diff options
Diffstat (limited to 'arch/blackfin/mach-common/smp.c')
| -rw-r--r-- | arch/blackfin/mach-common/smp.c | 44 |
1 files changed, 14 insertions, 30 deletions
diff --git a/arch/blackfin/mach-common/smp.c b/arch/blackfin/mach-common/smp.c index 349ee3f..369e687 100644 --- a/arch/blackfin/mach-common/smp.c +++ b/arch/blackfin/mach-common/smp.c @@ -1,24 +1,10 @@ /* - * File: arch/blackfin/kernel/smp.c - * Author: Philippe Gerum <rpm@xenomai.org> - * IPI management based on arch/arm/kernel/smp.c. + * IPI management based on arch/arm/kernel/smp.c (Copyright 2002 ARM Limited) * - * Copyright 2007 Analog Devices Inc. + * Copyright 2007-2009 Analog Devices Inc. + * Philippe Gerum <rpm@xenomai.org> * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see the file COPYING, or write - * to the Free Software Foundation, Inc., - * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * Licensed under the GPL-2. */ #include <linux/module.h> @@ -290,10 +276,9 @@ void smp_send_reschedule(int cpu) if (cpu_is_offline(cpu)) return; - msg = kmalloc(sizeof(*msg), GFP_ATOMIC); + msg = kzalloc(sizeof(*msg), GFP_ATOMIC); if (!msg) return; - memset(msg, 0, sizeof(msg)); INIT_LIST_HEAD(&msg->list); msg->type = BFIN_IPI_RESCHEDULE; @@ -319,10 +304,9 @@ void smp_send_stop(void) if (cpus_empty(callmap)) return; - msg = kmalloc(sizeof(*msg), GFP_ATOMIC); + msg = kzalloc(sizeof(*msg), GFP_ATOMIC); if (!msg) return; - memset(msg, 0, sizeof(msg)); INIT_LIST_HEAD(&msg->list); msg->type = BFIN_IPI_CPU_STOP; @@ -352,13 +336,6 @@ int __cpuinit __cpu_up(unsigned int cpu) ret = platform_boot_secondary(cpu, idle); - if (ret) { - cpu_clear(cpu, cpu_present_map); - printk(KERN_CRIT "CPU%u: processor failed to boot (%d)\n", cpu, ret); - free_task(idle); - } else - cpu_set(cpu, cpu_online_map); - secondary_stack = NULL; return ret; @@ -434,9 +411,16 @@ void __cpuinit secondary_start_kernel(void) setup_secondary(cpu); + platform_secondary_init(cpu); + local_irq_enable(); - platform_secondary_init(cpu); + /* + * Calibrate loops per jiffy value. + * IRQs need to be enabled here - D-cache can be invalidated + * in timer irq handler, so core B can read correct jiffies. + */ + calibrate_delay(); cpu_idle(); } |
