diff options
| -rw-r--r-- | arch/mips/cavium-octeon/setup.c | 14 | ||||
| -rw-r--r-- | arch/mips/include/asm/kexec.h | 1 | ||||
| -rw-r--r-- | arch/mips/kernel/crash.c | 18 | ||||
| -rw-r--r-- | arch/mips/kernel/machine_kexec.c | 1 |
4 files changed, 33 insertions, 1 deletions
diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c index cd7101fb6227..6b9c608cdff1 100644 --- a/arch/mips/cavium-octeon/setup.c +++ b/arch/mips/cavium-octeon/setup.c @@ -251,6 +251,17 @@ static void octeon_crash_shutdown(struct pt_regs *regs) default_machine_crash_shutdown(regs); } +#ifdef CONFIG_SMP +void octeon_crash_smp_send_stop(void) +{ + int cpu; + + /* disable watchdogs */ + for_each_online_cpu(cpu) + cvmx_write_csr(CVMX_CIU_WDOGX(cpu_logical_map(cpu)), 0); +} +#endif + #endif /* CONFIG_KEXEC */ #ifdef CONFIG_CAVIUM_RESERVE32 @@ -864,6 +875,9 @@ void __init prom_init(void) _machine_kexec_shutdown = octeon_shutdown; _machine_crash_shutdown = octeon_crash_shutdown; _machine_kexec_prepare = octeon_kexec_prepare; +#ifdef CONFIG_SMP + _crash_smp_send_stop = octeon_crash_smp_send_stop; +#endif #endif octeon_user_io_init(); diff --git a/arch/mips/include/asm/kexec.h b/arch/mips/include/asm/kexec.h index b6a4d4aa548f..cfdbe66575f4 100644 --- a/arch/mips/include/asm/kexec.h +++ b/arch/mips/include/asm/kexec.h @@ -45,6 +45,7 @@ extern const unsigned char kexec_smp_wait[]; extern unsigned long secondary_kexec_args[4]; extern void (*relocated_kexec_smp_wait) (void *); extern atomic_t kexec_ready_to_reboot; +extern void (*_crash_smp_send_stop)(void); #endif #endif diff --git a/arch/mips/kernel/crash.c b/arch/mips/kernel/crash.c index 93c46c9cebb7..e757f36cea6f 100644 --- a/arch/mips/kernel/crash.c +++ b/arch/mips/kernel/crash.c @@ -50,9 +50,14 @@ static void crash_shutdown_secondary(void *passed_regs) static void crash_kexec_prepare_cpus(void) { + static int cpus_stopped; unsigned int msecs; + unsigned int ncpus; - unsigned int ncpus = num_online_cpus() - 1;/* Excluding the panic cpu */ + if (cpus_stopped) + return; + + ncpus = num_online_cpus() - 1;/* Excluding the panic cpu */ dump_send_ipi(crash_shutdown_secondary); smp_wmb(); @@ -67,6 +72,17 @@ static void crash_kexec_prepare_cpus(void) cpu_relax(); mdelay(1); } + + cpus_stopped = 1; +} + +/* Override the weak function in kernel/panic.c */ +void crash_smp_send_stop(void) +{ + if (_crash_smp_send_stop) + _crash_smp_send_stop(); + + crash_kexec_prepare_cpus(); } #else /* !defined(CONFIG_SMP) */ diff --git a/arch/mips/kernel/machine_kexec.c b/arch/mips/kernel/machine_kexec.c index 92bc066e47a3..32b567e88b02 100644 --- a/arch/mips/kernel/machine_kexec.c +++ b/arch/mips/kernel/machine_kexec.c @@ -25,6 +25,7 @@ void (*_machine_crash_shutdown)(struct pt_regs *regs) = NULL; #ifdef CONFIG_SMP void (*relocated_kexec_smp_wait) (void *); atomic_t kexec_ready_to_reboot = ATOMIC_INIT(0); +void (*_crash_smp_send_stop)(void) = NULL; #endif int |