[tip:x86/cleanups] x86, mm, trivial: Remove unnecessary get_order() in free_thread_info()

[tip-bot for Zhao Jin <cronozhj@gmail.com>]

Commit-ID:  c812d8f7ad27bd5f1ed1c790eea8527b6f8ff1c7
Gitweb:     http://git.kernel.org/tip/c812d8f7ad27bd5f1ed1c790eea8527b6f8ff1c7
Author:     Zhao Jin <cronozhj@gmail.com>
AuthorDate: Sat, 20 Aug 2011 21:24:57 +0800
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Tue, 23 Aug 2011 21:49:35 +0200

x86, mm, trivial: Remove unnecessary get_order() in free_thread_info()

Because THREAD_SIZE is defined as PAGE_SIZE << THREAD_ORDER on x86, the
call of get_order(THREAD_SIZE) can be replaced with THREAD_ORDER.

Signed-off-by: Zhao Jin <cronozhj@gmail.com>
Link: http://lkml.kernel.org/r/4E4FB5A9.700@gmail.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/x86/kernel/process.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index e7e3b01..b9b3b1a 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -49,7 +49,7 @@ void free_thread_xstate(struct task_struct *tsk)
 void free_thread_info(struct thread_info *ti)
 {
 	free_thread_xstate(ti->task);
-	free_pages((unsigned long)ti, get_order(THREAD_SIZE));
+	free_pages((unsigned long)ti, THREAD_ORDER);
 }
 
 void arch_task_cache_init(void)