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
..
syscalls	cachestat: wire up cachestat for other architectures	2023-06-09 16:25:16 -07:00
.gitignore	…
Makefile	Kbuild updates for v6.1	2022-10-10 12:00:45 -07:00
adi_64.c	…
apc.c	…
asm-offsets.c	…
audit.c	audit: add support for the openat2 syscall	2021-10-01 16:52:48 -04:00
auxio_32.c	…
auxio_64.c	…
btext.c	…
central.c	…
cherrs.S	…
chmc.c	…
compat_audit.c	audit: add support for the openat2 syscall	2021-10-01 16:52:48 -04:00
cpu.c	…
cpumap.c	…
cpumap.h	…
devices.c	…
ds.c	…
dtlb_miss.S	…
dtlb_prot.S	…
ebus.c	…
entry.S	…
entry.h	…
etrap_32.S	…
etrap_64.S	…
fpu_traps.S	…
ftrace.c	ftrace: Cleanup ftrace_dyn_arch_init()	2021-10-08 19:41:39 -04:00
getsetcc.S	…
head_32.S	…
head_64.S	…
helpers.S	…
hvapi.c	…
hvcalls.S	…
hvtramp.S	…
idprom.c	…
iommu-common.c	…
iommu.c	sparc/iommu: don't set failed sg dma_address to DMA_MAPPING_ERROR	2021-08-09 17:13:06 +02:00
iommu_common.h	…
ioport.c	sparc64: Replace all non-returning strlcpy with strscpy	2023-06-14 12:04:06 -07:00
irq.h	…
irq_32.c	…
irq_64.c	asm-generic: Conditionally enable do_softirq_own_stack() via Kconfig.	2022-09-05 17:20:55 +02:00
itlb_miss.S	…
ivec.S	…
jump_label.c	…
kernel.h	init: consolidate prototypes in linux/init.h	2023-06-09 17:44:16 -07:00
kgdb_32.c	…
kgdb_64.c	…
kprobes.c	kprobes: treewide: Make it harder to refer kretprobe_trampoline directly	2021-09-30 21:24:06 -04:00
kstack.h	…
ktlb.S	…
ldc.c	…
led.c	proc: make the proc_create[_data]() stubs static inlines	2022-01-20 08:52:52 +02:00
leon_kernel.c	…
leon_pci.c	PCI: Introduce pci_dev_for_each_resource()	2023-04-04 10:43:52 -05:00
leon_pci_grpci1.c	…
leon_pci_grpci2.c	…
leon_pmc.c	arch/idle: Change arch_cpu_idle() behavior: always exit with IRQs disabled	2023-01-13 11:48:15 +01:00
leon_smp.c	sparc: Unbreak the build	2022-09-29 19:21:10 -07:00
mdesc.c	sparc: avoid stringop-overread errors	2021-09-15 13:42:33 -07:00
misctrap.S	…
module.c	jump_label: mips: move module NOP patching into arch code	2022-06-24 09:48:55 +02:00
nmi.c	watchdog/hardlockup: HAVE_NMI_WATCHDOG must implement watchdog_hardlockup_probe()	2023-06-19 16:25:26 -07:00
of_device_32.c	sparc: Use of_property_present() for testing DT property presence	2023-04-18 11:23:21 -05:00
of_device_64.c	sparc: Use of_property_present() for testing DT property presence	2023-04-18 11:23:21 -05:00
of_device_common.c	sparc: Use of_property_present() for testing DT property presence	2023-04-18 11:23:21 -05:00
of_device_common.h	…
pci.c	PCI: Introduce pci_dev_for_each_resource()	2023-04-04 10:43:52 -05:00
pci_common.c	…
pci_fire.c	…
pci_impl.h	…
pci_msi.c	genirq/msi, treewide: Use a named struct for PCI/MSI attributes	2021-12-09 11:52:21 +01:00
pci_psycho.c	…
pci_sabre.c	…
pci_schizo.c	sparc: Use of_property_read_bool() for boolean properties	2023-04-18 11:23:24 -05:00
pci_sun4v.c	mm, treewide: redefine MAX_ORDER sanely	2023-04-05 19:42:46 -07:00
pci_sun4v.h	…
pci_sun4v_asm.S	…
pcic.c	PCI: Introduce pci_dev_for_each_resource()	2023-04-04 10:43:52 -05:00
pcr.c	…
perf_event.c	…
pmc.c	…
power.c	sparc: Use of_property_read_bool() for boolean properties	2023-04-18 11:23:24 -05:00
process.c	…
process_32.c	arch/idle: Change arch_cpu_idle() behavior: always exit with IRQs disabled	2023-01-13 11:48:15 +01:00
process_64.c	nmi_backtrace: allow excluding an arbitrary CPU	2023-08-18 10:19:00 -07:00
prom.h	…
prom_32.c	…
prom_64.c	sparc: Use of_property_present() for testing DT property presence	2023-04-18 11:23:21 -05:00
prom_common.c	…
prom_irqtrans.c	…
psycho_common.c	…
psycho_common.h	…
ptrace_32.c	sparc: ptrace: user_regset_copyin_ignore() always returns 0	2022-11-15 14:30:41 -08:00
ptrace_64.c	sparc: ptrace: user_regset_copyin_ignore() always returns 0	2022-11-15 14:30:41 -08:00
reboot.c	…
rtrap_32.S	…
rtrap_64.S	context_tracking: Split user tracking Kconfig	2022-06-29 17:04:09 -07:00
sbus.c	…
setup_32.c	hardening updates for v6.5-rc1	2023-06-27 21:24:18 -07:00
setup_64.c	sparc64: Replace all non-returning strlcpy with strscpy	2023-06-14 12:04:06 -07:00
signal32.c	sparc: allow pte_offset_map() to fail	2023-06-19 16:19:09 -07:00
signal_32.c	ptrace: Cleanups for v5.18	2022-03-28 17:29:53 -07:00
signal_64.c	signal: Deliver SIGTRAP on perf event asynchronously if blocked	2022-04-22 12:14:05 +02:00
sigutil.h	…
sigutil_32.c	…
sigutil_64.c	…
smp_32.c	treewide: Trace IPIs sent via smp_send_reschedule()	2023-03-24 11:01:28 +01:00
smp_64.c	treewide: Trace IPIs sent via smp_send_reschedule()	2023-03-24 11:01:28 +01:00
sparc_ksyms.c	…
spiterrs.S	…
sstate.c	…
stacktrace.c	…
starfire.c	…
sun4d_irq.c	…
sun4d_smp.c	sparc: Unbreak the build	2022-09-29 19:21:10 -07:00
sun4m_irq.c	…
sun4m_smp.c	sparc: Unbreak the build	2022-09-29 19:21:10 -07:00
sun4v_ivec.S	…
sun4v_mcd.S	…
sun4v_tlb_miss.S	…
sys32.S	…
sys_sparc32.c	…
sys_sparc_32.c	signal/sparc: si_trapno is only used with SIGILL ILL_ILLTRP	2021-07-23 13:08:57 -05:00
sys_sparc_64.c	signal/sparc: si_trapno is only used with SIGILL ILL_ILLTRP	2021-07-23 13:08:57 -05:00
syscalls.S	…
sysfs.c	drivers/base/node: consolidate node device subsystem initialization in node_dev_init()	2022-03-22 15:57:10 -07:00
systbls.h	…
systbls_32.S	…
systbls_64.S	…
termios.c	termios: start unifying non-UAPI parts of asm/termios.h	2022-09-09 10:44:34 +02:00
time_32.c	sparc: Use of_property_present() for testing DT property presence	2023-04-18 11:23:21 -05:00
time_64.c	…
trampoline_32.S	…
trampoline_64.S	…
traps_32.c	exit: Add and use make_task_dead.	2021-12-13 12:04:45 -06:00
traps_64.c	mm, treewide: redefine MAX_ORDER sanely	2023-04-05 19:42:46 -07:00
tsb.S	…
ttable_32.S	…
ttable_64.S	…
una_asm_32.S	…
una_asm_64.S	…
unaligned_32.c	signal/sparc: si_trapno is only used with SIGILL ILL_ILLTRP	2021-07-23 13:08:57 -05:00
unaligned_64.c	…
uprobes.c	…
urtt_fill.S	…
utrap.S	…
vdso.c	…
vio.c	driver core: make struct bus_type.uevent() take a const *	2023-01-27 13:45:52 +01:00
viohs.c	…
visemul.c	…
vmlinux.lds.S	objtool/idle: Validate __cpuidle code as noinstr	2023-01-13 11:48:15 +01:00
windows.c	signal: Replace force_fatal_sig with force_exit_sig when in doubt	2021-11-19 09:15:58 -06:00
winfixup.S	…
wof.S	…
wuf.S	…