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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-04-15 12:55:07 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-05-20 08:58:47 +0200 |
| commit | d3a73acbc26a4a81a01a35fd162973e53d0386f5 (patch) | |
| tree | 5b8fd3880f3b38575b1a043f3f4f07623a633bd1 /arch/s390/include/asm/syscall.h | |
| parent | s390/uaccess: simplify control register updates (diff) | |
| download | linux-d3a73acbc26a4a81a01a35fd162973e53d0386f5.tar.xz linux-d3a73acbc26a4a81a01a35fd162973e53d0386f5.zip | |
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.h | 2 |
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; } |