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8da2b938eb
linux/arch/x86/kernel
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Peter Newman 8da2b938eb x86/resctrl: Implement rename op for mon groups 
To change the resources allocated to a large group of tasks, such as an
application container, a container manager must write all of the tasks'
IDs into the tasks file interface of the new control group. This is
challenging when the container's task list is always changing.

In addition, if the container manager is using monitoring groups to
separately track the bandwidth of containers assigned to the same
control group, when moving a container, it must first move the
container's tasks to the default monitoring group of the new control
group before it can move these tasks into the container's replacement
monitoring group under the destination control group. This is
undesirable because it makes bandwidth usage during the move
unattributable to the correct tasks and resets monitoring event counters
and cache usage information for the group.

Implement the rename operation only for resctrlfs monitor groups to
enable users to move a monitoring group from one control group to
another. This effects a change in resources allocated to all the tasks
in the monitoring group while otherwise leaving the monitoring data
intact.

Signed-off-by: Peter Newman <peternewman@google.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/20230419125015.693566-3-peternewman@google.com
2023-06-07 12:40:36 +02:00
..
acpi x86 APIC updates: 2023-04-25 11:39:45 -07:00
apic x86 APIC updates: 2023-04-25 11:39:45 -07:00
cpu x86/resctrl: Implement rename op for mon groups 2023-06-07 12:40:36 +02:00
fpu x86/fpu/xstate: Prevent false-positive warning in __copy_xstate_uabi_buf() 2023-03-22 10:59:13 -07:00
kprobes probes updates for 6.3: 2023-02-23 13:03:08 -08:00
.gitignore
alternative.c x86/alternatives: Teach text_poke_bp() to patch Jcc.d32 instructions 2023-01-31 15:05:31 +01:00
amd_gart_64.c x86/mm: Remove P*D_PAGE_MASK and P*D_PAGE_SIZE macros 2022-12-15 10:37:27 -08:00
amd_nb.c x86/amd_nb: Add PCI ID for family 19h model 78h 2023-05-08 11:25:19 +02:00
aperture_64.c x86: Fix various duplicate-word comment typos 2022-08-15 19:17:52 +02:00
apm_32.c efi: x86: Wire up IBT annotation in memory attributes table 2023-02-09 19:30:54 +01:00
asm-offsets_32.c
asm-offsets_64.c x86: Fixup asm-offsets duplicate 2022-10-17 16:41:06 +02:00
asm-offsets.c x86/smpboot: Remove initial_stack on 64-bit 2023-03-21 13:35:53 +01:00
audit_64.c
bootflag.c
callthunks.c module: replace module_layout with module_memory 2023-03-09 12:55:15 -08:00
cfi.c x86: Add support for CONFIG_CFI_CLANG 2022-09-26 10:13:16 -07:00
check.c
cpuid.c driver core: class: remove module * from class_create() 2023-03-17 15:16:33 +01:00
crash_core_32.c
crash_core_64.c
crash_dump_32.c vmcore: convert copy_oldmem_page() to take an iov_iter 2022-04-29 14:37:59 -07:00
crash_dump_64.c use less confusing names for iov_iter direction initializers 2022-11-25 13:01:55 -05:00
crash.c x86/crash: Disable virt in core NMI crash handler to avoid double shootdown 2023-01-24 10:05:21 -08:00
devicetree.c x86/of: Add support for boot time interrupt delivery mode configuration 2022-12-02 14:57:14 +01:00
doublefault_32.c
dumpstack_32.c x86/percpu: Move irq_stack variables next to current_task 2022-10-17 16:41:05 +02:00
dumpstack_64.c x86/percpu: Move irq_stack variables next to current_task 2022-10-17 16:41:05 +02:00
dumpstack.c x86/show_trace_log_lvl: Ensure stack pointer is aligned, again 2023-05-16 06:31:04 -07:00
e820.c x86/setup: Move duplicate boot_cpu_data definition out of the ifdeffery 2023-01-11 12:45:16 +01:00
early_printk.c x86/earlyprintk: Clean up pciserial 2022-08-29 12:19:25 +02:00
early-quirks.c drm/i915/rpl-p: Add PCI IDs 2022-04-19 17:14:09 -07:00
ebda.c
eisa.c
espfix_64.c x86/espfix: Use get_random_long() rather than archrandom 2022-10-31 20:12:50 +01:00
ftrace_32.S ftrace: selftest: remove broken trace_direct_tramp 2023-03-21 13:59:29 -04:00
ftrace_64.S Objtool changes for v6.4: 2023-04-28 14:02:54 -07:00
ftrace.c New Feature: 2022-12-17 14:06:53 -06:00
head32.c x86/head: Mark *_start_kernel() __noreturn 2023-04-14 17:31:24 +02:00
head64.c x86/head: Mark *_start_kernel() __noreturn 2023-04-14 17:31:24 +02:00
head_32.S x86/asm/32: Remove setup_once() 2022-12-02 14:06:34 +01:00
head_64.S Objtool changes for v6.4: 2023-04-28 14:02:54 -07:00
hpet.c clocksource: Verify HPET and PMTMR when TSC unverified 2023-02-02 14:23:02 -08:00
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: Mark legacy PIC interrupts with IRQ_LEVEL 2023-01-16 17:24:56 +01:00
idt.c x86/traps: Add #VE support for TDX guest 2022-04-07 08:27:51 -07:00
io_delay.c
ioport.c
irq_32.c x86/percpu: Move irq_stack variables next to current_task 2022-10-17 16:41:05 +02:00
irq_64.c x86/percpu: Move irq_stack variables next to current_task 2022-10-17 16:41:05 +02:00
irq_work.c
irq.c
irqflags.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
irqinit.c x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL 2023-01-16 17:24:56 +01:00
itmt.c x86: Simplify one-level sysctl registration for itmt_kern_table 2023-03-22 11:47:21 -07:00
jailhouse.c
jump_label.c jump_label: make initial NOP patching the special case 2022-06-24 09:48:55 +02:00
kdebugfs.c x86/boot: Fix memremap of setup_indirect structures 2022-03-09 12:49:44 +01:00
kexec-bzimage64.c docs: move x86 documentation into Documentation/arch/ 2023-03-30 12:58:51 -06:00
kgdb.c
ksysfs.c x86/boot: Fix memremap of setup_indirect structures 2022-03-09 12:49:44 +01:00
kvm.c ARM64: 2022-12-15 11:12:21 -08:00
kvmclock.c sched/clock/x86: Mark sched_clock() noinstr 2023-01-31 15:01:47 +01:00
ldt.c
machine_kexec_32.c
machine_kexec_64.c x86/kexec: remove unnecessary arch_kexec_kernel_image_load() 2023-04-08 13:45:38 -07:00
Makefile rethook, fprobe: do not trace rethook related functions 2023-05-18 07:08:01 +09:00
mmconf-fam10h_64.c
module.c module: replace module_layout with module_memory 2023-03-09 12:55:15 -08:00
mpparse.c
msr.c driver core: class: remove module * from class_create() 2023-03-17 15:16:33 +01:00
nmi_selftest.c
nmi.c ARM: 2023-02-25 11:30:21 -08:00
paravirt-spinlocks.c
paravirt.c x86/paravirt: Convert simple paravirt functions to asm 2023-03-17 13:29:47 +01:00
pci-dma.c docs: move x86 documentation into Documentation/arch/ 2023-03-30 12:58:51 -06:00
pcspeaker.c
perf_regs.c
platform-quirks.c
pmem.c x86/pmem: Fix platform-device leak in error path 2022-06-20 18:01:16 +02:00
probe_roms.c x86/kernel: Validate ROM memory before accessing when SEV-SNP is active 2022-04-06 13:23:09 +02:00
process_32.c x86/resctl: fix scheduler confusion with 'current' 2023-03-08 11:48:11 -08:00
process_64.c IOMMU Updates for Linux 6.4 2023-04-30 13:00:38 -07:00
process.c Objtool changes for v6.4: 2023-04-28 14:02:54 -07:00
process.h x86: Snapshot thread flags 2021-12-01 00:06:43 +01:00
ptrace.c x86: Improve formatting of user_regset arrays 2022-11-01 15:36:52 -07:00
pvclock.c sched/clock/x86: Mark sched_clock() noinstr 2023-01-31 15:01:47 +01:00
quirks.c
reboot_fixups_32.c
reboot.c cpu: Mark nmi_panic_self_stop() __noreturn 2023-04-14 17:31:26 +02:00
relocate_kernel_32.S x86/kexec: Disable RET on kexec 2022-07-09 13:12:32 +02:00
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 x86,rethook: Fix arch_rethook_trampoline() to generate a complete pt_regs 2022-03-28 19:38:51 -07:00
rtc.c x86/rtc: Simplify PNP ids check 2023-01-06 04:22:34 +01:00
setup_percpu.c - Add the call depth tracking mitigation for Retbleed which has 2022-12-14 15:03:00 -08:00
setup.c x86/setup: Move duplicate boot_cpu_data definition out of the ifdeffery 2023-01-11 12:45:16 +01:00
sev_verify_cbit.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
sev-shared.c Revert "x86/sev: Expose sev_es_ghcb_hv_call() for use by HyperV" 2022-07-27 18:09:13 +02:00
sev.c x86/sev: Change snp_guest_issue_request()'s fw_err argument 2023-03-21 15:43:19 +01:00
signal_32.c - Cache the AMD debug registers in per-CPU variables to avoid MSR writes 2023-02-21 14:51:40 -08:00
signal_64.c x86/signal/compat: Move sigaction_compat_abi() to signal_64.c 2023-01-06 04:16:02 +01:00
signal.c x86/signal: Fix the value returned by strict_sas_size() 2023-01-15 09:54:27 +01:00
smp.c x86/reboot: Disable SVM, not just VMX, when stopping CPUs 2023-01-24 10:05:22 -08:00
smpboot.c Objtool changes for v6.4: 2023-04-28 14:02:54 -07:00
stacktrace.c x86: remove __range_not_ok() 2022-02-25 09:36:05 +01:00
static_call.c x86/static_call: Add support for Jcc tail-calls 2023-01-31 15:05:31 +01:00
step.c ptrace: Reimplement PTRACE_KILL by always sending SIGKILL 2022-05-11 14:34:28 -05:00
sys_ia32.c
sys_x86_64.c x86/mm: Cleanup the control_va_addr_alignment() __setup handler 2022-05-04 18:20:42 +02:00
tboot.c mm: remove rb tree. 2022-09-26 19:46:16 -07:00
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
topology.c x86/cpu: Switch to cpu_feature_enabled() for X86_FEATURE_XENPV 2022-11-22 16:18:19 +01:00
trace_clock.c
trace.c
tracepoint.c x86/traceponit: Fix comment about irq vector tracepoints 2022-05-26 22:03:52 -04:00
traps.c IOMMU Updates for Linux 6.4 2023-04-30 13:00:38 -07:00
tsc_msr.c
tsc_sync.c x86/tsc: Add a timer to make sure TSC_adjust is always checked 2021-12-02 00:40:35 +01:00
tsc.c Updates for timekeeping, timers and clockevent/source drivers: 2023-02-21 09:45:13 -08:00
umip.c
unwind_frame.c x86: kmsan: don't instrument stack walking functions 2022-10-03 14:03:25 -07:00
unwind_guess.c
unwind_orc.c x86,objtool: Split UNWIND_HINT_EMPTY in two 2023-03-23 23:18:58 +01:00
uprobes.c uprobes/x86: Allow to probe a NOP instruction with 0x66 prefix 2022-12-05 11:55:18 +01:00
verify_cpu.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
vm86_32.c x86/32: Remove lazy GS macros 2022-04-14 14:09:43 +02:00
vmlinux.lds.S objtool/idle: Validate __cpuidle code as noinstr 2023-01-13 11:48:15 +01:00
vsmp_64.c
x86_init.c - Add the necessary glue so that the kernel can run as a confidential 2023-04-25 10:48:08 -07:00