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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2014-04-15 12:55:07 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2014-05-20 08:58:47 +0200
commitd3a73acbc26a4a81a01a35fd162973e53d0386f5 (patch)
tree5b8fd3880f3b38575b1a043f3f4f07623a633bd1 /arch/s390/include/asm/syscall.h
parentbeef560b4cdfafb2211a856e1d722540f5151933 (diff)
downloadlinux-sh-d3a73acbc26a4a81a01a35fd162973e53d0386f5.tar.gz
s390: split TIF bits into CIF, PIF and TIF bits
The oi and ni instructions used in entry[64].S to set and clear bits in the thread-flags are not guaranteed to be atomic in regard to other CPUs. Split the TIF bits into CPU, pt_regs and thread-info specific bits. Updates on the TIF bits are done with atomic instructions, updates on CPU and pt_regs bits are done with non-atomic instructions. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/syscall.h')
-rw-r--r--arch/s390/include/asm/syscall.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/include/asm/syscall.h b/arch/s390/include/asm/syscall.h
index 777687055e7b..abad78d5b10c 100644
--- a/arch/s390/include/asm/syscall.h
+++ b/arch/s390/include/asm/syscall.h
@@ -28,7 +28,7 @@ extern const unsigned int sys_call_table_emu[];
static inline long syscall_get_nr(struct task_struct *task,
struct pt_regs *regs)
{
- return test_tsk_thread_flag(task, TIF_SYSCALL) ?
+ return test_pt_regs_flag(regs, PIF_SYSCALL) ?
(regs->int_code & 0xffff) : -1;
}