59:55 +01:00
dumpstack_32.c x86/irq/32: Rename hard/softirq_stack to hard/softirq_stack_ptr 2019-04-17 15:24:18 +02:00
dumpstack_64.c x86/irq/64: Rename irq_stack_ptr to hardirq_stack_ptr 2019-04-17 15:27:10 +02:00
dumpstack.c x86/process: Don't mix user/kernel regs in 64bit __show_regs() 2018-09-06 14:33:12 +02:00
e820.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
early_printk.c efi/x86: Convert x86 EFI earlyprintk into generic earlycon implementation 2019-02-04 08:27:30 +01:00
early-quirks.c x86/gpu: add ElkhartLake to gen11 early quirks 2019-04-01 10:29:32 -07:00
ebda.c
eisa.c x86/EISA: Don't probe EISA bus for Xen PV guests 2018-09-11 23:36:50 +02:00
espfix_64.c x86/espfix: Document use of _PAGE_GLOBAL 2018-04-09 18:27:33 +02:00
ftrace_32.S ftrace/x86: Remove mcount support 2019-05-10 12:33:09 -04:00
ftrace_64.S ftrace/x86: Remove mcount support 2019-05-10 12:33:09 -04:00
ftrace.c The major changes in this tracing update includes: 2019-05-15 16:05:47 -07:00
head32.c x86/boot: Mostly revert commit ae7e1238e6 ("Add ACPI RSDP address to setup_header") 2018-11-20 09:43:10 +01:00
head64.c x86/boot: Mostly revert commit ae7e1238e6 ("Add ACPI RSDP address to setup_header") 2018-11-20 09:43:10 +01:00
head_32.S x86/pgtable/32: Allocate 8k page-tables when PTI is enabled 2018-07-20 01:11:41 +02:00
head_64.S x86/irq/64: Split the IRQ stack into its own pages 2019-04-17 15:37:02 +02:00
hpet.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
hw_breakpoint.c x86/hw_breakpoints: Make default case in hw_breakpoint_arch_parse() return an error 2019-03-22 17:08:17 +01:00
i8237.c x86/i8237: Register device based on FADT legacy boot flag 2018-04-27 16:44:29 +02:00
i8253.c
i8259.c x86: Don't include linux/irq.h from asm/hardirq.h 2018-08-05 09:53:13 +02:00
idt.c x86/exceptions: Disconnect IST index and stack order 2019-04-17 15:01:09 +02:00
ima_arch.c x86/ima: add missing include 2019-04-10 16:41:00 -04:00
io_delay.c
ioport.c x86/ioport: add ksys_ioperm() helper; remove in-kernel calls to sys_ioperm() 2018-04-02 20:16:12 +02:00
irq_32.c x86/irq/32: Handle irq stack allocation failure proper 2019-04-17 15:31:42 +02:00
irq_64.c x86/irq/64: Remove stack overflow debug code 2019-04-17 15:41:48 +02:00
irq_work.c
irq.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
irqflags.S x86/paravirt: Make native_save_fl() extern inline 2018-07-03 10:56:27 +02:00
irqinit.c x86/irq/32: Handle irq stack allocation failure proper 2019-04-17 15:31:42 +02:00
itmt.c x86/headers: Remove duplicate #includes 2017-12-12 11:32:24 +01:00
jailhouse.c x86/headers: Fix -Wmissing-prototypes warning 2018-11-23 07:59:59 +01:00
jump_label.c x86/jump-label: Remove support for custom text poker 2019-04-30 12:37:55 +02:00
kdebugfs.c
kexec-bzimage64.c Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2019-03-10 17:32:04 -07:00
kgdb.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118 2019-05-24 17:39:02 +02:00
ksysfs.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
kvm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 19 2019-05-21 11:28:46 +02:00
kvmclock.c x86: kvmguest: use TSC clocksource if invariant TSC is exposed 2019-02-20 22:48:52 +01:00
ldt.c x86: Convert some slow-path static_cpu_has() callers to boot_cpu_has() 2019-04-08 12:13:34 +02:00
livepatch.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
machine_kexec_32.c x86/kexec: Allocate 8k PGDs for PTI 2018-07-30 13:53:48 +02:00
machine_kexec_64.c x86/kdump: Export the SME mask to vmcoreinfo 2019-01-11 16:09:25 +01:00
Makefile treewide: prefix header search paths with $(srctree)/ 2019-05-18 11:49:57 +09:00
mmconf-fam10h_64.c
module.c x86/modules: Avoid breaking W^X while loading modules 2019-04-30 12:37:55 +02:00
mpparse.c x86/mm: Don't leak kernel addresses 2019-03-19 12:10:56 +01:00
msr.c x86: Clean up 'sizeof x' => 'sizeof(x)' 2018-10-29 07:13:28 +01:00
nmi_selftest.c
nmi.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
paravirt_patch_32.c x86/paravirt: Remove unused _paravirt_ident_32 2018-10-30 09:55:31 +01:00
paravirt_patch_64.c x86/paravirt: Remove unused _paravirt_ident_32 2018-10-30 09:55:31 +01:00
paravirt-spinlocks.c x86/paravirt: Use a single ops structure 2018-09-03 16:50:35 +02:00
paravirt.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 102 2019-05-24 17:39:00 +02:00
pci-calgary_64.c x86/calgary: remove the mapping_error dma_map_ops method 2018-12-06 06:56:46 -08:00
pci-dma.c x86/dma: Remove the x86_dma_fallback_dev hack 2019-04-08 17:52:46 +02:00
pci-iommu_table.c x86/iommu: Use NULL instead of 0 2018-08-02 14:33:19 +02:00
pci-swiotlb.c dma-direct: merge swiotlb_dma_ops into the dma_direct code 2018-12-13 21:06:17 +01:00
pcspeaker.c x86/platform/pcspeaker: Use PTR_ERR_OR_ZERO() to fix ptr_ret.cocci warning 2018-07-24 09:46:42 +02:00
perf_regs.c perf/x86: Support outputting XMM registers 2019-04-16 12:19:36 +02:00
platform-quirks.c x86/i8237: Register device based on FADT legacy boot flag 2018-04-27 16:44:29 +02:00
pmem.c
probe_roms.c
process_32.c Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-07 10:24:10 -07:00
process_64.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
process.c Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-07 10:24:10 -07:00
process.h x86/speculation: Change misspelled STIPB to STIBP 2018-12-06 11:49:15 +01:00
ptrace.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
pvclock.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 102 2019-05-24 17:39:00 +02:00
quirks.c x86/headers: Fix -Wmissing-prototypes warning 2018-11-23 07:59:59 +01:00
reboot_fixups_32.c
reboot.c Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-06 15:32:35 -07:00
relocate_kernel_32.S
relocate_kernel_64.S x86/kexec: Make kexec (mostly) work in 5-level paging mode 2018-01-31 08:39:40 +01:00
resource.c
rtc.c x86: Convert x86_platform_ops to timespec64 2018-05-19 14:03:14 +02:00
setup_percpu.c x86/irq/64: Split the IRQ stack into its own pages 2019-04-17 15:37:02 +02:00
setup.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
signal_compat.c signal: Add TRAP_UNK si_code for undiagnosted trap exceptions 2018-04-25 10:40:56 -05:00
signal.c Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-07 10:24:10 -07:00
smp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 82 2019-05-24 17:37:52 +02:00
smpboot.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 82 2019-05-24 17:37:52 +02:00
stacktrace.c x86/stacktrace: Use common infrastructure 2019-04-29 12:37:57 +02:00
step.c
sys_x86_64.c x86/compat: Adjust in_compat_syscall() to generic code under !COMPAT 2018-11-01 12:59:25 +01:00
sysfb_efi.c x86/kernel: Fix more -Wmissing-prototypes warnings 2018-12-08 12:24:35 +01:00
sysfb_simplefb.c
sysfb.c
tboot.c iommu/vtd: Cleanup dma_remapping.h header 2018-11-12 14:22:56 +01:00
tce_64.c mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
time.c Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 19:07:25 +01:00
tls.c x86/ldt: Make the LDT mapping RO 2017-12-23 21:13:01 +01:00
tls.h
topology.c x86/topology: Make DEBUG_HOTPLUG_CPU0 pr_info() more descriptive 2019-04-19 19:42:57 +02:00
trace_clock.c
tracepoint.c x86/kernel: Fix more -Wmissing-prototypes warnings 2018-12-08 12:24:35 +01:00
traps.c x86/speculation/mds: Revert CPU buffer clear on double fault exit 2019-05-16 09:05:11 +02:00
tsc_msr.c x86/cpu: Sanitize FAM6_ATOM naming 2018-10-02 10:14:32 +02:00
tsc_sync.c Merge branch 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-11-13 19:07:38 -08:00
tsc.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
umip.c signal/x86: Use force_sig_fault where appropriate 2018-09-21 15:30:54 +02:00
unwind_frame.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
unwind_guess.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
unwind_orc.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
uprobes.c x86/kernel: Mark expected switch-case fall-throughs 2019-01-26 11:19:13 +01:00
verify_cpu.S
vm86_32.c x86: Convert some slow-path static_cpu_has() callers to boot_cpu_has() 2019-04-08 12:13:34 +02:00
vmlinux.lds.S Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-05-06 16:13:31 -07:00
vsmp_64.c x86/vsmp: Remove dependency on pv_irq_ops 2018-11-06 21:35:11 +01:00
x86_init.c x86/acpi, x86/boot: Take RSDP address for boot params if available 2018-10-10 10:44:22 +02:00