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8d539b84f1
linux/arch/loongarch/include/asm
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Douglas Anderson 8d539b84f1 nmi_backtrace: allow excluding an arbitrary CPU 
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>
2023-08-18 10:19:00 -07:00
..
vdso LoongArch: Add support to clone a time namespace 2023-06-29 20:58:43 +08:00
acenv.h LoongArch: Add boot and setup routines 2022-06-03 20:09:28 +08:00
acpi.h LoongArch: Export some arch-specific pm interfaces 2023-06-29 20:58:44 +08:00
addrspace.h LoongArch: Fix _CONST64_(x) as unsigned 2023-04-18 19:38:58 +08:00
alternative-asm.h LoongArch: Add alternative runtime patching mechanism 2022-12-14 08:36:11 +08:00
alternative.h LoongArch: Add alternative runtime patching mechanism 2022-12-14 08:36:11 +08:00
asm-extable.h LoongArch: BPF: Add BPF exception tables 2022-12-14 08:36:11 +08:00
asm-offsets.h LoongArch: Add misc common routines 2022-06-03 20:09:28 +08:00
asm-prototypes.h LoongArch: Add other common headers 2022-06-03 20:09:28 +08:00
asm.h LoongArch: Mark some assembler symbols as non-kprobe-able 2023-02-25 22:12:17 +08:00
asmmacro.h LoongArch: Add vector extensions support 2023-06-29 20:58:43 +08:00
atomic.h locking/atomic: treewide: delete arch_atomic_*() kerneldoc 2023-06-05 09:57:24 +02:00
barrier.h LoongArch: Support dbar with different hints 2023-06-29 20:58:44 +08:00
bitops.h LoongArch: Add atomic/locking headers 2022-06-03 20:09:28 +08:00
bitrev.h LoongArch: Add atomic/locking headers 2022-06-03 20:09:28 +08:00
bootinfo.h LoongArch: Clean up plat_swiotlb_setup() related code 2023-04-19 12:07:27 +08:00
branch.h LoongArch: Make compute_return_era() return void 2022-06-25 18:06:07 +08:00
bug.h LoongArch: Use generic BUG() handler 2022-10-12 16:36:19 +08:00
cache.h LoongArch: Add memory management 2022-06-03 20:09:28 +08:00
cacheflush.h LoongArch: Refactor cache probe and flush methods 2022-10-12 16:36:14 +08:00
cacheops.h LoongArch: Refactor cache probe and flush methods 2022-10-12 16:36:14 +08:00
checksum.h LoongArch: Add checksum optimization for 64-bit system 2023-05-01 17:19:43 +08:00
clocksource.h LoongArch: Add other common headers 2022-06-03 20:09:28 +08:00
cmpxchg.h locking/arch: Rename all internal __xchg() names to __arch_xchg() 2023-04-29 09:08:44 +02:00
cpu-features.h LoongArch: Introduce hardware page table walker 2023-06-29 20:58:44 +08:00
cpu-info.h LoongArch: Add SMT (Simultaneous Multi-Threading) support 2023-06-29 20:58:43 +08:00
cpu.h LoongArch: Introduce hardware page table walker 2023-06-29 20:58:44 +08:00
cpufeature.h LoongArch: Add ELF and module support 2022-06-03 20:09:28 +08:00
delay.h LoongArch: Add some library functions 2022-06-03 20:09:28 +08:00
dma-direct.h LoongArch: Add Non-Uniform Memory Access (NUMA) support 2022-06-03 20:09:29 +08:00
dma.h LoongArch: Add PCI controller support 2022-08-12 13:10:11 +08:00
dmi.h LoongArch: Add boot and setup routines 2022-06-03 20:09:28 +08:00
efi.h LoongArch changes for v6.2 2022-12-19 08:23:27 -06:00
elf.h LoongArch: Define ELF relocation types added in ABIv2.0 2022-10-12 16:36:14 +08:00
entry-common.h LoongArch: Add exception/interrupt handling 2022-06-03 20:09:28 +08:00
exec.h LoongArch: Add ELF and module support 2022-06-03 20:09:28 +08:00
extable.h LoongArch: BPF: Add BPF exception tables 2022-12-14 08:36:11 +08:00
fb.h fbdev: Rename fb_mem*() helpers 2023-05-18 11:07:54 +02:00
fixmap.h LoongArch: Use TLB for ioremap() 2022-10-12 16:36:14 +08:00
fpregdef.h LoongArch: Prepare for assemblers with proper FCSR class support 2023-06-29 20:58:43 +08:00
fpu.h LoongArch: Cleanup __builtin_constant_p() checking for cpu_has_* 2023-07-28 10:30:42 +08:00
ftrace.h LoongArch: ftrace: Enable HAVE_FUNCTION_GRAPH_RETVAL 2023-06-20 18:38:38 -04:00
futex.h LoongArch: extable: Add a dedicated uaccess handler 2022-12-14 08:36:11 +08:00
gpr-num.h LoongArch: extable: Also recognize ABI names of registers 2023-06-29 20:58:43 +08:00
hardirq.h LoongArch: Fix the !CONFIG_SMP build 2022-06-08 11:00:40 +08:00
hugetlb.h LoongArch: Add memory management 2022-06-03 20:09:28 +08:00
hw_breakpoint.h LoongArch: Add hardware breakpoints/watchpoints support 2023-02-25 22:12:17 +08:00
hw_irq.h LoongArch: Add exception/interrupt handling 2022-06-03 20:09:28 +08:00
idle.h LoongArch: Add process management 2022-06-03 20:09:28 +08:00
inst.h LoongArch: Add larch_insn_gen_break() to generate break insns 2023-06-29 20:58:44 +08:00
io.h LoongArch: Support dbar with different hints 2023-06-29 20:58:44 +08:00
irq_regs.h LoongArch: Add exception/interrupt handling 2022-06-03 20:09:28 +08:00
irq.h nmi_backtrace: allow excluding an arbitrary CPU 2023-08-18 10:19:00 -07:00
irqflags.h LoongArch: Remove useless header compiler.h 2022-07-29 18:22:32 +08:00
jump_label.h LoongArch: Add jump-label implementation 2023-06-29 20:58:44 +08:00
Kbuild LoongArch: Support dbar with different hints 2023-06-29 20:58:44 +08:00
kdebug.h LoongArch: Remove five DIE_* definitions in kdebug.h 2023-06-29 20:58:44 +08:00
kexec.h LoongArch: Add kexec support 2022-10-12 16:36:19 +08:00
kprobes.h LoongArch: Use larch_insn_gen_break() for kprobes 2023-06-29 20:58:44 +08:00
linkage.h LoongArch: Add other common headers 2022-06-03 20:09:28 +08:00
local.h locking/arch: Wire up local_try_cmpxchg() 2023-04-29 09:09:16 +02:00
loongarch.h LoongArch changes for v6.5 2023-06-30 08:52:28 -07:00
loongson.h LoongArch: Add suspend (ACPI S3) support 2022-12-14 08:41:53 +08:00
mmu_context.h LoongArch: Add process management 2022-06-03 20:09:28 +08:00
mmu.h LoongArch: Add process management 2022-06-03 20:09:28 +08:00
mmzone.h LoongArch: Add Non-Uniform Memory Access (NUMA) support 2022-06-03 20:09:29 +08:00
module.h LoongArch: Add guard for the larch_insn_gen_xxx functions 2023-06-29 20:58:42 +08:00
module.lds.h LoongArch: module: set section addresses to 0x0 2023-04-18 19:38:58 +08:00
numa.h LoongArch: Add Non-Uniform Memory Access (NUMA) support 2022-06-03 20:09:29 +08:00
page.h LoongArch: Add support to clone a time namespace 2023-06-29 20:58:43 +08:00
pci.h LoongArch: Add PCI controller support 2022-08-12 13:10:11 +08:00
percpu.h LoongArch: Tweak CFLAGS for Clang compatibility 2023-06-29 20:58:43 +08:00
perf_event.h LoongArch: Add perf events support 2022-10-12 16:36:14 +08:00
pgalloc.h MIPS&LoongArch&NIOS2: adjust prototypes of p?d_init() 2022-12-11 18:12:11 -08:00
pgtable-bits.h LoongArch: Let pmd_present() return true when splitting pmd 2023-06-15 14:35:52 +08:00
pgtable.h LoongArch: Introduce hardware page table walker 2023-06-29 20:58:44 +08:00
prefetch.h LoongArch: Add other common headers 2022-06-03 20:09:28 +08:00
processor.h LoongArch: ptrace: Add hardware single step support 2023-02-25 22:12:17 +08:00
ptrace.h LoongArch: Add support for function error injection 2023-05-01 17:19:52 +08:00
qspinlock.h LoongArch: Support dbar with different hints 2023-06-29 20:58:44 +08:00
regdef.h
seccomp.h LoongArch: Add system call support 2022-06-03 20:09:28 +08:00
serial.h LoongArch: Add other common headers 2022-06-03 20:09:28 +08:00
setup.h LoongArch: Add support for kernel address space layout randomization (KASLR) 2023-02-25 22:12:17 +08:00
shmparam.h LoongArch: Add memory management 2022-06-03 20:09:28 +08:00
smp.h loongarch/cpu: Mark play_dead() __noreturn 2023-03-06 15:34:06 -08:00
sparsemem.h LoongArch: add sparse memory vmemmap support 2022-12-11 18:12:12 -08:00
spinlock_types.h LoongArch: Add qspinlock support 2022-10-12 16:36:14 +08:00
spinlock.h LoongArch: Add qspinlock support 2022-10-12 16:36:14 +08:00
stackframe.h LoongArch: Add la_abs macro implementation 2023-02-25 22:12:16 +08:00
stackprotector.h LoongArch: Add basic STACKPROTECTOR support 2022-12-14 08:41:53 +08:00
stacktrace.h LoongArch: Add USER_STACKTRACE support 2022-08-12 13:10:11 +08:00
string.h LoongArch: Use alternative to optimize libraries 2022-12-14 08:36:11 +08:00
suspend.h LoongArch: Export some arch-specific pm interfaces 2023-06-29 20:58:44 +08:00
switch_to.h LoongArch: Add hardware breakpoints/watchpoints support 2023-02-25 22:12:17 +08:00
syscall.h LoongArch: Add system call support 2022-06-03 20:09:28 +08:00
thread_info.h LoongArch: Add unaligned access support 2022-12-14 08:36:11 +08:00
time.h LoongArch: Add suspend (ACPI S3) support 2022-12-14 08:41:53 +08:00
timex.h LoongArch: Remove MIPS comment about cycle counter 2022-06-08 11:00:40 +08:00
tlb.h LoongArch: Introduce hardware page table walker 2023-06-29 20:58:44 +08:00
tlbflush.h LoongArch: Add multi-processor (SMP) support 2022-06-03 20:09:29 +08:00
topology.h LoongArch: Add Non-Uniform Memory Access (NUMA) support 2022-06-03 20:09:29 +08:00
types.h LoongArch: Add other common headers 2022-06-03 20:09:28 +08:00
uaccess.h LoongArch: Use la.pcrel instead of la.abs when it's trivially possible 2023-02-25 22:12:16 +08:00
unistd.h LoongArch: Add system call support 2022-06-03 20:09:28 +08:00
unwind.h LoongArch: Add generic ex-handler unwind in prologue unwinder 2023-01-17 11:42:16 +08:00
uprobes.h LoongArch: Add uprobes support 2023-06-29 20:58:44 +08:00
vdso.h LoongArch: Add vDSO syscall __vdso_getcpu() 2022-08-12 13:10:11 +08:00
vermagic.h LoongArch: Add ELF and module support 2022-06-03 20:09:28 +08:00
vmalloc.h LoongArch: Add memory management 2022-06-03 20:09:28 +08:00