diff options
| author | Hari Bathini <hbathini@linux.ibm.com> | 2022-06-30 12:19:42 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-07-28 16:22:13 +1000 |
| commit | c7255058b5430b5c42932383bd8887d591e7973a (patch) | |
| tree | b02547d7bd2f188ed0e492d7b1dd3fe1165e4186 /arch/powerpc/include/asm | |
| parent | 51ac6d4ceaa4f2e878c1aa399135f2514a6acc24 (diff) | |
powerpc/crash: save cpu register data in crash_smp_send_stop()
During kdump, two set of NMI IPIs are sent to secondary CPUs, if
'crash_kexec_post_notifiers' option is set. The first set of NMI IPIs
to stop the CPUs and the other set to collect register data. Instead,
capture register data for secondary CPUs while stopping them itself.
Also, fallback to smp_send_stop() in case the function gets called
without kdump configured.
Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220630064942.192283-1-hbathini@linux.ibm.com
Diffstat (limited to 'arch/powerpc/include/asm')
| -rw-r--r-- | arch/powerpc/include/asm/kexec.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kexec.h b/arch/powerpc/include/asm/kexec.h index 2aefe14e1442..cce69101205e 100644 --- a/arch/powerpc/include/asm/kexec.h +++ b/arch/powerpc/include/asm/kexec.h @@ -83,6 +83,7 @@ extern void default_machine_crash_shutdown(struct pt_regs *regs); extern int crash_shutdown_register(crash_shutdown_t handler); extern int crash_shutdown_unregister(crash_shutdown_t handler); +extern void crash_kexec_prepare(void); extern void crash_kexec_secondary(struct pt_regs *regs); int __init overlaps_crashkernel(unsigned long start, unsigned long size); extern void reserve_crashkernel(void); |