commit ecd3d4bc06e48357d12e730482577c756a9f2dbc
author Kyle McMartin <kyle@mcmartin.ca> Sun Sep 27 23:03:02 2009 -0400
committer Kyle McMartin <kyle@ihatethathostname.lab.bos.redhat.com> Sun Sep 27 23:07:22 2009 -0400
tree 36f683170f874157103cc962f4a3d3d85771e480
parent 2798af1abb5d560b926fd07ec58c5dcc6d3484d8

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>

arch/parisc/kernel/ptrace.c

diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c
index 08f6d2c..c4f49e4 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_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_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 @@
 
 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);