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328ea68874
linux/arch/x86/kernel
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Tony Luck 328ea68874 x86/resctrl: Prepare for new Sub-NUMA Cluster (SNC) monitor files 
When SNC is enabled, monitoring data is collected at the SNC node granularity,
but must be reported at L3-cache granularity for backwards compatibility in
addition to reporting at the node level.

Add a "ci" field to the rdt_mon_domain structure to save the cache information
about the enclosing L3 cache for the domain.  This provides:

1) The cache id which is needed to compose the name of the legacy monitoring
   directory, and to determine which domains should be summed to provide
   L3-scoped data.

2) The shared_cpu_map which is needed to determine which CPUs can be used to
   read the RMID counters with the MSR interface.

This is the first step to an eventual goal of monitor reporting files like this
(for a system with two SNC nodes per L3):

  $ cd /sys/fs/resctrl/mon_data
  $ tree mon_L3_00
  mon_L3_00			<- 00 here is L3 cache id
  ├── llc_occupancy		\  These files provide legacy support
  ├── mbm_local_bytes		 > for non-SNC aware monitor apps
  ├── mbm_total_bytes		/  that expect data at L3 cache level
  ├── mon_sub_L3_00		<- 00 here is SNC node id
  │   ├── llc_occupancy		\  These files are finer grained
  │   ├── mbm_local_bytes		 > data from each SNC node
  │   └── mbm_total_bytes		/
  └── mon_sub_L3_01
      ├── llc_occupancy		\
      ├── mbm_local_bytes		 > As above, but for node 1.
      └── mbm_total_bytes		/

  [ bp: Massage commit message. ]

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Tested-by: Babu Moger <babu.moger@amd.com>
Link: https://lore.kernel.org/r/20240628215619.76401-9-tony.luck@intel.com
2024-07-02 19:49:54 +02:00
..
acpi ACPI updates for 6.9-rc1 2024-03-13 11:54:05 -07:00
apic genirq/cpuhotplug, x86/vector: Prevent vector leak during CPU offline 2024-05-23 21:51:50 +02:00
cpu x86/resctrl: Prepare for new Sub-NUMA Cluster (SNC) monitor files 2024-07-02 19:49:54 +02:00
fpu ARM: 2024-05-15 14:46:43 -07:00
kprobes Probes updates for v6.10: 2024-05-17 18:29:30 -07:00
.gitignore
alternative.c x86/alternatives: Use the correct length when optimizing NOPs 2024-05-17 09:27:06 +02:00
amd_gart_64.c change alloc_pages name in dma_map_ops to avoid name conflicts 2024-04-25 20:55:53 -07:00
amd_nb.c x86/amd_nb: Check for invalid SMN reads 2024-06-05 21:23:34 +02:00
aperture_64.c x86/pci: Use PCI_HEADER_TYPE_* instead of literals 2023-12-01 15:00:43 -06:00
apm_32.c x86/apm_32: Remove dead function apm_get_battery_status() 2024-02-21 19:38:03 +01:00
asm-offsets_32.c
asm-offsets_64.c
asm-offsets.c x86/bugs: Rename CONFIG_CALL_DEPTH_TRACKING => CONFIG_MITIGATION_CALL_DEPTH_TRACKING 2024-01-10 10:52:28 +01:00
audit_64.c x86/audit: Fix -Wmissing-variable-declarations warning for ia32_xyz_class 2023-08-30 10:11:16 +02:00
bootflag.c
callthunks.c x86/alternatives: Use a temporary buffer when optimizing NOPs 2024-04-09 18:08:11 +02:00
cet.c x86/ibt: Convert IBT selftest to asm 2023-08-17 17:07:09 +02:00
cfi.c cfi: Flip headers 2023-12-15 16:25:55 -08:00
check.c
cpuid.c x86/cpuid: make cpuid_class a static const structure 2023-08-05 08:31:41 +02:00
crash_dump_32.c
crash_dump_64.c use less confusing names for iov_iter direction initializers 2022-11-25 13:01:55 -05:00
crash.c crash: add a new kexec flag for hotplug support 2024-04-23 14:59:01 +10:00
devicetree.c x86/of: Change x86_dtb_parse_smp_config() to static 2024-04-03 08:49:56 +02:00
doublefault_32.c x86: Avoid missing-prototype warnings for doublefault code 2023-05-18 11:56:18 -07:00
dumpstack_32.c
dumpstack_64.c
dumpstack.c x86/dumpstack: Use uniform "Oops: " prefix for die() messages 2024-03-27 08:45:19 +01:00
e820.c x86/e820: Add a new e820 table update helper 2024-04-29 11:15:31 +02:00
early_printk.c
early-quirks.c x86/pci: Use PCI_HEADER_TYPE_* instead of literals 2023-12-01 15:00:43 -06:00
ebda.c
eisa.c x86/sev: Skip ROM range scans and validation for SEV-SNP guests 2024-03-26 15:22:35 +01:00
espfix_64.c x86/fred: No ESPFIX needed when FRED is enabled 2024-01-31 22:01:51 +01:00
fred.c x86/fred: Add FRED initialization functions 2024-01-31 22:03:32 +01:00
ftrace_32.S x86/headers: Replace #include <asm/export.h> with #include <linux/export.h> 2023-10-03 10:38:07 +02:00
ftrace_64.S x86/headers: Replace #include <asm/export.h> with #include <linux/export.h> 2023-10-03 10:38:07 +02:00
ftrace.c x86/ftrace: enable dynamic ftrace without CONFIG_MODULES 2024-05-14 00:31:44 -07:00
head32.c x86/microcode/32: Move early loading after paging enable 2023-10-18 22:15:01 +02:00
head64.c x86/boot/64: Move 5-level paging global variable assignments back 2024-03-24 05:00:36 +01:00
head_32.S x86/cleanups changes for v6.10: 2024-05-13 18:21:24 -07:00
head_64.S x86/cleanups changes for v6.10: 2024-05-13 18:21:24 -07:00
hpet.c x86/apic/msi: Use DOMAIN_BUS_GENERIC_MSI for HPET/IO-APIC domain search 2024-02-25 18:53:08 +01:00
hw_breakpoint.c x86/amd: Cache debug register values in percpu variables 2023-01-31 20:09:26 +01:00
i8237.c
i8253.c
i8259.c x86/i8259: Skip probing when ACPI/MADT advertises PCAT compatibility 2023-10-27 20:36:49 +02:00
ibt_selftest.S x86/ibt: Convert IBT selftest to asm 2023-08-17 17:07:09 +02:00
idt.c x86/irq: Install posted MSI notification handler 2024-04-30 00:54:42 +02:00
io_delay.c
ioport.c
irq_32.c
irq_64.c fix missing vmalloc.h includes 2024-04-25 20:55:49 -07:00
irq_work.c x86/apic: Wrap IPI calls into helper functions 2023-08-09 12:00:55 -07:00
irq.c x86/irq: Factor out common code for checking pending interrupts 2024-04-30 00:54:43 +02:00
irqflags.S x86/headers: Replace #include <asm/export.h> with #include <linux/export.h> 2023-10-03 10:38:07 +02:00
irqinit.c x86/fred: Invoke FRED initialization code to enable FRED 2024-01-31 22:03:36 +01:00
itmt.c arch/x86: Remove now superfluous sentinel elem from ctl_table arrays 2023-10-10 15:22:02 -07:00
jailhouse.c x86/jailhouse: Use new APIC registration function 2024-02-15 22:07:42 +01:00
jump_label.c
kdebugfs.c
kexec-bzimage64.c - Sumanth Korikkar has taught s390 to allocate hotplug-time page frames 2024-03-14 17:43:30 -07:00
kgdb.c x86/kgdb: Fix a kerneldoc warning when build with W=1 2023-09-24 11:00:13 +02:00
ksysfs.c
kvm.c Linux 6.9-rc3 2024-04-09 09:48:09 +02:00
kvmclock.c kvmclock: Unexport kvmclock clocksource 2024-02-07 17:05:21 +01:00
ldt.c x86/bugs: Rename CONFIG_PAGE_TABLE_ISOLATION => CONFIG_MITIGATION_PAGE_TABLE_ISOLATION 2024-01-10 10:52:28 +01:00
machine_kexec_32.c
machine_kexec_64.c x86/kexec: Fix bug with call depth tracking 2024-06-03 17:19:03 +02:00
Makefile Kbuild updates for v6.10 2024-05-18 12:39:20 -07:00
mmconf-fam10h_64.c
module.c arch: make execmem setup available regardless of CONFIG_MODULES 2024-05-14 00:31:44 -07:00
mpparse.c x86/mpparse: Register APIC address only once 2024-03-23 12:41:48 +01:00
msr.c x86/MSR: make msr_class a static const structure 2023-08-05 08:31:42 +02:00
nmi_selftest.c x86/apic: Wrap IPI calls into helper functions 2023-08-09 12:00:55 -07:00
nmi.c x86/nmi: Upgrade NMI backtrace stall checks & messages 2024-03-26 10:07:59 +01:00
paravirt-spinlocks.c
paravirt.c x86/paravirt: Remove no longer needed paravirt patching code 2023-12-10 23:34:37 +01:00
pci-dma.c x86: always initialize xen-swiotlb when xen-pcifront is enabling 2023-07-31 17:54:27 +02:00
pcspeaker.c
perf_regs.c
platform-quirks.c x86/quirks: Include linux/pnp.h for arch_pnpbios_disabled() 2023-05-18 11:56:18 -07:00
pmem.c
probe_roms.c x86/sev: Skip ROM range scans and validation for SEV-SNP guests 2024-03-26 15:22:35 +01:00
process_32.c x86/fpu: Clean up FPU switching in the middle of task switching 2023-10-20 11:24:22 +02:00
process_64.c x86/cpu: Fix check for RDPKRU in __show_regs() 2024-04-24 14:30:21 +02:00
process.c Core x86 changes for v6.9: 2024-03-11 19:53:15 -07:00
process.h
ptrace.c x86: Add PTRACE interface for shadow stack 2023-08-02 15:01:51 -07:00
pvclock.c locking/atomic: treewide: use raw_atomic*_<op>() 2023-06-05 09:57:20 +02:00
quirks.c
reboot_fixups_32.c
reboot.c x86, crash: wrap crash dumping code into crash related ifdefs 2024-02-23 17:48:23 -08:00
relocate_kernel_32.S
relocate_kernel_64.S x86,objtool: Split UNWIND_HINT_EMPTY in two 2023-03-23 23:18:58 +01:00
resource.c x86/PCI: Tidy E820 removal messages 2022-12-10 10:33:11 -06:00
rethook.c
rtc.c x86/rtc: Remove unused intel-mid.h 2024-04-03 08:24:48 -07:00
setup_percpu.c x86/asm: Add DB flag to 32-bit percpu GDT entry 2023-12-20 10:57:51 +01:00
setup.c The usual shower of singleton fixes and minor series all over MM, 2024-05-19 09:21:03 -07:00
sev_verify_cbit.S x86/boot: Use 32-bit XOR to clear registers 2024-03-01 12:47:37 +01:00
sev-shared.c x86/sev: Check for MWAITX and MONITORX opcodes in the #VC handler 2024-04-22 18:38:28 +02:00
sev.c - Small cleanups and improvements 2024-05-14 09:18:52 -07:00
shstk.c x86/shstk: Enable shadow stacks for x32 2024-03-22 10:17:11 +01:00
signal_32.c x86/syscall/compat: Remove ia32_unistd.h 2024-03-22 09:37:09 +01:00
signal_64.c x86/shstk: Enable shadow stacks for x32 2024-03-22 10:17:11 +01:00
signal.c rseq: Split out rseq.h from sched.h 2023-12-27 11:49:56 -05:00
smp.c - Sumanth Korikkar has taught s390 to allocate hotplug-time page frames 2024-03-14 17:43:30 -07:00
smpboot.c x86/cpu: Switch to new Intel CPU model defines 2024-04-29 10:31:30 +02:00
stacktrace.c
static_call.c x86/bugs: Rename CONFIG_RETHUNK => CONFIG_MITIGATION_RETHUNK 2024-01-10 10:52:29 +01:00
step.c x86/msr: Prepare for including <linux/percpu.h> into <asm/msr.h> 2024-03-04 12:01:39 +01:00
sys_ia32.c
sys_x86_64.c x86/mm: care about shadow stack guard gap during placement 2024-04-25 20:56:28 -07:00
tboot.c
time.c
tls.c x86/gsseg: Move load_gs_index() to its own new header file 2023-01-12 13:06:36 +01:00
tls.h
trace_clock.c
trace.c
tracepoint.c
traps.c Core x86 changes for v6.9: 2024-03-11 19:53:15 -07:00
tsc_msr.c x86/tsc_msr: Switch to new Intel CPU model defines 2024-04-29 10:31:34 +02:00
tsc_sync.c x86/tsc: Trust initial offset in architectural TSC-adjust MSRs 2024-04-29 23:27:16 +02:00
tsc.c x86/cpu changes for v6.10: 2024-05-13 18:44:44 -07:00
umip.c
unwind_frame.c
unwind_guess.c
unwind_orc.c x86/unwind/orc: Remove redundant initialization of 'mid' pointer in __orc_find() 2023-09-21 08:41:23 +02:00
uprobes.c uprobes/x86: Allow to probe a NOP instruction with 0x66 prefix 2022-12-05 11:55:18 +01:00
verify_cpu.S
vm86_32.c
vmcore_info_32.c crash: split vmcoreinfo exporting code out from crash_core.c 2024-02-23 17:48:22 -08:00
vmcore_info_64.c crash: split vmcoreinfo exporting code out from crash_core.c 2024-02-23 17:48:22 -08:00
vmlinux.lds.S x86/build changes for v6.10: 2024-05-13 18:05:08 -07:00
vsmp_64.c x86/apic: Remove unused phys_pkg_id() callback 2024-02-15 22:07:38 +01:00
x86_init.c x86/sev: Skip ROM range scans and validation for SEV-SNP guests 2024-03-26 15:22:35 +01:00