Joel Stanley 45f0ea796c powerpc: Warn about use of smt_snooze_delay ...

commit a02f6d4235 upstream.

It's not done anything for a long time. Save the percpu variable, and
emit a warning to remind users to not expect it to do anything.

This uses pr_warn_once instead of pr_warn_ratelimit as testing
'ppc64_cpu --smt=off' on a 24 core / 4 SMT system showed the warning
to be noisy, as the online/offline loop is slow.

Fixes: 3fa8cad82b ("powerpc/pseries/cpuidle: smt-snooze-delay cleanup.")
Cc: stable@vger.kernel.org # v3.14
Signed-off-by: Joel Stanley <joel@jms.id.au>
Acked-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200902000012.3440389-1-joel@jms.id.au
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2020-11-10 10:23:58 +01:00

..

vdso32

powerpc: Fix vDSO clock_getres()

2019-12-21 10:42:17 +01:00

vdso64

powerpc: Fix vDSO clock_getres()

2019-12-21 10:42:17 +01:00

.gitignore

…

align.c

powerpc: Fix DAR reporting when alignment handler faults

2017-09-27 14:39:21 +02:00

asm-offsets.c

powerpc: Fix vDSO clock_getres()

2019-12-21 10:42:17 +01:00

audit.c

…

btext.c

powerpc/mm: Use a helper for finding pte bits mapping I/O area

2016-05-01 18:32:32 +10:00

cacheinfo.c

powerpc/cacheinfo: add cacheinfo_teardown, cacheinfo_rebuild

2020-01-29 10:24:26 +01:00

cacheinfo.h

powerpc/cacheinfo: add cacheinfo_teardown, cacheinfo_rebuild

2020-01-29 10:24:26 +01:00

compat_audit.c

…

cpu_setup_6xx.S

powerpc: Various typo fixes

2016-06-14 13:58:26 +10:00

cpu_setup_44x.S

…

cpu_setup_fsl_booke.S

powerpc/cache: add cache flush operation for various e500

2016-03-04 23:44:51 -06:00

cpu_setup_pa6t.S

…

cpu_setup_power.S

powerpc/64s: Clear PCR on boot

2018-06-06 16:44:32 +02:00

cpu_setup_ppc970.S

…

cputable.c

powerpc: fix hardware PMU exception bug on PowerVM compatibility mode systems

2020-03-11 07:53:14 +01:00

crash_dump.c

powerpc: Remove superfluous bootmem includes

2014-11-10 09:59:26 +11:00

crash.c

powerpc/crash: Rearrange loop condition to avoid out of bounds array access

2016-07-14 20:26:22 +10:00

dbell.c

powerpc/powernv: Fixes for hypervisor doorbell handling

2015-03-20 14:51:53 +11:00

dma-iommu.c

powerpc/dma: Fix dma_map_ops::get_required_mask

2020-09-23 08:46:16 +02:00

dma-swiotlb.c

powerpc/iommu: Support "hybrid" iommu/direct DMA ops for coherent_mask < dma_mask

2015-07-13 10:10:55 +10:00

dma.c

dma-mapping: use unsigned long for dma_attrs

2016-08-04 08:50:07 -04:00

eeh_cache.c

powerpc/eeh: Fix pr_debug()s in eeh_cache.c

2016-07-08 22:09:50 +10:00

eeh_dev.c

powerpc/pci: Delay populating pdn

2016-06-21 15:30:56 +10:00

eeh_driver.c

powerpc/powernv/iov: Ensure the pdn for VFs always contains a valid PE number

2020-02-28 15:42:18 +01:00

eeh_event.c

powerpc: sparse: static-ify some things

2016-04-12 21:05:18 +10:00

eeh_pe.c

powerpc/eeh: Fix use of EEH_PE_KEEP on wrong field

2019-11-28 18:28:18 +01:00

eeh_sysfs.c

powerpc/eeh: Fix PE state format

2014-11-27 09:32:58 +11:00

eeh.c

powerpc/eeh: Handle hugepages in ioremap space

2019-08-04 09:33:41 +02:00

entry_32.S

powerpc/fsl: Sanitize the syscall table for NXP PowerPC 32 bit platforms

2019-04-17 08:36:41 +02:00

entry_64.S

powerpc/book3s64: Fix link stack flush on context switch

2019-11-28 18:29:06 +01:00

epapr_hcalls.S

ppc: move exports to definitions

2016-08-07 23:50:09 -04:00

epapr_paravirt.c

…

exceptions-64e.S

powerpc/fsl: Fix the flush of branch predictor.

2019-04-17 08:36:43 +02:00

exceptions-64s.S

powerpc/64s/exception: machine check use correct cfar for late handler

2019-10-07 18:53:13 +02:00

fadump.c

powerpc/fadump: Return error when fadump registration fails

2018-10-13 09:18:57 +02:00

firmware.c

…

fpu.S

Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

2016-10-14 14:26:58 -07:00

fsl_booke_entry_mapping.S

powerpc/fsl: Force coherent memory on e500mc derivatives

2015-08-07 23:00:01 -05:00

ftrace.c

ftrace: Add return address pointer to ftrace_ret_stack

2016-08-24 12:15:14 +02:00

head_8xx.S

powerpc/8xx: fix invalid register expression in head_8xx.S

2018-08-03 07:55:19 +02:00

head_32.S

Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

2016-10-14 14:26:58 -07:00

head_40x.S

ppc: move exports to definitions

2016-08-07 23:50:09 -04:00

head_44x.S

ppc: move exports to definitions

2016-08-07 23:50:09 -04:00

head_64.S

powerpc/64e: Convert cmpi to cmpwi in head_64.S

2017-01-09 08:32:25 +01:00

head_booke.h

powerpc/fsl: Fixed warning: orphan section `__btb_flush_fixup'

2019-04-17 08:36:43 +02:00

head_fsl_booke.S

powerpc/fsl: Flush the branch predictor at each kernel entry (32 bit)

2019-04-17 08:36:43 +02:00

hw_breakpoint.c

powerpc/ptrace: Fix enforcement of DAWR constraints

2018-07-03 11:23:08 +02:00

ibmebus.c

powerpc/ibmebus: Fix device reference leaks in sysfs interface

2017-01-19 20:18:08 +01:00

idle_6xx.S

…

idle_book3e.S

…

idle_book3s.S

powerpc/64s: Simple RFI macro conversions

2018-02-25 11:05:50 +01:00

idle_e500.S

powerpc/e500mc: Remove dead L2 flushing code in idle_e500.S

2015-06-02 21:37:19 -05:00

idle_power4.S

…

idle.c

…

io-workarounds.c

powerpc/mm: Differentiate between hugetlb and THP during page walk

2015-10-12 15:30:09 +11:00

io.c

…

iomap.c

powerpc: add io{read,write}64 accessors

2016-05-31 16:41:52 +08:00

iommu.c

powerpc/iommu: Avoid derefence before pointer check

2019-11-25 09:52:28 +01:00

irq.c

powerpc/irq: fix stack overflow verification

2020-01-04 13:40:24 +01:00

isa-bridge.c

powerpc/mm: Use a helper for finding pte bits mapping I/O area

2016-05-01 18:32:32 +10:00

jump_label.c

jump_label: Rename JUMP_LABEL_{EN,DIS}ABLE to JUMP_LABEL_{JMP,NOP}

2015-08-03 11:34:12 +02:00

kgdb.c

powerpc: Fix kgdb on little endian ppc64le

2016-02-18 00:03:26 +11:00

kprobes.c

powerpc/kprobes: Pause function_graph tracing during jprobes handling

2017-06-29 13:00:29 +02:00

kvm_emul.S

…

kvm.c

powerpc: Remove redundant breaks

2015-08-06 15:10:20 +10:00

l2cr_6xx.S

…

legacy_serial.c

powerpc: Remove all usages of NO_IRQ

2016-09-20 20:57:12 +10:00

machine_kexec_32.c

…

machine_kexec_64.c

powerpc/64/kexec: Remove BookE special default_machine_kexec_prepare()

2016-09-23 07:54:18 +10:00

machine_kexec.c

powerpc/crashkernel: Take "mem=" option into account

2020-06-30 15:38:22 -04:00

Makefile

powerpc/64: Add CONFIG_PPC_BARRIER_NOSPEC

2019-04-17 08:36:41 +02:00

mce_power.c

powerpc/mm/radix: Fix CONFIG_PPC_MMU_STD_64 typo

2016-05-11 21:53:59 +10:00

mce.c

powerpc/book3s/mce: Move add_taint() later in virtual mode

2017-05-25 15:44:43 +02:00

misc_32.S

powerpc: Fix build warning on 32-bit PPC

2017-01-15 13:42:56 +01:00

misc_64.S

powerpc/64: Fix flush_(d|i)cache_range() called from modules

2017-04-12 12:41:13 +02:00

misc.S

ppc: move exports to definitions

2016-08-07 23:50:09 -04:00

module_32.c

powerpc/module: Only try to generate the ftrace_caller() stub once

2016-03-07 14:53:53 +11:00

module_64.c

powerpc/modules: Don't try to restore r2 after a sibling call

2018-03-22 09:17:57 +01:00

module.c

powerpc/64: Add CONFIG_PPC_BARRIER_NOSPEC

2019-04-17 08:36:41 +02:00

msi.c

powerpc/msi: Fix NULL pointer access in teardown code

2018-12-21 14:11:32 +01:00

nvram_64.c

pstore: Fix flags to enable dumps on powerpc

2017-05-20 14:28:42 +02:00

of_platform.c

powerpc/eeh: Do probe on pci_dn

2015-03-24 13:15:52 +11:00

paca.c

powerpc/mm: Convert early cpu/mmu feature check to use the new helpers

2016-08-01 11:15:01 +10:00

pci_32.c

powerpc/32: Add a missing include header

2018-08-03 07:55:18 +02:00

pci_64.c

Merge tag 'powerpc-4.7-5' into next

2016-07-15 14:57:47 +10:00

pci_dn.c

powerpc/sriov: Remove VF eeh_dev state when disabling SR-IOV

2020-02-28 15:42:37 +01:00

pci_of_scan.c

powerpc/pci/of: Parse unassigned resources

2020-05-10 10:28:00 +02:00

pci-common.c

Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

2016-10-14 14:26:58 -07:00

pci-hotplug.c

powerpc/pci: Don't scan empty slot

2016-05-11 21:54:26 +10:00

pmc.c

…

ppc32.h

…

ppc_save_regs.S

…

proc_powerpc.c

…

process.c

powerpc/process: Fix flush_all_to_thread for SPE

2019-11-28 18:28:40 +01:00

prom_init_check.sh

powerpc: Simplify symbol check in prom_init_check.sh

2014-09-25 23:14:46 +10:00

prom_init.c

powerpc: Add missing error check to prom_find_boot_cpu()

2017-02-09 08:08:27 +01:00

prom_parse.c

…

prom.c

powerpc/prom: fix early DEBUG messages

2019-12-05 15:34:45 +01:00

ptrace32.c

ptrace: Don't allow accessing an undumpable mm

2017-01-06 10:40:13 +01:00

ptrace.c

powerpc/ptrace: Simplify vr_get/set() to avoid GCC warning

2019-03-23 13:19:52 +01:00

reloc_32.S

…

reloc_64.S

…

rtas_flash.c

powerpc: Fix endianness of flash_block_list in rtas_flash

2014-07-28 11:30:54 +10:00

rtas_pci.c

powerpc: move find_and_init_phbs() to pSeries specific code

2015-04-11 20:49:09 +10:00

rtas-proc.c

powerpc: Various typo fixes

2016-06-14 13:58:26 +10:00

rtas-rtc.c

…

rtas.c

powerpc/pseries: Disable CPU hotplug across migrations

2019-11-25 09:52:30 +01:00

rtasd.c

powerpc/pseries: start rtasd before PCI probing

2016-07-08 19:22:15 +10:00

security.c

powerpc/security: Fix wrong message when RFI Flush is disable

2020-01-04 13:40:53 +01:00

setup_32.c

Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

2016-10-14 14:26:58 -07:00

setup_64.c

powerpc/64s: Fix section mismatch warnings from setup_rfi_flush()

2018-06-06 16:44:37 +02:00

setup-common.c

powerpc/fsl: Enable runtime patching if nospectre_v2 boot arg is used

2019-04-17 08:36:43 +02:00

setup.h

powerpc: Merge 32-bit and 64-bit setup_arch()

2016-07-21 19:17:46 +10:00

signal_32.c

powerpc/tm: Fix oops on sigreturn on systems without TM

2019-08-04 09:33:43 +02:00

signal_64.c

powerpc/64/tm: Don't let userspace set regs->trap via sigreturn

2020-04-24 07:59:00 +02:00

signal.c

powerpc/signal: Properly handle return value from uprobe_deny_signal()

2017-11-30 08:39:08 +00:00

signal.h

powerpc: tm: Rename transct_(*) to ck(\1)_state

2016-10-04 20:33:16 +11:00

smp-tbsync.c

…

smp.c

powerpc, hotplug: Avoid to touch non-existent cpumasks.

2016-08-22 11:09:33 +10:00

stacktrace.c

powerpc: Implement save_stack_trace_regs() to enable kprobe stack tracing

2016-01-11 14:27:28 +11:00

suspend.c

nosave: consolidate __nosave_{begin,end} in <asm/sections.h>

2014-10-09 22:26:04 -04:00

swsusp_32.S

powerpc/32s: fix suspend/resume when IBATs 4-7 are used

2019-08-04 09:33:31 +02:00

swsusp_64.c

…

swsusp_asm64.S

powerpc: Fix invalid use of register expressions

2019-04-17 08:36:39 +02:00

swsusp_booke.S

…

swsusp.c

powerpc/mm: Abstraction for switch_mmu_context()

2016-05-01 18:33:04 +10:00

sys_ppc32.c

…

syscalls.c

powerpc/sparse: Add more assembler prototypes

2016-09-13 17:36:58 +10:00

sysfs.c

powerpc: Warn about use of smt_snooze_delay

2020-11-10 10:23:58 +01:00

systbl_chk.c

powerpc: Standardise on NR_syscalls rather than __NR_syscalls.

2015-11-26 22:11:17 +11:00

systbl_chk.sh

powerpc: Standardise on NR_syscalls rather than __NR_syscalls.

2015-11-26 22:11:17 +11:00

systbl.S

powerpc: Add a proper syscall for switching endianness

2015-03-28 22:03:40 +11:00

tau_6xx.c

powerpc/tau: Disable TAU between measurements

2020-10-29 09:05:38 +01:00

time.c

powerpc/pseries: Mark accumulate_stolen_time() as notrace

2020-01-04 13:40:42 +01:00

tm.S

powerpc/tm: Avoid possible userspace r1 corruption on reclaim

2018-10-20 09:51:31 +02:00

trace_clock.c

powerpc/ftrace: add powerpc timebase as a trace clock source

2015-08-06 16:36:23 +10:00

traps.c

powerpc/book3s/mce: Move add_taint() later in virtual mode

2017-05-25 15:44:43 +02:00

udbg_16550.c

powerpc: Fix bad NULL pointer check in udbg_uart_getc_poll()

2014-11-12 13:47:20 +11:00

udbg.c

powerpc: Remove the celleb support

2015-04-07 17:15:13 +10:00

uprobes.c

…

vdso.c

powerpc/vdso: Fix vdso cpu truncation

2020-08-21 11:02:02 +02:00

vecemu.c

…

vector.S

Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

2016-10-14 14:26:58 -07:00

vio.c

dma-mapping: use unsigned long for dma_attrs

2016-08-04 08:50:07 -04:00

vmlinux.lds.S

powerpc: Include .BTF section

2020-04-02 17:20:21 +02:00