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authorRoland McGrath <roland@redhat.com>2008-01-26 14:11:22 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-01-26 14:11:27 +0100
commit0ac30be461084f30ad6e22c6b91347e880ed41aa (patch)
tree1e157c413e8495ea66700d02d055bfcbe7d4fe71 /arch/s390/kernel/ptrace.c
parentea29ee16e6ea908c830e70516d440828fd9129a8 (diff)
[S390] single-step cleanup
Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/ptrace.c')
-rw-r--r--arch/s390/kernel/ptrace.c15
1 files changed, 6 insertions, 9 deletions
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 1d81bf9488a..6e036bae987 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -86,13 +86,13 @@ FixPerRegisters(struct task_struct *task)
per_info->control_regs.bits.storage_alt_space_ctl = 0;
}
-static void set_single_step(struct task_struct *task)
+void user_enable_single_step(struct task_struct *task)
{
task->thread.per_info.single_step = 1;
FixPerRegisters(task);
}
-static void clear_single_step(struct task_struct *task)
+void user_disable_single_step(struct task_struct *task)
{
task->thread.per_info.single_step = 0;
FixPerRegisters(task);
@@ -107,7 +107,7 @@ void
ptrace_disable(struct task_struct *child)
{
/* make sure the single step bit is not set. */
- clear_single_step(child);
+ user_disable_single_step(child);
}
#ifndef CONFIG_64BIT
@@ -651,7 +651,7 @@ do_ptrace(struct task_struct *child, long request, long addr, long data)
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
child->exit_code = data;
/* make sure the single step bit is not set. */
- clear_single_step(child);
+ user_disable_single_step(child);
wake_up_process(child);
return 0;
@@ -665,7 +665,7 @@ do_ptrace(struct task_struct *child, long request, long addr, long data)
return 0;
child->exit_code = SIGKILL;
/* make sure the single step bit is not set. */
- clear_single_step(child);
+ user_disable_single_step(child);
wake_up_process(child);
return 0;
@@ -675,10 +675,7 @@ do_ptrace(struct task_struct *child, long request, long addr, long data)
return -EIO;
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
child->exit_code = data;
- if (data)
- set_tsk_thread_flag(child, TIF_SINGLE_STEP);
- else
- set_single_step(child);
+ user_enable_single_step(child);
/* give it a chance to run. */
wake_up_process(child);
return 0;