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Commit 24b0d22b authored by travis@sgi.com's avatar travis@sgi.com Committed by Ingo Molnar
Browse files

x86: change NR_CPUS arrays in smpboot_64 



Change the following static arrays sized by NR_CPUS to
per_cpu data variables:

	task_struct *idle_thread_array[NR_CPUS];

This is only done if CONFIG_HOTPLUG_CPU is defined
as otherwise, the array is removed after initialization
anyways.

Signed-off-by: default avatarMike Travis <travis@sgi.com>
Reviewed-by: default avatarChristoph Lameter <clameter@sgi.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 2c6b8c03

arch/x86/kernel/smpboot_64.c

+11 −1
Original line number Diff line number Diff line
@@ -111,10 +111,20 @@ DEFINE_PER_CPU(int, cpu_state) = { 0 }; 
 * a new thread. Also avoids complicated thread destroy functionality

 * for idle threads.

 */

#ifdef CONFIG_HOTPLUG_CPU

/*

 * Needed only for CONFIG_HOTPLUG_CPU because __cpuinitdata is

 * removed after init for !CONFIG_HOTPLUG_CPU.

 */

static DEFINE_PER_CPU(struct task_struct *, idle_thread_array);

#define get_idle_for_cpu(x)     (per_cpu(idle_thread_array, x))

#define set_idle_for_cpu(x,p)   (per_cpu(idle_thread_array, x) = (p))

#else

struct task_struct *idle_thread_array[NR_CPUS] __cpuinitdata ;



#define get_idle_for_cpu(x)     (idle_thread_array[(x)])

#define set_idle_for_cpu(x,p)   (idle_thread_array[(x)] = (p))

#endif





/*

 * Currently trivial. Write the real->protected mode