提交 84ec6d57 编写于 作者: T Thomas Gleixner

arm: Use generic idle thread allocation

Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Russell King <linux@arm.linux.org.uk>
Tested-by: NFrank Rowand <frank.rowand@am.sony.com>
Link: http://lkml.kernel.org/r/20120420124557.448826362@linutronix.de
上级 13583bf1
...@@ -34,6 +34,7 @@ config ARM ...@@ -34,6 +34,7 @@ config ARM
select CPU_PM if (SUSPEND || CPU_IDLE) select CPU_PM if (SUSPEND || CPU_IDLE)
select GENERIC_PCI_IOMAP select GENERIC_PCI_IOMAP
select HAVE_BPF_JIT if NET select HAVE_BPF_JIT if NET
select GENERIC_SMP_IDLE_THREAD
help help
The ARM series is a line of low-power-consumption RISC chip designs The ARM series is a line of low-power-consumption RISC chip designs
licensed by ARM Ltd and targeted at embedded applications and licensed by ARM Ltd and targeted at embedded applications and
......
...@@ -16,7 +16,6 @@ ...@@ -16,7 +16,6 @@
struct cpuinfo_arm { struct cpuinfo_arm {
struct cpu cpu; struct cpu cpu;
#ifdef CONFIG_SMP #ifdef CONFIG_SMP
struct task_struct *idle;
unsigned int loops_per_jiffy; unsigned int loops_per_jiffy;
#endif #endif
}; };
......
...@@ -60,31 +60,10 @@ enum ipi_msg_type { ...@@ -60,31 +60,10 @@ enum ipi_msg_type {
static DECLARE_COMPLETION(cpu_running); static DECLARE_COMPLETION(cpu_running);
int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *tidle) int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *idle)
{ {
struct cpuinfo_arm *ci = &per_cpu(cpu_data, cpu);
struct task_struct *idle = ci->idle;
int ret; int ret;
/*
* Spawn a new process manually, if not already done.
* Grab a pointer to its task struct so we can mess with it
*/
if (!idle) {
idle = fork_idle(cpu);
if (IS_ERR(idle)) {
printk(KERN_ERR "CPU%u: fork() failed\n", cpu);
return PTR_ERR(idle);
}
ci->idle = idle;
} else {
/*
* Since this idle thread is being re-used, call
* init_idle() to reinitialize the thread structure.
*/
init_idle(idle, cpu);
}
/* /*
* We need to tell the secondary core where to find * We need to tell the secondary core where to find
* its stack and the page tables. * its stack and the page tables.
...@@ -318,9 +297,6 @@ void __init smp_cpus_done(unsigned int max_cpus) ...@@ -318,9 +297,6 @@ void __init smp_cpus_done(unsigned int max_cpus)
void __init smp_prepare_boot_cpu(void) void __init smp_prepare_boot_cpu(void)
{ {
unsigned int cpu = smp_processor_id();
per_cpu(cpu_data, cpu).idle = current;
} }
void __init smp_prepare_cpus(unsigned int max_cpus) void __init smp_prepare_cpus(unsigned int max_cpus)
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册