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authorHeiko Carstens <heiko.carstens@de.ibm.com>2011-01-12 09:55:29 +0100
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2011-01-12 09:55:25 +0100
commita05c90f1948baacedd0c3e7e3250225be4cae727 (patch)
tree4c3f2e2b692c1b4915b8bef40ad591dfc3e7edcc /arch/s390/include
parent9887a1fcddef1386d3387edf6497d08670460edb (diff)
downloadlinux-linaro-android-a05c90f1948baacedd0c3e7e3250225be4cae727.tar.gz
[S390] Add is_32bit_task() helper function
Helper function which tells us if a task is running in ESA mode. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include')
-rw-r--r--arch/s390/include/asm/compat.h2
-rw-r--r--arch/s390/include/asm/thread_info.h6
2 files changed, 7 insertions, 1 deletions
diff --git a/arch/s390/include/asm/compat.h b/arch/s390/include/asm/compat.h
index a875c2f542e..da359ca6fe5 100644
--- a/arch/s390/include/asm/compat.h
+++ b/arch/s390/include/asm/compat.h
@@ -169,7 +169,7 @@ static inline compat_uptr_t ptr_to_compat(void __user *uptr)
static inline int is_compat_task(void)
{
- return test_thread_flag(TIF_31BIT);
+ return is_32bit_task();
}
#else
diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h
index ebc77091466..ad1382f7932 100644
--- a/arch/s390/include/asm/thread_info.h
+++ b/arch/s390/include/asm/thread_info.h
@@ -118,6 +118,12 @@ static inline struct thread_info *current_thread_info(void)
#define _TIF_SINGLE_STEP (1<<TIF_FREEZE)
#define _TIF_FREEZE (1<<TIF_FREEZE)
+#ifdef CONFIG_64BIT
+#define is_32bit_task() (test_thread_flag(TIF_31BIT))
+#else
+#define is_32bit_task() (1)
+#endif
+
#endif /* __KERNEL__ */
#define PREEMPT_ACTIVE 0x4000000