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| author | Thomas Gleixner <tglx@linutronix.de> | 2012-04-20 13:05:51 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2012-04-26 12:06:11 +0200 |
| commit | 360014a36170464ebd9935514f0e0e3d558b0e56 (patch) | |
| tree | c69cd8139075bfba446271c28cb576f1c81c98fa /arch/mips | |
| parent | 84ec6d5796e095e2f8698bd2b5d33849ed26d9e2 (diff) | |
| download | linux-360014a36170464ebd9935514f0e0e3d558b0e56.tar.gz linux-360014a36170464ebd9935514f0e0e3d558b0e56.tar.bz2 linux-360014a36170464ebd9935514f0e0e3d558b0e56.zip | |
mips: Use generic idle thread allocation
Signed-off-by: Thomas 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: Ralf Baechle <ralf@linux-mips.org>
Link: http://lkml.kernel.org/r/20120420124557.512158271@linutronix.de
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/Kconfig | 1 | ||||
| -rw-r--r-- | arch/mips/kernel/smp.c | 54 |
2 files changed, 2 insertions, 53 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index ce30e2f91d77..186fc8cf9ee0 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -29,6 +29,7 @@ config MIPS select HAVE_MEMBLOCK select HAVE_MEMBLOCK_NODE_MAP select ARCH_DISCARD_MEMBLOCK + select GENERIC_SMP_IDLE_THREAD menu "Machine selection" diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c index 41079b256092..71a95f55a649 100644 --- a/arch/mips/kernel/smp.c +++ b/arch/mips/kernel/smp.c @@ -186,61 +186,9 @@ void __devinit smp_prepare_boot_cpu(void) cpu_set(0, cpu_callin_map); } -/* - * Called once for each "cpu_possible(cpu)". Needs to spin up the cpu - * and keep control until "cpu_online(cpu)" is set. Note: cpu is - * physical, not logical. - */ -static struct task_struct *cpu_idle_thread[NR_CPUS]; - -struct create_idle { - struct work_struct work; - struct task_struct *idle; - struct completion done; - int cpu; -}; - -static void __cpuinit do_fork_idle(struct work_struct *work) -{ - struct create_idle *c_idle = - container_of(work, struct create_idle, work); - - c_idle->idle = fork_idle(c_idle->cpu); - complete(&c_idle->done); -} - int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *tidle) { - struct task_struct *idle; - - /* - * Processor goes to start_secondary(), sets online flag - * The following code is purely to make sure - * Linux can schedule processes on this slave. - */ - if (!cpu_idle_thread[cpu]) { - /* - * Schedule work item to avoid forking user task - * Ported from arch/x86/kernel/smpboot.c - */ - struct create_idle c_idle = { - .cpu = cpu, - .done = COMPLETION_INITIALIZER_ONSTACK(c_idle.done), - }; - - INIT_WORK_ONSTACK(&c_idle.work, do_fork_idle); - schedule_work(&c_idle.work); - wait_for_completion(&c_idle.done); - idle = cpu_idle_thread[cpu] = c_idle.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); + mp_ops->boot_secondary(cpu, tidle); /* * Trust is futile. We should really have timeouts ... |