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alistair23-linux/arch/x86/kernel
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Vikas Shivappa edf6fa1c4a x86/intel_rdt/cqm: Add RMID (Resource monitoring ID) management 
Hardware uses RMID(Resource monitoring ID) to keep track of each of the
RDT events associated with tasks. The number of RMIDs is dependent on
the SKU and is enumerated via CPUID. We add support to manage the RMIDs
which include managing the RMID allocation and reading LLC occupancy
for an RMID.

RMID allocation is managed by keeping a free list which is initialized
to all available RMIDs except for RMID 0 which is always reserved for
root group. RMIDs goto a limbo list once they are
freed since the RMIDs are still tagged to cache lines of the tasks which
were using them - thereby still having some occupancy. They continue to
be in limbo list until the occupancy < threshold_occupancy. The
threshold_occupancy is a user configurable value.
OS uses IA32_QM_CTR MSR to read the occupancy associated with an RMID
after programming the IA32_EVENTSEL MSR with the RMID.

[Tony: Improved limbo search]

Signed-off-by: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: ravi.v.shankar@intel.com
Cc: tony.luck@intel.com
Cc: fenghua.yu@intel.com
Cc: peterz@infradead.org
Cc: eranian@google.com
Cc: vikas.shivappa@intel.com
Cc: ak@linux.intel.com
Cc: davidcc@google.com
Cc: reinette.chatre@intel.com
Link: http://lkml.kernel.org/r/1501017287-28083-10-git-send-email-vikas.shivappa@linux.intel.com
2017-08-01 22:41:21 +02:00
..
acpi x86/acpi: Prevent out of bound access caused by broken ACPI tables 2017-07-20 10:27:59 +02:00
apic x86/ioapic: Pass the correct data to unmask_ioapic_irq() 2017-07-20 10:28:10 +02:00
cpu x86/intel_rdt/cqm: Add RMID (Resource monitoring ID) management 2017-08-01 22:41:21 +02:00
fpu KVM: x86: Fix load damaged SSEx MXCSR register 2017-05-15 16:08:56 +02:00
kprobes kprobes/x86: Release insn_slot in failure path 2017-07-24 11:14:59 +02:00
.gitignore
alternative.c x86/alternatives: Prevent uninitialized stack byte read in apply_alternatives() 2017-05-24 16:18:12 +02:00
amd_gart_64.c x86: remove arch specific dma_supported implementation 2017-06-28 06:54:46 -07:00
amd_nb.c
apb_timer.c Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-12-25 14:30:04 -08:00
aperture_64.c x86/boot/e820: Prefix the E820_* type names with "E820_TYPE_" 2017-01-28 22:55:22 +01:00
apm_32.c x86: Remap GDT tables in the fixmap section 2017-03-16 09:06:35 +01:00
asm-offsets.c efi: Get and store the secure boot status 2017-02-07 10:42:10 +01:00
asm-offsets_32.c
asm-offsets_64.c x86/kvm: Provide optimized version of vcpu_is_preempted() for x86-64 2017-02-21 12:48:35 +01:00
audit_64.c
bootflag.c
check.c
cpuid.c Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-12-12 19:25:04 -08:00
crash.c kexec: move vmcoreinfo out of the kernel's .bss section 2017-07-12 16:25:59 -07:00
crash_dump_32.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
crash_dump_64.c
devicetree.c x86/devicetree: Convert to using %pOF instead of ->full_name 2017-07-21 10:14:15 +02:00
doublefault.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h> 2017-03-02 08:42:34 +01:00
dumpstack.c x86/unwind: Ensure stack pointer is aligned 2017-04-18 10:30:23 +02:00
dumpstack_32.c x86/debug: Implement __WARN() using UD0 2017-03-27 10:20:28 +02:00
dumpstack_64.c x86/debug: Implement __WARN() using UD0 2017-03-27 10:20:28 +02:00
e820.c x86/boot/e820: Introduce the bootloader provided e820_table_firmware[] table 2017-07-05 10:09:02 +02:00
early-quirks.c main drm pull request for 4.12 kernel 2017-05-03 11:44:24 -07:00
early_printk.c x86/earlyprintk: Add support for earlyprintk via USB3 debug port 2017-03-21 12:30:16 +01:00
ebda.c
espfix_64.c x86/boot/64: Rename init_level4_pgt and early_level4_pgt 2017-06-13 08:56:55 +02:00
ftrace.c x86/ftrace: Make sure that ftrace trampolines are not RWX 2017-05-26 22:37:02 -04:00
ftrace_32.S x86/ftrace: Fix ebp in ftrace_regs_caller that screws up unwinder 2017-04-21 09:48:16 +02:00
ftrace_64.S x86/ftrace: Use Makefile logic instead of #ifdef for compiling ftrace_*.o 2017-03-24 10:14:08 +01:00
head32.c x86/boot/e820: Move asm/e820.h to asm/e820/api.h 2017-01-28 09:31:13 +01:00
head64.c x86/boot/64: Put __startup_64() into .head.text 2017-06-20 12:56:27 +02:00
head_32.S x86/boot/32: Convert the 32-bit pgtable setup code from assembly to C 2017-01-06 08:39:26 +01:00
head_64.S x86/boot/64: Add support of additional page table level during early boot 2017-06-13 08:56:55 +02:00
hpet.c x86/hpet: Do not use smp_processor_id() in preemptible code 2017-06-20 12:23:26 +02:00
hw_breakpoint.c
i8237.c
i8253.c
i8259.c x86: i8259: export legacy_pic symbol 2017-04-14 12:08:51 +02:00
io_delay.c
ioport.c Second batch of KVM changes for 4.11 merge window 2017-03-04 11:36:19 -08:00
irq.c x86: irq: Define a global vector for nested posted interrupts 2017-07-26 18:57:45 +02:00
irq_32.c
irq_64.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
irq_work.c x86/irq, trace: Add __irq_entry annotation to x86's platform IRQ handlers 2017-01-05 08:58:49 +01:00
irqinit.c x86: irq: Define a global vector for nested posted interrupts 2017-07-26 18:57:45 +02:00
itmt.c sched/x86: Remove unnecessary TBM3 check to update topology 2017-01-19 08:42:37 +01:00
jump_label.c jump_label: Reorder hotplug lock and jump_label_lock 2017-05-26 10:10:45 +02:00
kdebugfs.c x86/kdebugfs: Move boot params hierarchy under (debugfs)/x86/ 2017-03-01 09:57:02 +01:00
kexec-bzimage64.c x86/boot/e820: Rename the e820_table_firmware to e820_table_kexec 2017-07-05 10:09:02 +02:00
kgdb.c
ksysfs.c
kvm.c KVM: async_pf: Let guest support delivery of async_pf from guest mode 2017-07-14 14:26:16 +02:00
kvmclock.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h> 2017-03-02 08:42:27 +01:00
ldt.c x86/ldt: Rename ldt_struct::size to ::nr_entries 2017-06-08 09:28:21 +02:00
livepatch.c
machine_kexec_32.c x86: use set_memory.h header 2017-05-08 17:15:13 -07:00
machine_kexec_64.c x86/boot/64: Rename init_level4_pgt and early_level4_pgt 2017-06-13 08:56:55 +02:00
Makefile Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-07-03 14:45:09 -07:00
mmconf-fam10h_64.c
module.c mm, vmalloc: use __GFP_HIGHMEM implicitly 2017-05-08 17:15:13 -07:00
mpparse.c x86/boot/e820: Rename early_reserve_e820() to e820__memblock_alloc() and document it 2017-01-28 14:42:30 +01:00
msr.c x86/msr: Remove bogus cleanup from the error path 2016-12-25 10:47:41 +01:00
nmi.c * An EDAC driver for Cavium ThunderX RAS IP (Sergey Temerkhanov) 2017-05-01 11:36:00 -07:00
nmi_selftest.c x86/nmi: Fix timeout test in test_nmi_ipi() 2017-06-20 12:52:43 +02:00
paravirt-spinlocks.c 4.11 is going to be a relatively large release for KVM, with a little over 2017-02-22 18:22:53 -08:00
paravirt.c x86/mm: Split read_cr3() into read_cr3_pa() and __read_cr3() 2017-06-13 08:48:09 +02:00
paravirt_patch_32.c x86/paravirt: Mark unused patch_default label 2016-12-22 17:43:35 +01:00
paravirt_patch_64.c x86/paravirt: Mark unused patch_default label 2016-12-22 17:43:35 +01:00
pci-calgary_64.c x86: remove arch specific dma_supported implementation 2017-06-28 06:54:46 -07:00
pci-dma.c x86: remove arch specific dma_supported implementation 2017-06-28 06:54:46 -07:00
pci-iommu_table.c
pci-nommu.c x86: remove arch specific dma_supported implementation 2017-06-28 06:54:46 -07:00
pci-swiotlb.c treewide: Constify most dma_map_ops structures 2017-01-24 12:23:35 -05:00
pcspeaker.c
perf_regs.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
platform-quirks.c x86/init: Add i8042 state to the platform data 2016-12-19 11:34:15 +01:00
pmem.c
probe_roms.c x86/boot/e820: Move asm/e820.h to asm/e820/api.h 2017-01-28 09:31:13 +01:00
process.c arch: remove unused macro/function thread_saved_pc() 2017-06-28 16:13:57 -07:00
process_32.c x86/intel_rdt: Change file names to accommodate RDT monitor code 2017-08-01 22:41:19 +02:00
process_64.c x86/intel_rdt: Change file names to accommodate RDT monitor code 2017-08-01 22:41:19 +02:00
ptrace.c x86/arch_prctl/64: Rename do_arch_prctl() to do_arch_prctl_64() 2017-03-20 16:10:32 +01:00
pvclock.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/nmi.h> 2017-03-02 08:42:30 +01:00
quirks.c
reboot.c x86/efi: Fix reboot_mode when EFI runtime services are disabled 2017-07-25 11:30:45 +02:00
reboot_fixups_32.c
relocate_kernel_32.S
relocate_kernel_64.S
resource.c x86/boot/e820: Harmonize the 'struct e820_table' fields 2017-01-28 09:33:16 +01:00
rtc.c timekeeping: Ignore the bogus sleep time if pm_trace is enabled 2016-11-29 18:02:58 +01:00
setup.c x86/mm/pat: Don't report PAT on CPUs that don't support it 2017-07-05 09:01:24 +02:00
setup_percpu.c x86/boot/32: Fix UP boot on Quark and possibly other platforms 2017-05-09 08:14:24 +02:00
signal.c x86/debug: Fix the printk() debug output of signal_fault(), do_trap() and do_general_protection() 2017-04-11 09:11:13 +02:00
signal_compat.c x86/signals: Fix lower/upper bound reporting in compat siginfo 2017-04-05 10:16:43 +02:00
smp.c Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-05-01 20:51:12 -07:00
smpboot.c Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-07-03 14:45:09 -07:00
stacktrace.c stacktrace/x86: add function for detecting reliable stack traces 2017-03-08 09:18:02 +01:00
step.c x86/ldt: Rename ldt_struct::size to ::nr_entries 2017-06-08 09:28:21 +02:00
sys_x86_64.c mm: larger stack guard gap, between vmas 2017-06-19 21:50:20 +08:00
sysfb.c
sysfb_efi.c
sysfb_simplefb.c
tboot.c iommu/vt-d: Correctly disable Intel IOMMU force on 2017-06-15 16:41:10 +02:00
tce_64.c
time.c x86/time: Make setup_default_timer_irq() static 2017-06-13 08:42:09 +02:00
tls.c x86/tls: Forcibly set the accessed bit in TLS segments 2017-03-19 12:14:35 +01:00
tls.h
topology.c
trace_clock.c
tracepoint.c tracing: Have the reg function allow to fail 2016-12-09 09:13:30 -05:00
traps.c x86/debug: Handle early WARN_ONs proper 2017-06-12 21:17:48 +02:00
tsc.c Merge branch 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-07-03 18:01:50 -07:00
tsc_msr.c
tsc_sync.c x86/tsc: Remove the TSC_ADJUST clamp 2017-06-04 21:55:53 +02:00
unwind_frame.c x86/unwind: Add end-of-stack check for ftrace handlers 2017-05-24 09:05:16 +02:00
unwind_guess.c x86/unwind: Ensure stack pointer is aligned 2017-04-18 10:30:23 +02:00
uprobes.c
verify_cpu.S
vm86_32.c x86/vm86/32: Switch to flush_tlb_mm_range() in mark_screen_rdonly() 2017-04-26 10:02:06 +02:00
vmlinux.lds.S debug: Fix __bug_table[] in arch linker scripts 2017-04-03 10:22:40 +02:00
vsmp_64.c
x86_init.c x86/boot/e820: Rename default_machine_specific_memory_setup() to e820__memory_setup_default() 2017-01-28 14:42:26 +01:00