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MN10300: Save frame pointer in thread_info struct rather than global var

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Save the current exception frame pointer in the thread_info struct rather than
in a global variable as the latter makes SMP tricky, especially when preemption
is also enabled.

This also replaces __frame with current_frame() and rearranges header file
inclusions to make it all compile.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com>
This commit is contained in:
David Howells
2010-10-27 17:29:01 +01:00
parent a5e03ca2fd
commit 7c7fcf762e
15 changed files with 76 additions and 146 deletions
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4
arch/mn10300/include/asm/uaccess.h
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@@ -14,9 +14,8 @@
/*
* User space memory access functions
*/
#include <linux/sched.h>
#include <linux/thread_info.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/errno.h>
#define VERIFY_READ 0
@@ -29,7 +28,6 @@
*
* For historical reasons, these macros are grossly misnamed.
*/
#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
#define KERNEL_XDS MAKE_MM_SEG(0xBFFFFFFF)