diff options
| 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/kernel/ptrace.c | |
| parent | beef560b4cdfafb2211a856e1d722540f5151933 (diff) | |
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/kernel/ptrace.c')
| -rw-r--r-- | arch/s390/kernel/ptrace.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c index 1c82619eb4f7..2d716734b5b1 100644 --- a/arch/s390/kernel/ptrace.c +++ b/arch/s390/kernel/ptrace.c @@ -136,7 +136,7 @@ void ptrace_disable(struct task_struct *task) memset(&task->thread.per_user, 0, sizeof(task->thread.per_user)); memset(&task->thread.per_event, 0, sizeof(task->thread.per_event)); clear_tsk_thread_flag(task, TIF_SINGLE_STEP); - clear_tsk_thread_flag(task, TIF_PER_TRAP); + clear_pt_regs_flag(task_pt_regs(task), PIF_PER_TRAP); task->thread.per_flags = 0; } @@ -813,7 +813,7 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs) * debugger stored an invalid system call number. Skip * the system call and the system call restart handling. */ - clear_thread_flag(TIF_SYSCALL); + clear_pt_regs_flag(regs, PIF_SYSCALL); ret = -1; } |