X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-um%2Fthread_info.h;h=356b83e2c22edf07c357e91c46469ad762968fb2;hb=6e2401ad6f33de15ff00f78b88159f00a14f3b35;hp=261e2f4528f6a62e1f5dd94c41ff06d5405beeed;hpb=fffcb480e4224f25c965b93fa65541bfc7dd732e;p=linux-2.6-omap-h63xx.git

diff --git a/include/asm-um/thread_info.h b/include/asm-um/thread_info.h
index 261e2f4528f..356b83e2c22 100644
--- a/include/asm-um/thread_info.h
+++ b/include/asm-um/thread_info.h
@@ -1,5 +1,5 @@
-/* 
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+/*
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
  * Licensed under the GPL
  */
 
@@ -8,8 +8,9 @@
 
 #ifndef __ASSEMBLY__
 
-#include <asm/processor.h>
 #include <asm/types.h>
+#include <asm/page.h>
+#include <asm/uaccess.h>
 
 struct thread_info {
 	struct task_struct	*task;		/* main task structure */
@@ -22,6 +23,7 @@ struct thread_info {
 					 	   0-0xBFFFFFFF for user
 						   0-0xFFFFFFFF for kernel */
 	struct restart_block    restart_block;
+	struct thread_info	*real_thread;    /* Points to non-IRQ stack */
 };
 
 #define INIT_THREAD_INFO(tsk)			\
@@ -35,6 +37,7 @@ struct thread_info {
 	.restart_block =  {			\
 		.fn =  do_no_restart_syscall,	\
 	},					\
+	.real_thread = NULL,			\
 }
 
 #define init_thread_info	(init_thread_union.thread_info)
@@ -50,10 +53,21 @@ static inline struct thread_info *current_thread_info(void)
 	return ti;
 }
 
+#ifdef CONFIG_DEBUG_STACK_USAGE
+
+#define alloc_thread_info(tsk) \
+	((struct thread_info *) __get_free_pages(GFP_KERNEL | __GFP_ZERO, \
+						 CONFIG_KERNEL_STACK_ORDER))
+#else
+
 /* thread information allocation */
 #define alloc_thread_info(tsk) \
-	((struct thread_info *) kmalloc(THREAD_SIZE, GFP_KERNEL))
-#define free_thread_info(ti) kfree(ti)
+	((struct thread_info *) __get_free_pages(GFP_KERNEL, \
+						 CONFIG_KERNEL_STACK_ORDER))
+#endif
+
+#define free_thread_info(ti) \
+	free_pages((unsigned long)(ti),CONFIG_KERNEL_STACK_ORDER)
 
 #endif
 
@@ -62,8 +76,8 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_SYSCALL_TRACE	0	/* syscall trace active */
 #define TIF_SIGPENDING		1	/* signal pending */
 #define TIF_NEED_RESCHED	2	/* rescheduling necessary */
-#define TIF_POLLING_NRFLAG      3       /* true if poll_idle() is polling 
-					 * TIF_NEED_RESCHED 
+#define TIF_POLLING_NRFLAG      3       /* true if poll_idle() is polling
+					 * TIF_NEED_RESCHED
 					 */
 #define TIF_RESTART_BLOCK 	4
 #define TIF_MEMDIE	 	5