Yufen Wang c871547ec2 ARM: 8808/1: kexec:offline panic_smp_self_stop CPU ...

[ Upstream commit 82c08c3e7f ]

In case panic() and panic() called at the same time on different CPUS.
For example:
CPU 0:
  panic()
     __crash_kexec
       machine_crash_shutdown
         crash_smp_send_stop
       machine_kexec
         BUG_ON(num_online_cpus() > 1);

CPU 1:
  panic()
    local_irq_disable
    panic_smp_self_stop

If CPU 1 calls panic_smp_self_stop() before crash_smp_send_stop(), kdump
fails. CPU1 can't receive the ipi irq, CPU1 will be always online.
To fix this problem, this patch split out the panic_smp_self_stop()
and add set_cpu_online(smp_processor_id(), false).

Signed-off-by: Yufen Wang <wangyufen@huawei.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2019-02-12 19:45:57 +01:00

..

.gitignore

…

arch_timer.c

arch_timer: Move to generic sched_clock framework

2013-10-09 16:54:10 -07:00

armksyms.c

ARM: implement memset32 & memset64

2017-09-08 18:26:48 -07:00

asm-offsets.c

ARM: save and reset the address limit when entering an exception

2016-07-07 16:01:01 +01:00

atags_compat.c

ARM: convert printk(KERN_* to pr_*

2014-11-21 15:24:50 +00:00

atags_parse.c

ARM: fix rd_size declaration

2017-07-10 16:32:34 -07:00

atags_proc.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

atags.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

bios32.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

bugs.c

ARM: bugs: add support for per-processor bug checking

2018-10-18 09:16:26 +02:00

cpuidle.c

ARM: Convert to using %pOF instead of full_name

2017-08-16 22:25:30 +02:00

crash_dump.c

ARM: 8012/1: kdump: Avoid overflow when converting pfn to physaddr

2014-04-07 12:10:00 +01:00

debug.S

ARM: 8704/1: semihosting: use proper instruction on v7m processors

2017-10-12 11:28:29 +01:00

devtree.c

ARM: Convert to using %pOF instead of full_name

2017-08-16 22:25:30 +02:00

dma-isa.c

ARM: convert printk(KERN_* to pr_*

2014-11-21 15:24:50 +00:00

dma.c

ARM: convert printk(KERN_* to pr_*

2014-11-21 15:24:50 +00:00

early_printk.c

early_printk: consolidate random copies of identical code

2013-04-29 18:28:13 -07:00

efi.c

ARM/efi: Apply strict permissions for UEFI Runtime Services regions

2016-04-28 11:33:53 +02:00

elf.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

entry-armv.S

Merge branches 'fixes' and 'misc' into for-linus

2017-09-09 16:34:41 +01:00

entry-common.S

ARM: spectre-v1: fix syscall entry

2018-10-18 09:16:27 +02:00

entry-ftrace.S

ARM: 8678/1: ftrace: Adds support for CONFIG_DYNAMIC_FTRACE_WITH_REGS

2017-06-18 22:25:16 +01:00

entry-header.S

ARM: spectre-v1: fix syscall entry

2018-10-18 09:16:27 +02:00

entry-v7m.S

ARM: rename S_FRAME_SIZE to PT_REGS_SIZE

2016-06-22 19:54:28 +01:00

fiq.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

fiqasm.S

ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+

2014-07-18 12:29:04 +01:00

ftrace.c

ARM: 8678/1: ftrace: Adds support for CONFIG_DYNAMIC_FTRACE_WITH_REGS

2017-06-18 22:25:16 +01:00

head-common.S

ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+

2014-07-18 12:29:04 +01:00

head-nommu.S

ARM: 8649/2: nommu: remove Hivecs configuration is asm

2017-02-28 11:06:15 +00:00

head.S

ARM: align .data section

2017-08-14 16:22:55 +01:00

hibernate.c

ARM: use virt_to_idmap() for soft_restart()

2016-02-08 15:48:32 +00:00

hw_breakpoint.c

ARM/hw_breakpoint: Fix possible recursive locking for arch_hw_breakpoint_init

2017-06-20 12:25:22 +02:00

hyp-stub.S

ARM: align .data section

2017-08-14 16:22:55 +01:00

insn.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

io.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

irq.c

ARM: 8499/1: irq: l2c: do not print error in case of missing l2c from

2016-01-26 23:49:02 +00:00

isa.c

arm: convert use of typedef ctl_table to struct ctl_table

2014-06-06 16:08:15 -07:00

iwmmxt.S

ARM: align .data section

2017-08-14 16:22:55 +01:00

jump_label.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

kgdb.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

machine_kexec.c

ARM: kexec: fix kdump register saving on panic()

2018-06-21 04:03:01 +09:00

Makefile

ARM: bugs: prepare processor bug infrastructure

2018-10-18 09:16:26 +02:00

module-plts.c

ARM: 8662/1: module: split core and init PLT sections

2017-03-17 10:01:28 +00:00

module.c

ARM: Silence first allocation with CONFIG_ARM_MODULE_PLTS=y

2017-05-11 14:43:31 +01:00

module.lds

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

opcodes.c

ARM: 7206/1: Add generic ARM instruction set condition code checks.

2011-12-13 08:52:02 +00:00

paravirt.c

arm: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops

2015-12-21 14:40:54 +00:00

patch.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

perf_callchain.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

perf_event_v6.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

perf_event_v7.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

perf_event_xscale.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

perf_regs.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

pj4-cp0.c

ARM: 8452/3: PJ4: make coprocessor access sequences buildable in Thumb2 mode

2016-01-04 11:12:10 +00:00

process.c

ARM: 8683/1: ARM32: Support mremap() for sigpage/vDSO

2017-06-21 13:02:58 +01:00

psci_smp.c

ARM: use const and __initconst for smp_operations

2015-12-01 22:17:45 +01:00

ptrace.c

sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>

2017-03-02 08:42:36 +01:00

reboot.c

ARM: soft-reboot into same mode that we entered the kernel

2017-04-09 07:49:24 -07:00

reboot.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

relocate_kernel.S

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

return_address.c

ARM: 8328/1: remove empty preprocessor #else branch

2015-03-28 16:54:53 +00:00

setup.c

ARM: kexec: avoid allocating crashkernel region outside lowmem

2017-07-20 11:37:15 +01:00

signal.c

ARM: vfp: use __copy_from_user() when restoring VFP state

2018-10-18 09:16:28 +02:00

sigreturn_codes.S

ARM: 7895/1: signal: fix armv7-m build issue in sigreturn_codes.S

2013-11-30 22:21:00 +00:00

sleep.S

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

smccc-call.S

arm: kernel: Add SMC structure parameter

2017-02-03 18:46:33 +00:00

smp_scu.c

ARM: 8122/1: smp_scu: enable SCU standby support

2014-08-02 08:51:53 +01:00

smp_tlb.c

ARM: 8613/1: Fix the uaccess crash on PB11MPCore

2017-01-16 17:30:46 +00:00

smp_twd.c

clocksource/drivers: Rename CLOCKSOURCE_OF_DECLARE to TIMER_OF_DECLARE

2017-06-14 11:58:45 +02:00

smp.c

ARM: 8808/1: kexec:offline panic_smp_self_stop CPU

2019-02-12 19:45:57 +01:00

stacktrace.c

ARM: 8691/1: Export save_stack_trace_tsk()

2017-09-09 16:26:42 +01:00

suspend.c

ARM: bugs: hook processor bug checking into SMP and suspend paths

2018-10-18 09:16:26 +02:00

swp_emulate.c

sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h>

2017-03-02 08:42:37 +01:00

sys_arm.c

arm: switch to generic fork/vfork/clone

2012-11-28 22:13:54 -05:00

sys_oabi-compat.c

ARM: oabi-compat: copy semops using __copy_from_user()

2018-10-18 09:16:28 +02:00

tcm.c

ARM: 8388/1: tcm: Don't crash when TCM banks are protected by TrustZone

2015-06-06 10:37:28 +01:00

thumbee.c

ARM: convert printk(KERN_* to pr_*

2014-11-21 15:24:50 +00:00

time.c

clocksource/drivers: Rename clocksource_probe to timer_probe

2017-06-14 11:59:16 +02:00

topology.c

ARM: Convert to using %pOF instead of full_name

2017-08-16 22:25:30 +02:00

traps.c

ARM: 8771/1: kprobes: Prohibit kprobes on do_undefinstr

2018-05-22 18:54:00 +02:00

unwind.c

ARM: 8176/1: Use current_stack_pointer in unwind_backtrace

2014-11-13 23:58:09 +00:00

v7m.c

ARM: 7828/1: ARMv7-M: implement restart routine common to all v7-M machines

2013-09-02 13:49:29 +01:00

vdso.c

ARM: 8748/1: mm: Define vdso_start, vdso_end as array

2018-05-30 07:52:20 +02:00

vmlinux-xip.lds.S

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

vmlinux.lds.S

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

xscale-cp0.c

ARM: make xscale iwmmxt code multiplatform aware

2015-12-01 21:44:24 +01:00