diff options
author | Ingo Molnar <mingo@elte.hu> | 2009-07-01 09:56:10 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-07-01 09:56:26 +0200 |
commit | 087021ba41e9481202103d51d3dd0c4706899a2b (patch) | |
tree | bf5d67420fd176682a1f8f1e9342ad397c23937a /arch/mips/kernel/smp.c | |
parent | fb9c818873a788c5c01c9868cc6050df96e2c7df (diff) | |
parent | e83c2b0ff325f52dda1aff3572d0e1516216c54b (diff) |
Merge branch 'linus' into perfcounters/urgent
Merge reason: this branch was on a .30-ish base before, update
it to an almost-.31-rc2 upstream base to pick up fixes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/mips/kernel/smp.c')
-rw-r--r-- | arch/mips/kernel/smp.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c index c937506a03a..bc7d9b05e2f 100644 --- a/arch/mips/kernel/smp.c +++ b/arch/mips/kernel/smp.c @@ -22,6 +22,7 @@ #include <linux/delay.h> #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/smp.h> #include <linux/spinlock.h> #include <linux/threads.h> #include <linux/module.h> @@ -44,7 +45,7 @@ #include <asm/mipsmtregs.h> #endif /* CONFIG_MIPS_MT_SMTC */ -static volatile cpumask_t cpu_callin_map; /* Bitmask of started secondaries */ +volatile cpumask_t cpu_callin_map; /* Bitmask of started secondaries */ int __cpu_number_map[NR_CPUS]; /* Map physical to logical */ int __cpu_logical_map[NR_CPUS]; /* Map logical to physical */ @@ -200,6 +201,8 @@ void __devinit smp_prepare_boot_cpu(void) * and keep control until "cpu_online(cpu)" is set. Note: cpu is * physical, not logical. */ +static struct task_struct *cpu_idle_thread[NR_CPUS]; + int __cpuinit __cpu_up(unsigned int cpu) { struct task_struct *idle; @@ -209,9 +212,16 @@ int __cpuinit __cpu_up(unsigned int cpu) * The following code is purely to make sure * Linux can schedule processes on this slave. */ - idle = fork_idle(cpu); - if (IS_ERR(idle)) - panic(KERN_ERR "Fork failed for CPU %d", cpu); + if (!cpu_idle_thread[cpu]) { + idle = fork_idle(cpu); + cpu_idle_thread[cpu] = idle; + + if (IS_ERR(idle)) + panic(KERN_ERR "Fork failed for CPU %d", cpu); + } else { + idle = cpu_idle_thread[cpu]; + init_idle(idle, cpu); + } mp_ops->boot_secondary(cpu, idle); |