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authorKyle McMartin <kyle@mcmartin.ca>2009-09-27 23:03:02 -0400
committerKyle McMartin <kyle@ihatethathostname.lab.bos.redhat.com>2009-09-27 23:07:22 -0400
commitecd3d4bc06e48357d12e730482577c756a9f2dbc (patch)
tree36f683170f874157103cc962f4a3d3d85771e480 /arch/parisc/kernel/ptrace.c
parent2798af1abb5d560b926fd07ec58c5dcc6d3484d8 (diff)
parisc: stop using task->ptrace for {single,block}step flags
task->ptrace flags belong to generic code, so instead thief some TIF_ bits to use. Somewhat risky conversion of code to test TASK_FLAGS instead of TASK_PTRACE in assembly, but it looks alright in the end. Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
Diffstat (limited to 'arch/parisc/kernel/ptrace.c')
-rw-r--r--arch/parisc/kernel/ptrace.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c
index 08f6d2cbf0e..c4f49e45129 100644
--- a/arch/parisc/kernel/ptrace.c
+++ b/arch/parisc/kernel/ptrace.c
@@ -36,7 +36,8 @@
*/
void ptrace_disable(struct task_struct *task)
{
- task->ptrace &= ~(PT_SINGLESTEP|PT_BLOCKSTEP);
+ clear_tsk_thread_flag(task, TIF_SINGLESTEP);
+ clear_tsk_thread_flag(task, TIF_BLOCKSTEP);
/* make sure the trap bits are not set */
pa_psw(task)->r = 0;
@@ -56,8 +57,8 @@ void user_disable_single_step(struct task_struct *task)
void user_enable_single_step(struct task_struct *task)
{
- task->ptrace &= ~PT_BLOCKSTEP;
- task->ptrace |= PT_SINGLESTEP;
+ clear_tsk_thread_flag(task, TIF_BLOCKSTEP);
+ set_tsk_thread_flag(task, TIF_SINGLESTEP);
if (pa_psw(task)->n) {
struct siginfo si;
@@ -99,8 +100,8 @@ void user_enable_single_step(struct task_struct *task)
void user_enable_block_step(struct task_struct *task)
{
- task->ptrace &= ~PT_SINGLESTEP;
- task->ptrace |= PT_BLOCKSTEP;
+ clear_tsk_thread_flag(task, TIF_SINGLESTEP);
+ set_tsk_thread_flag(task, TIF_BLOCKSTEP);
/* Enable taken branch trap. */
pa_psw(task)->r = 0;
@@ -275,7 +276,8 @@ long do_syscall_trace_enter(struct pt_regs *regs)
void do_syscall_trace_exit(struct pt_regs *regs)
{
- int stepping = !!(current->ptrace & (PT_SINGLESTEP|PT_BLOCKSTEP));
+ int stepping = test_thread_flag(TIF_SINGLESTEP) ||
+ test_thread_flag(TIF_BLOCKSTEP);
if (stepping || test_thread_flag(TIF_SYSCALL_TRACE))
tracehook_report_syscall_exit(regs, stepping);