Borislav Petkov 93789b32db x86, hotplug: Fix powersavings with offlined cores on AMD ... ea53069231 made a CPU use monitor/mwait when offline. This is not the optimal choice for AMD wrt to powersavings and we'd prefer our cores to halt (i.e. enter C1) instead. For this, the same selection whether to use monitor/mwait has to be used as when we select the idle routine for the machine. With this patch, offlining cores 1-5 on a X6 machine allows core0 to boost again. [ hpa: putting this in urgent since it is a (power) regression fix ] Reported-by: Andreas Herrmann <andreas.herrmann3@amd.com> Cc: stable@kernel.org # 37.x Cc: H. Peter Anvin <hpa@linux.intel.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Len Brown <lenb@kernel.org> Cc: Venkatesh Pallipadi <venki@google.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.hl> Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> LKML-Reference: <1295534572-10730-1-git-send-email-bp@amd64.org> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>		2011-01-21 18:14:54 -08:00
..
acpi	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6	2011-01-13 20:15:35 -08:00
apic	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2011-01-11 11:11:46 -08:00
cpu	x86, mcheck, therm_throt.c: Export symbol platform_thermal_notify to allow coretemp to handler intr	2011-01-21 14:11:12 +01:00
.gitignore	…
Makefile	Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2011-01-06 11:06:31 -08:00
alternative.c	Merge branches 'x86-alternatives-for-linus', 'x86-fpu-for-linus', 'x86-hwmon-for-linus', 'x86-paravirt-for-linus', 'core-locking-for-linus' and 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2011-01-06 11:11:50 -08:00
amd_iommu.c	tree-wide: fix comment/printk typos	2010-11-01 15:38:34 -04:00
amd_iommu_init.c	Merge branch 'x86-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-10-21 14:23:48 -07:00
amd_nb.c	x86: Use PCI method for enabling AMD extended config space before MSR method	2011-01-11 12:43:41 +01:00
apb_timer.c	x86, mrst: Set correct APB timer IRQ affinity for secondary cpu	2011-01-14 11:53:44 -08:00
aperture_64.c	x86: Use PCI method for enabling AMD extended config space before MSR method	2011-01-11 12:43:41 +01:00
apm_32.c	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-10-24 13:41:39 -07:00
asm-offsets.c	…
asm-offsets_32.c	x86, asm: Fix CFI macro invocations to deal with shortcomings in gas	2010-10-19 14:28:02 -07:00
asm-offsets_64.c	…
audit_64.c	…
bootflag.c	…
check.c	…
cpuid.c	BKL: remove extraneous #include <smp_lock.h>	2010-11-17 08:59:32 -08:00
crash.c	…
crash_dump_32.c	mm: stack based kmap_atomic()	2010-10-26 16:52:08 -07:00
crash_dump_64.c	…
doublefault_32.c	…
dumpstack.c	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6	2011-01-13 20:15:35 -08:00
dumpstack_32.c	x86: Eliminate bp argument from the stack tracing routines	2010-11-18 14:37:34 +01:00
dumpstack_64.c	x86: Eliminate bp argument from the stack tracing routines	2010-11-18 14:37:34 +01:00
e820.c	PM / ACPI: Move NVS saving and restoring code to drivers/acpi	2011-01-07 00:36:55 -05:00
early-quirks.c	Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-10-21 13:18:06 -07:00
early_printk.c	x86, earlyprintk: Move mrst early console to platform/ and fix a typo	2010-12-06 20:52:04 +01:00
entry_32.S	KVM: Handle async PF in a guest.	2011-01-12 11:23:16 +02:00
entry_64.S	Merge branch 'kvm-updates/2.6.38' of git://git.kernel.org/pub/scm/virt/kvm/kvm	2011-01-13 10:14:24 -08:00
ftrace.c	Merge branch 'for-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2011-01-07 17:02:58 -08:00
head.c	…
head32.c	x86: Add CE4100 platform support	2010-11-12 00:45:41 +01:00
head64.c	x86-64: Only set max_pfn_mapped to 512 MiB if we enter via head_64.S	2010-10-14 09:06:49 +02:00
head_32.S	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2011-01-13 10:05:56 -08:00
head_64.S	…
hpet.c	x86: HPET: Chose a paranoid safe value for the ETIME check	2010-12-13 13:42:44 +01:00
hw_breakpoint.c	x86: Use this_cpu_ops to optimize code	2010-12-30 12:20:28 +01:00
i386_ksyms_32.c	…
i387.c	KVM: Initialize fpu state in preemptible context	2011-01-12 12:02:26 +02:00
i8237.c	…
i8253.c	…
i8259.c	x86: i8259: Convert to new irq_chip functions	2010-10-12 16:53:36 +02:00
init_task.c	…
io_delay.c	…
ioport.c	…
irq.c	Merge branch 'x86-olpc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2011-01-13 10:15:12 -08:00
irq_32.c	Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2011-01-18 14:29:21 -08:00
irq_64.c	…
irq_work.c	irq_work: Add generic hardirq context callbacks	2010-10-18 19:58:50 +02:00
irqinit.c	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-10-21 14:11:46 -07:00
jump_label.c	…
kdebugfs.c	llseek: automatically add .llseek fop	2010-10-15 15:53:27 +02:00
kgdb.c	x86, NMI: Remove DIE_NMI_IPI	2011-01-07 15:08:53 +01:00
kprobes.c	Merge branch 'for-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2011-01-07 17:02:58 -08:00
kvm.c	KVM guest: Fix kvm clock initialization when it's configured out	2011-01-12 11:30:56 +02:00
kvmclock.c	KVM paravirt: Move kvm_smp_prepare_boot_cpu() from kvmclock.c to kvm.c.	2011-01-12 11:23:10 +02:00
ldt.c	…
machine_kexec_32.c	…
machine_kexec_64.c	…
mca_32.c	…
microcode_amd.c	Merge branch 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2011-01-06 11:06:09 -08:00
microcode_core.c	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-10-24 13:41:39 -07:00
microcode_intel.c	x86/microcode: Fix double vfree() and remove redundant pointer checks before vfree()	2010-12-27 14:33:30 +01:00
mmconf-fam10h_64.c	x86-64: Fix and clean up AMD Fam10 MMCONF enabling	2010-11-18 13:41:35 +01:00
module.c	mm: unify module_alloc code for vmalloc	2011-01-13 17:32:34 -08:00
mpparse.c	x86: Further simplify mp_irq info handling	2010-12-09 21:52:06 +01:00
msr.c	BKL: remove extraneous #include <smp_lock.h>	2010-11-17 08:59:32 -08:00
paravirt-spinlocks.c	…
paravirt.c	thp: add pmd paravirt ops	2011-01-13 17:32:39 -08:00
paravirt_patch_32.c	…
paravirt_patch_64.c	…
pci-calgary_64.c	…
pci-dma.c	…
pci-gart_64.c	x86, amd-nb: Cleanup AMD northbridge caching code	2010-11-18 15:53:05 +01:00
pci-iommu_table.c	…
pci-nommu.c	…
pci-swiotlb.c	…
pcspeaker.c	…
probe_roms_32.c	…
process.c	x86, hotplug: Fix powersavings with offlined cores on AMD	2011-01-21 18:14:54 -08:00
process_32.c	cpuidle/x86/perf: fix power:cpu_idle double end events and throw cpu_idle events from the cpuidle layer	2011-01-12 18:05:16 -05:00
process_64.c	cpuidle/x86/perf: fix power:cpu_idle double end events and throw cpu_idle events from the cpuidle layer	2011-01-12 18:05:16 -05:00
ptrace.c	ptrace: cleanup arch_ptrace() on x86	2010-10-27 18:03:10 -07:00
pvclock.c	x86/pvclock: Zero last_value on resume	2010-11-28 09:33:20 +01:00
quirks.c	…
reboot.c	x86, NMI: Remove DIE_NMI_IPI	2011-01-07 15:08:53 +01:00
reboot_fixups_32.c	x86: Ce4100: Add reboot_fixup() for CE4100	2010-11-12 00:45:41 +01:00
relocate_kernel_32.S	…
relocate_kernel_64.S	…
resource.c	x86: avoid high BIOS area when allocating address space	2010-12-17 10:01:30 -08:00
rtc.c	set_rtc_mmss: show warning message only once	2011-01-13 08:03:07 -08:00
setup.c	Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2011-01-06 10:51:36 -08:00
setup_percpu.c	Merge branch 'core-memblock-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-10-21 18:52:11 -07:00
signal.c	…
smp.c	x86, kexec: Make sure to stop all CPUs before exiting the kernel	2010-10-21 13:30:44 -07:00
smpboot.c	x86, hotplug: Fix powersavings with offlined cores on AMD	2011-01-21 18:14:54 -08:00
stacktrace.c	x86: Eliminate bp argument from the stack tracing routines	2010-11-18 14:37:34 +01:00
step.c	…
sys_i386_32.c	…
sys_x86_64.c	…
syscall_64.c	…
syscall_table_32.S	…
tboot.c	thp: pte alloc trans splitting	2011-01-13 17:32:40 -08:00
tce_64.c	…
test_nx.c	…
test_rodata.c	…
time.c	x86, nmi_watchdog: Remove all stub function calls from old nmi_watchdog	2010-11-18 09:08:23 +01:00
tls.c	…
tls.h	…
topology.c	…
trampoline.c	Merge branch 'x86-trampoline-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-10-22 20:37:50 -07:00
trampoline_32.S	…
trampoline_64.S	x86, cpu: Rename verify_cpu_64.S to verify_cpu.S	2010-11-10 15:42:42 -08:00
traps.c	x86, NMI: Clean-up default_do_nmi()	2011-01-07 15:08:53 +01:00
tsc.c	Merge branches 'core-fixes-for-linus', 'x86-fixes-for-linus', 'timers-fixes-for-linus' and 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2011-01-15 12:45:00 -08:00
tsc_sync.c	…
verify_cpu.S	x86: Fix included-by file reference comments	2010-11-18 09:58:54 +01:00
vm86_32.c	thp: split_huge_page_mm/vma	2011-01-13 17:32:41 -08:00
vmlinux.lds.S	Revert "x86: Make relocatable kernel work with new binutils"	2011-01-19 10:09:42 +01:00
vsmp_64.c	…
vsyscall_64.c	…
x86_init.c	x86: Introduce x86_msi_ops	2010-10-18 10:49:34 -04:00
x8664_ksyms_64.c	…
xsave.c	x86, xsave: Use alloc_bootmem_align() instead of alloc_bootmem()	2010-12-13 16:13:11 -08:00