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authorThomas Gleixner <tglx@linutronix.de>2012-05-03 09:02:47 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-08-20 08:26:28 -0700
commit0a2436eff9888b8fff8b7a5cf6bae49826615a7e (patch)
treee6001f3b0b82738e54aaf7c1f89a128465bcb730
parenta42efb79d54d9a13c8f68df122c832bca08b74ae (diff)
downloadlinux-linaro-stable-0a2436eff9888b8fff8b7a5cf6bae49826615a7e.tar.gz
frv: Use correct size for task_struct allocation
commit cce4517f33384c3794c759e206cc8e1bb6df146b upstream. 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 Cc: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--arch/frv/kernel/process.c9
1 files changed, 2 insertions, 7 deletions
diff --git a/arch/frv/kernel/process.c b/arch/frv/kernel/process.c
index 3941cbc91ff6..40630b782b73 100644
--- a/arch/frv/kernel/process.c
+++ b/arch/frv/kernel/process.c
@@ -46,17 +46,12 @@ 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);
+ kfree(p);
}
static void core_sleep_idle(void)