smp.c (b2aaf8f74cdc84a9182f6cabf198b7763bcb9d40) smp.c (98a79d6a50181ca1ecf7400eda01d5dc1bc0dbf0)
1/*
2** SMP Support
3**
4** Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
5** Copyright (C) 1999 David Mosberger-Tang <davidm@hpl.hp.com>
6** Copyright (C) 2001,2004 Grant Grundler <grundler@parisc-linux.org>
7**
8** Lots of stuff stolen from arch/alpha/kernel/smp.c

--- 53 unchanged lines hidden (view full) ---

62DEFINE_SPINLOCK(smp_lock);
63
64volatile struct task_struct *smp_init_current_idle_task;
65
66static volatile int cpu_now_booting __read_mostly = 0; /* track which CPU is booting */
67
68static int parisc_max_cpus __read_mostly = 1;
69
1/*
2** SMP Support
3**
4** Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
5** Copyright (C) 1999 David Mosberger-Tang <davidm@hpl.hp.com>
6** Copyright (C) 2001,2004 Grant Grundler <grundler@parisc-linux.org>
7**
8** Lots of stuff stolen from arch/alpha/kernel/smp.c

--- 53 unchanged lines hidden (view full) ---

62DEFINE_SPINLOCK(smp_lock);
63
64volatile struct task_struct *smp_init_current_idle_task;
65
66static volatile int cpu_now_booting __read_mostly = 0; /* track which CPU is booting */
67
68static int parisc_max_cpus __read_mostly = 1;
69
70/* online cpus are ones that we've managed to bring up completely
71 * possible cpus are all valid cpu
72 * present cpus are all detected cpu
73 *
74 * On startup we bring up the "possible" cpus. Since we discover
75 * CPUs later, we add them as hotplug, so the possible cpu mask is
76 * empty in the beginning.
77 */
78
79cpumask_t cpu_online_map __read_mostly = CPU_MASK_NONE; /* Bitmap of online CPUs */
80cpumask_t cpu_possible_map __read_mostly = CPU_MASK_ALL; /* Bitmap of Present CPUs */
81
82EXPORT_SYMBOL(cpu_online_map);
83EXPORT_SYMBOL(cpu_possible_map);
84
85DEFINE_PER_CPU(spinlock_t, ipi_lock) = SPIN_LOCK_UNLOCKED;
86
87enum ipi_message_type {
88 IPI_NOP=0,
89 IPI_RESCHEDULE=1,
90 IPI_CALL_FUNC,
91 IPI_CALL_FUNC_SINGLE,
92 IPI_CPU_START,

--- 393 unchanged lines hidden --- 		70DEFINE_PER_CPU(spinlock_t, ipi_lock) = SPIN_LOCK_UNLOCKED;
71
72enum ipi_message_type {
73 IPI_NOP=0,
74 IPI_RESCHEDULE=1,
75 IPI_CALL_FUNC,
76 IPI_CALL_FUNC_SINGLE,
77 IPI_CPU_START,

--- 393 unchanged lines hidden ---