Commit cce4517f authored May 03, 2012 by Thomas Gleixner

frv: Use correct size for task_struct allocation



alloc_task_struct_node() allocates THREAD_SIZE and maintains some
weird refcount in the allocated memory. This never blew up as
task_struct size on 32bit machines was always less than THREAD_SIZE

Allocate just sizeof(struct task_struct) and get rid of the magic
refcounting.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David Howells <dhowells@redhat.com>
Link: http://lkml.kernel.org/r/20120503085033.898475542@linutronix.de

parent 43a18b1e

arch/frv/kernel/process.c

+2 −7

Original line number	Diff line number	Diff line
		@@ -45,16 +45,11 @@ EXPORT_SYMBOL(pm_power_off);

		struct task_struct *alloc_task_struct_node(int node)
		{
		struct task_struct *p = kmalloc_node(THREAD_SIZE, GFP_KERNEL, node);

		if (p)
		atomic_set((atomic_t *)(p+1), 1);
		return p;
		return kmalloc_node(sizeof(task_struct), GFP_KERNEL, node);
		}

		void free_task_struct(struct task_struct *p)
		{
		if (atomic_dec_and_test((atomic_t *)(p+1)))
		kfree(p);
		}