Douglas Anderson 4d880fc4a2 nmi_backtrace: allow excluding an arbitrary CPU ... [ Upstream commit 8d539b84f1 ] The APIs that allow backtracing across CPUs have always had a way to exclude the current CPU. This convenience means callers didn't need to find a place to allocate a CPU mask just to handle the common case. Let's extend the API to take a CPU ID to exclude instead of just a boolean. This isn't any more complex for the API to handle and allows the hardlockup detector to exclude a different CPU (the one it already did a trace for) without needing to find space for a CPU mask. Arguably, this new API also encourages safer behavior. Specifically if the caller wants to avoid tracing the current CPU (maybe because they already traced the current CPU) this makes it more obvious to the caller that they need to make sure that the current CPU ID can't change. [akpm@linux-foundation.org: fix trigger_allbutcpu_cpu_backtrace() stub] Link: https://lkml.kernel.org/r/20230804065935.v4.1.Ia35521b91fc781368945161d7b28538f9996c182@changeid Signed-off-by: Douglas Anderson <dianders@chromium.org> Acked-by: Michal Hocko <mhocko@suse.com> Cc: kernel test robot <lkp@intel.com> Cc: Lecopzer Chen <lecopzer.chen@mediatek.com> Cc: Petr Mladek <pmladek@suse.com> Cc: Pingfan Liu <kernelfans@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Stable-dep-of: 1f38c86bb2 ("watchdog/hardlockup: avoid large stack frames in watchdog_hardlockup_check()") Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-09-13 09:53:08 +02:00
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adi.h
adi_64.h
apb.h
asm-offsets.h
asm-prototypes.h
asm.h
asmmacro.h
atomic.h
atomic_32.h	locking/atomic: sparc: add preprocessor symbols	2023-06-05 09:57:17 +02:00
atomic_64.h	locking/atomic: sparc: add preprocessor symbols	2023-06-05 09:57:17 +02:00
auxio.h
auxio_32.h
auxio_64.h
backoff.h
barrier.h
barrier_32.h
barrier_64.h
bbc.h
bitext.h
bitops.h
bitops_32.h	bitops: wrap non-atomic bitops with a transparent macro	2022-06-30 19:52:41 -07:00
bitops_64.h	include: move find.h from asm_generic to linux	2022-01-15 08:47:31 -08:00
btext.h
bug.h
cache.h	treewide: Convert macro and uses of __section(foo) to __section("foo")	2020-10-25 14:51:49 -07:00
cacheflush.h
cacheflush_32.h	sparc: cacheflush_32.h needs struct page	2022-04-23 09:27:17 -07:00
cacheflush_64.h
cachetlb_32.h
chafsr.h
checksum.h	sparc64: propagate the calling convention changes down to __csum_partial_copy_...()	2020-08-20 15:45:21 -04:00
checksum_32.h	sparc64: propagate the calling convention changes down to __csum_partial_copy_...()	2020-08-20 15:45:21 -04:00
checksum_64.h	sparc64: propagate the calling convention changes down to __csum_partial_copy_...()	2020-08-20 15:45:21 -04:00
chmctrl.h
clock.h
clocksource.h
cmpxchg.h
cmpxchg_32.h	sparc: mark __arch_xchg() as __always_inline	2023-07-13 09:54:32 -07:00
cmpxchg_64.h	sparc: mark __arch_xchg() as __always_inline	2023-07-13 09:54:32 -07:00
compat.h	asm-generic: compat: Cleanup duplicate definitions	2022-04-26 13:35:54 -07:00
compat_signal.h
contregs.h
cpu_type.h
cpudata.h
cpudata_32.h
cpudata_64.h
current.h
dcr.h
dcu.h
delay.h
delay_32.h
delay_64.h
device.h
dma-mapping.h	dma-mapping: no need to pass a bus_type into get_arch_dma_ops()	2023-02-15 12:35:20 +01:00
dma.h	PCI: Move isa_dma_bridge_buggy out of asm/dma.h	2022-07-22 17:24:47 -05:00
ebus_dma.h
ecc.h
eeprom.h
elf.h
elf_32.h
elf_64.h	sparc32: switch to generic extables	2021-01-03 20:05:18 -05:00
estate.h
extable.h	sparc32: switch to generic extables	2021-01-03 20:05:18 -05:00
fb.h	fbdev: Rename fb_mem*() helpers	2023-05-18 11:07:54 +02:00
fbio.h
fhc.h
floppy.h
floppy_32.h
floppy_64.h
fpumacro.h
ftrace.h	tracing: Fix various typos in comments	2021-03-23 14:08:18 -04:00
futex.h
futex_32.h
futex_64.h
hardirq.h
hardirq_32.h
hardirq_64.h
head.h
head_32.h
head_64.h
hibernate.h
highmem.h	sparc/mm/highmem: flush cache and TLB	2021-01-24 10:34:52 -08:00
hugetlb.h	mm: change huge_ptep_clear_flush() to return the original pte	2022-05-13 16:48:55 -07:00
hvtramp.h
hw_irq.h
hypervisor.h
ide.h	mm: remove unneeded includes of <asm/pgalloc.h>	2020-08-07 11:33:26 -07:00
idprom.h
intr_queue.h
io-unit.h
io.h	sparc: Fix the generic IO helpers	2022-09-08 16:49:14 +02:00
io_32.h	sparc32: Move ioremap/iounmap declaration before asm-generic/io.h include	2020-10-05 09:44:41 +01:00
io_64.h	sparc: Fix the generic IO helpers	2022-09-08 16:49:14 +02:00
ioctls.h
iommu-common.h
iommu.h
iommu_32.h
iommu_64.h
irq.h
irq_32.h	init: consolidate prototypes in linux/init.h	2023-06-09 17:44:16 -07:00
irq_64.h	nmi_backtrace: allow excluding an arbitrary CPU	2023-09-13 09:53:08 +02:00
irqflags.h
irqflags_32.h
irqflags_64.h
jump_label.h
Kbuild	char/agp: introduce asm-generic/agp.h	2023-02-13 22:13:29 +01:00
kdebug.h
kdebug_32.h
kdebug_64.h
kgdb.h
kprobes.h	kprobes: treewide: Make it harder to refer kretprobe_trampoline directly	2021-09-30 21:24:06 -04:00
ldc.h
leon.h
leon_amba.h
leon_pci.h
lsu.h
machines.h
mbus.h
mc146818rtc.h
mc146818rtc_32.h
mc146818rtc_64.h
mdesc.h
memctrl.h
mman.h	sparc/mm: enable ARCH_HAS_VM_GET_PAGE_PROT	2022-04-28 23:16:13 -07:00
mmu.h
mmu_32.h
mmu_64.h
mmu_context.h
mmu_context_32.h	sparc: use asm-generic/mmu_context.h for no-op implementations	2020-10-27 16:02:38 +01:00
mmu_context_64.h	mm: Expose untagging mask in /proc/$PID/status	2023-03-16 13:08:40 -07:00
mmzone.h	mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA	2021-06-29 10:53:55 -07:00
mxcc.h
nmi.h	watchdog/hardlockup: declare arch_touch_nmi_watchdog() only in linux/nmi.h	2023-06-19 16:25:29 -07:00
ns87303.h
obio.h
openprom.h
oplib.h
oplib_32.h
oplib_64.h
page.h
page_32.h	mm, arch: add generic implementation of pfn_valid() for FLATMEM	2023-02-09 16:51:41 -08:00
page_64.h
parport.h
pbm.h
pci.h	Merge branch 'pci/header-cleanup-immutable'	2022-08-04 11:46:53 -05:00
pcic.h
pcr.h
percpu.h
percpu_32.h
percpu_64.h
perf_event.h
pgalloc.h
pgalloc_32.h	mm/thp: define default pmd_pgtable()	2021-07-01 11:06:03 -07:00
pgalloc_64.h	mm/thp: define default pmd_pgtable()	2021-07-01 11:06:03 -07:00
pgtable.h
pgtable_32.h	mm: remove __HAVE_ARCH_PTE_SWP_EXCLUSIVE	2023-02-02 22:33:11 -08:00
pgtable_64.h	sparc/mm: don't unconditionally set HW writable bit when setting PTE dirty on 64bit	2023-04-18 16:30:00 -07:00
pgtsrmmu.h	sparc/mm: support __HAVE_ARCH_PTE_SWP_EXCLUSIVE on 32bit	2023-02-02 22:33:10 -08:00
pil.h
processor.h
processor_32.h	kernel: exit: cleanup release_thread()	2022-09-11 21:55:07 -07:00
processor_64.h	locking: remove spin_lock_prefetch	2023-08-12 09:18:47 -07:00
prom.h	of: Make devtree_lock declaration private	2023-04-10 18:32:31 -05:00
psr.h
ptrace.h	ptrace: Remove the unnecessary arguments from arch_ptrace_stop	2021-10-06 11:27:41 -05:00
qrwlock.h
qspinlock.h
ross.h
sbi.h
scratchpad.h
seccomp.h
sections.h
setup.h
sfafsr.h
sfp-machine.h
sfp-machine_32.h
sfp-machine_64.h
shmparam.h
shmparam_32.h
shmparam_64.h
sigcontext.h
signal.h	sparc: remove SA_STATIC_ALLOC macro definition	2020-09-14 17:04:49 -07:00
smp.h
smp_32.h	sparc: Unbreak the build	2022-09-29 19:21:10 -07:00
smp_64.h	sparc/cpu: Mark cpu_play_dead() __noreturn	2023-03-08 08:44:25 -08:00
sparsemem.h	sparc: drop unused MAX_PHYSADDR_BITS	2020-08-12 10:57:57 -07:00
spinlock.h
spinlock_32.h
spinlock_64.h	locking/arch: Move qrwlock.h include after qspinlock.h	2021-02-11 07:59:54 -05:00
spinlock_types.h
spitfire.h
stacktrace.h
starfire.h
string.h
string_32.h
string_64.h
sunbpp.h
swift.h
switch_to.h
switch_to_32.h
switch_to_64.h	sparc64: remove CONFIG_SET_FS support	2022-02-25 09:36:06 +01:00
syscall.h	arch: remove unused function syscall_set_arguments()	2021-09-14 16:06:20 +02:00
syscalls.h
termbits.h
thread_info.h
thread_info_32.h	sparc: add support for TIF_NOTIFY_SIGNAL	2020-12-12 09:17:38 -07:00
thread_info_64.h	sparc64: remove CONFIG_SET_FS support	2022-02-25 09:36:06 +01:00
timer.h
timer_32.h
timer_64.h	init: consolidate prototypes in linux/init.h	2023-06-09 17:44:16 -07:00
timex.h
timex_32.h	sparc: use fallback for random_get_entropy() instead of zero	2022-05-13 23:59:23 +02:00
timex_64.h
tlb.h
tlb_32.h
tlb_64.h	mmu_gather: Remove per arch tlb_{start,end}_vma()	2022-07-21 10:50:13 -07:00
tlbflush.h
tlbflush_32.h
tlbflush_64.h
topology.h
topology_32.h
topology_64.h
trap_block.h
traps.h
tsb.h
tsunami.h
ttable.h
turbosparc.h
uaccess.h	uaccess: generalize access_ok()	2022-02-25 09:36:05 +01:00
uaccess_32.h	uaccess: remove CONFIG_SET_FS	2022-02-25 09:36:06 +01:00
uaccess_64.h	mm: Introduce untagged_addr_remote()	2023-03-16 13:08:39 -07:00
unistd.h	fs: stat: compat: Add __ARCH_WANT_COMPAT_STAT	2022-04-26 13:35:45 -07:00
upa.h
uprobes.h
user.h
vaddrs.h	sparc/mm/highmem: Switch to generic kmap atomic	2020-11-06 23:14:57 +01:00
vdso.h
vga.h
viking.h
vio.h	vio: move to_vio_dev() to use container_of_const()	2023-01-27 13:45:41 +01:00
visasm.h
vmalloc.h
vvar.h
winmacro.h
xor.h
xor_32.h	lib/xor: make xor prototypes more friendly to compiler vectorization	2022-02-11 20:39:39 +11:00
xor_64.h	lib/xor: make xor prototypes more friendly to compiler vectorization	2022-02-11 20:39:39 +11:00