diff options
Diffstat (limited to 'arch/powerpc/kernel/smp.c')
| -rw-r--r-- | arch/powerpc/kernel/smp.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index a90df6bf0940..8e3ca674d359 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -75,6 +75,8 @@ void smp_call_function_interrupt(void); int smt_enabled_at_boot = 1; +static void (*crash_ipi_function_ptr)(struct pt_regs *) = NULL; + #ifdef CONFIG_MPIC int __init smp_mpic_probe(void) { @@ -123,11 +125,16 @@ void smp_message_recv(int msg, struct pt_regs *regs) /* XXX Do we have to do this? */ set_need_resched(); break; -#ifdef CONFIG_DEBUGGER case PPC_MSG_DEBUGGER_BREAK: + if (crash_ipi_function_ptr) { + crash_ipi_function_ptr(regs); + break; + } +#ifdef CONFIG_DEBUGGER debugger_ipi(regs); break; -#endif +#endif /* CONFIG_DEBUGGER */ + /* FALLTHROUGH */ default: printk("SMP %d: smp_message_recv(): unknown msg %d\n", smp_processor_id(), msg); @@ -147,6 +154,17 @@ void smp_send_debugger_break(int cpu) } #endif +#ifdef CONFIG_KEXEC +void crash_send_ipi(void (*crash_ipi_callback)(struct pt_regs *)) +{ + crash_ipi_function_ptr = crash_ipi_callback; + if (crash_ipi_callback) { + mb(); + smp_ops->message_pass(MSG_ALL_BUT_SELF, PPC_MSG_DEBUGGER_BREAK); + } +} +#endif + static void stop_this_cpu(void *dummy) { local_irq_disable(); |