Paul E. McKenney 7560c02bdf clocksource: Check per-CPU clock synchronization when marked unstable ... Some sorts of per-CPU clock sources have a history of going out of synchronization with each other. However, this problem has purportedy been solved in the past ten years. Except that it is all too possible that the problem has instead simply been made less likely, which might mean that some of the occasional "Marking clocksource 'tsc' as unstable" messages might be due to desynchronization. How would anyone know? Therefore apply CPU-to-CPU synchronization checking to newly unstable clocksource that are marked with the new CLOCK_SOURCE_VERIFY_PERCPU flag. Lists of desynchronized CPUs are printed, with the caveat that if it is the reporting CPU that is itself desynchronized, it will appear that all the other clocks are wrong. Just like in real life. Reported-by: Chris Mason <clm@fb.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Feng Tang <feng.tang@intel.com> Link: https://lore.kernel.org/r/20210527190124.440372-2-paulmck@kernel.org		2021-06-22 16:53:16 +02:00
..
acpi	Trivial cleanups and fixes all over the place.	2021-04-26 09:25:47 -07:00
apic	A single commit to make the vector allocation code more resilent against an	2021-04-26 10:00:38 -07:00
cpu	- Enable -Wundef for the compressed kernel build stage	2021-05-16 09:31:06 -07:00
fpu	x86: Fix various typos in comments	2021-03-18 15:31:53 +01:00
kprobes	- turn the stack canary into a normal __percpu variable on 32-bit which	2021-04-27 17:45:09 -07:00
.gitignore
alternative.c	The x86 MM changes in this cycle were:	2021-04-29 11:41:43 -07:00
amd_gart_64.c
amd_nb.c	x86: Fix various typos in comments, take #2	2021-03-21 23:50:28 +01:00
aperture_64.c
apm_32.c	x86: Fix various typos in comments, take #2	2021-03-21 23:50:28 +01:00
asm-offsets.c	x86/paravirt: Switch iret pvops to ALTERNATIVE	2021-03-11 19:58:54 +01:00
asm-offsets_32.c	x86/stackprotector/32: Make the canary into a regular percpu variable	2021-03-08 13:19:05 +01:00
asm-offsets_64.c	x86/xen: Drop USERGS_SYSRET64 paravirt call	2021-02-10 12:32:07 +01:00
audit_64.c
bootflag.c
check.c
cpuid.c	smp: Cleanup smp_call_function*()	2020-11-24 16:47:49 +01:00
crash.c	Devicetree updates for v5.13:	2021-04-28 15:50:24 -07:00
crash_core_32.c
crash_core_64.c
crash_dump_32.c	x86/crashdump/32: Simplify copy_oldmem_page()	2020-11-24 14:42:09 +01:00
crash_dump_64.c
devicetree.c
doublefault_32.c	x86/stackprotector/32: Make the canary into a regular percpu variable	2021-03-08 13:19:05 +01:00
dumpstack.c	- Remove all uses of TIF_IA32 and TIF_X32 and reclaim the two bits in the end	2020-12-14 13:45:26 -08:00
dumpstack_32.c
dumpstack_64.c	x86/irq/64: Adjust the per CPU irq stack pointer by 8	2021-02-10 23:34:14 +01:00
e820.c	Power management updates for 5.13-rc1	2021-04-26 15:10:25 -07:00
early-quirks.c	x86/gpu: Add Alderlake-S stolen memory support	2021-01-26 06:55:09 -08:00
early_printk.c
ebda.c
eisa.c
espfix_64.c
ftrace.c	x86: Remove dynamic NOP selection	2021-03-15 16:24:59 +01:00
ftrace_32.S
ftrace_64.S	x86/ftrace: Support objtool vmlinux.o validation in ftrace_64.S	2021-01-26 11:33:02 -06:00
head32.c
head64.c	x86/sev-es: Rename sev-es.{ch} to sev.{ch}	2021-05-10 07:40:27 +02:00
head_32.S	x86/stackprotector/32: Make the canary into a regular percpu variable	2021-03-08 13:19:05 +01:00
head_64.S	- Fix the vmlinux size check on 64-bit along with adding useful clarifications on the topic	2020-12-14 13:54:50 -08:00
hpet.c
hw_breakpoint.c	x86/debug: Prevent data breakpoints on cpu_dr7	2021-02-05 20:13:12 +01:00
i8237.c
i8253.c
i8259.c
idt.c	x86: Fix various typos in comments	2021-03-18 15:31:53 +01:00
io_delay.c
ioport.c
irq.c	x86: Fix various typos in comments	2021-03-18 15:31:53 +01:00
irq_32.c	softirq: Move do_softirq_own_stack() to generic asm header	2021-02-10 23:34:16 +01:00
irq_64.c	x86/softirq/64: Inline do_softirq_own_stack()	2021-02-10 23:34:17 +01:00
irq_work.c
irqflags.S	x86/pv: Rework arch_local_irq_restore() to not use popf	2021-02-10 12:36:45 +01:00
irqinit.c
itmt.c
jailhouse.c
jump_label.c	x86: Remove dynamic NOP selection	2021-03-15 16:24:59 +01:00
kdebugfs.c
kexec-bzimage64.c	x86: Use ELF fields defined in 'struct kimage'	2021-03-08 12:06:29 -07:00
kgdb.c	x86: Fix various typos in comments	2021-03-18 15:31:53 +01:00
ksysfs.c
kvm.c	x86/kvm: Unify kvm_pv_guest_cpu_reboot() with kvm_guest_cpu_offline()	2021-05-07 06:06:11 -04:00
kvmclock.c	x86/kvm: Disable all PV features on crash	2021-05-07 06:06:10 -04:00
ldt.c	x86/ldt: Use tlb_gather_mmu_fullmm() when freeing LDT page-tables	2021-01-29 20:02:29 +01:00
machine_kexec_32.c
machine_kexec_64.c	Devicetree updates for v5.13:	2021-04-28 15:50:24 -07:00
Makefile	x86/sev-es: Rename sev-es.{ch} to sev.{ch}	2021-05-10 07:40:27 +02:00
mmconf-fam10h_64.c	x86/msr: Rename MSR_K8_SYSCFG to MSR_AMD64_SYSCFG	2021-05-10 07:51:38 +02:00
module.c	x86/build: Treat R_386_PLT32 relocation as R_386_PC32	2021-01-28 12:24:06 +01:00
mpparse.c
msr.c	x86/MSR: Filter MSR writes through X86_IOC_WRMSR_REGS ioctl too	2021-01-27 19:06:47 +01:00
nmi.c	x86/sev-es: Rename sev-es.{ch} to sev.{ch}	2021-05-10 07:40:27 +02:00
nmi_selftest.c
paravirt-spinlocks.c	x86/paravirt: Add new features for paravirt patching	2021-03-11 19:51:49 +01:00
paravirt.c	The x86 MM changes in this cycle were:	2021-04-29 11:41:43 -07:00
pci-dma.c
pci-iommu_table.c	x86: Remove definition of DEBUG	2021-01-15 08:23:10 +01:00
pci-swiotlb.c
pcspeaker.c
perf_regs.c	- Remove all uses of TIF_IA32 and TIF_X32 and reclaim the two bits in the end	2020-12-14 13:45:26 -08:00
platform-quirks.c
pmem.c
probe_roms.c
process.c	x86/process: setup io_threads more like normal user space threads	2021-05-05 17:47:41 -06:00
process.h
process_32.c
process_64.c	x86/irq: Sanitize irq stack tracking	2021-02-10 23:34:13 +01:00
ptrace.c	x86/ptrace: Clean up PTRACE_GETREGS/PTRACE_PUTREGS regset selection	2021-02-04 12:33:15 +01:00
pvclock.c	x86: Fix various typos in comments	2021-03-18 15:31:53 +01:00
quirks.c
reboot.c	x86:	2021-02-21 13:31:43 -08:00
reboot_fixups_32.c
relocate_kernel_32.S	x86: Fix various typos in comments, take #2	2021-03-21 23:50:28 +01:00
relocate_kernel_64.S	x86: Fix various typos in comments, take #2	2021-03-21 23:50:28 +01:00
resource.c
rtc.c
setup.c	- turn the stack canary into a normal __percpu variable on 32-bit which	2021-04-27 17:45:09 -07:00
setup_percpu.c	x86/stackprotector/32: Make the canary into a regular percpu variable	2021-03-08 13:19:05 +01:00
sev-shared.c	x86/sev-es: Invalidate the GHCB after completing VMGEXIT	2021-05-18 07:06:29 +02:00
sev.c	x86/sev-es: Use __put_user()/__get_user() for data accesses	2021-05-19 18:45:37 +02:00
sev_verify_cbit.S
signal.c	Merge branch 'linus' into x86/cleanups, to resolve conflict	2021-03-21 22:16:08 +01:00
signal_compat.c	signal: Deliver all of the siginfo perf data in _perf	2021-05-18 16:20:54 -05:00
smp.c	x86: Fix various typos in comments, take #2	2021-03-21 23:50:28 +01:00
smpboot.c	x86, sched: Fix the AMD CPPC maximum performance value on certain AMD Ryzen generations	2021-05-13 12:10:24 +02:00
stacktrace.c	stacktrace: Move documentation for arch_stack_walk_reliable() to header	2021-03-10 15:52:31 +01:00
static_call.c	x86: Remove dynamic NOP selection	2021-03-15 16:24:59 +01:00
step.c	entry: Ensure trap after single-step on system call return	2021-02-06 00:21:42 +01:00
sys_ia32.c
sys_x86_64.c	x86/mm: Refine mmap syscall implementation	2021-01-05 19:07:42 +01:00
sysfb.c
sysfb_efi.c	x86: Fix various typos in comments	2021-03-18 15:31:53 +01:00
sysfb_simplefb.c
tboot.c	x86/boot/tboot: Avoid Wstringop-overread-warning	2021-03-23 00:16:13 +01:00
time.c
tls.c	x86/stackprotector/32: Make the canary into a regular percpu variable	2021-03-08 13:19:05 +01:00
tls.h
topology.c	x86: Fix various typos in comments	2021-03-18 15:31:53 +01:00
trace_clock.c
tracepoint.c
traps.c	- turn the stack canary into a normal __percpu variable on 32-bit which	2021-04-27 17:45:09 -07:00
tsc.c	clocksource: Check per-CPU clock synchronization when marked unstable	2021-06-22 16:53:16 +02:00
tsc_msr.c
tsc_sync.c	x86: Fix various typos in comments, take #2	2021-03-21 23:50:28 +01:00
umip.c	- turn the stack canary into a normal __percpu variable on 32-bit which	2021-04-27 17:45:09 -07:00
unwind_frame.c
unwind_guess.c
unwind_orc.c	x86/unwind/orc: Silence warnings caused by missing ORC data	2021-03-06 13:09:45 +01:00
uprobes.c	x86/uprobes: Convert to insn_decode()	2021-03-15 12:05:03 +01:00
verify_cpu.S
vm86_32.c	x86/vm86/32: Remove VM86_SCREEN_BITMAP support	2021-01-21 20:08:53 +01:00
vmlinux.lds.S
vsmp_64.c
x86_init.c