X-Git-Url: http://git.agner.ch/gitweb/?a=blobdiff_plain;f=arch%2Farm%2Fkernel%2Fptrace.c;h=6f2f46c2e406ee844632da068353b0167735886e;hb=f697b677620d04d8c77841745727de85f7e948b1;hp=a1d1b2906e8d60006090cdd62012c38f41352221;hpb=409761bb6a06bd61e2d8e27a1af534371d9537ed;p=linux-drm-fsl-dcu.git

diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index a1d1b2906e8d..6f2f46c2e406 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -9,12 +9,10 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
-#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/mm.h>
 #include <linux/smp.h>
-#include <linux/smp_lock.h>
 #include <linux/ptrace.h>
 #include <linux/user.h>
 #include <linux/security.h>
@@ -458,13 +456,10 @@ void ptrace_cancel_bpt(struct task_struct *child)
 
 /*
  * Called by kernel/ptrace.c when detaching..
- *
- * Make sure the single step bit is not set.
  */
 void ptrace_disable(struct task_struct *child)
 {
-	child->ptrace &= ~PT_SINGLESTEP;
-	ptrace_cancel_bpt(child);
+	single_step_disable(child);
 }
 
 /*
@@ -634,6 +629,32 @@ static int ptrace_setwmmxregs(struct task_struct *tsk, void __user *ufp)
 
 #endif
 
+#ifdef CONFIG_CRUNCH
+/*
+ * Get the child Crunch state.
+ */
+static int ptrace_getcrunchregs(struct task_struct *tsk, void __user *ufp)
+{
+	struct thread_info *thread = task_thread_info(tsk);
+
+	crunch_task_disable(thread);  /* force it to ram */
+	return copy_to_user(ufp, &thread->crunchstate, CRUNCH_SIZE)
+		? -EFAULT : 0;
+}
+
+/*
+ * Set the child Crunch state.
+ */
+static int ptrace_setcrunchregs(struct task_struct *tsk, void __user *ufp)
+{
+	struct thread_info *thread = task_thread_info(tsk);
+
+	crunch_task_release(thread);  /* force a reload */
+	return copy_from_user(&thread->crunchstate, ufp, CRUNCH_SIZE)
+		? -EFAULT : 0;
+}
+#endif
+
 long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 {
 	unsigned long tmp;
@@ -687,9 +708,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 			else
 				clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
 			child->exit_code = data;
-			/* make sure single-step breakpoint is gone. */
-			child->ptrace &= ~PT_SINGLESTEP;
-			ptrace_cancel_bpt(child);
+			single_step_disable(child);
 			wake_up_process(child);
 			ret = 0;
 			break;
@@ -700,9 +719,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 		 * exit.
 		 */
 		case PTRACE_KILL:
-			/* make sure single-step breakpoint is gone. */
-			child->ptrace &= ~PT_SINGLESTEP;
-			ptrace_cancel_bpt(child);
+			single_step_disable(child);
 			if (child->exit_state != EXIT_ZOMBIE) {
 				child->exit_code = SIGKILL;
 				wake_up_process(child);
@@ -717,7 +734,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 			ret = -EIO;
 			if (!valid_signal(data))
 				break;
-			child->ptrace |= PT_SINGLESTEP;
+			single_step_enable(child);
 			clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
 			child->exit_code = data;
 			/* give it a chance to run. */
@@ -761,10 +778,20 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 			break;
 
 		case PTRACE_SET_SYSCALL:
+			task_thread_info(child)->syscall = data;
 			ret = 0;
-			child->ptrace_message = data;
 			break;
 
+#ifdef CONFIG_CRUNCH
+		case PTRACE_GETCRUNCHREGS:
+			ret = ptrace_getcrunchregs(child, (void __user *)data);
+			break;
+
+		case PTRACE_SETCRUNCHREGS:
+			ret = ptrace_setcrunchregs(child, (void __user *)data);
+			break;
+#endif
+
 		default:
 			ret = ptrace_request(child, request, addr, data);
 			break;
@@ -789,7 +816,7 @@ asmlinkage int syscall_trace(int why, struct pt_regs *regs, int scno)
 	ip = regs->ARM_ip;
 	regs->ARM_ip = why;
 
-	current->ptrace_message = scno;
+	current_thread_info()->syscall = scno;
 
 	/* the 0x80 provides a way for the tracing parent to distinguish
 	   between a syscall stop and SIGTRAP delivery */
@@ -806,5 +833,5 @@ asmlinkage int syscall_trace(int why, struct pt_regs *regs, int scno)
 	}
 	regs->ARM_ip = ip;
 
-	return current->ptrace_message;
+	return current_thread_info()->syscall;
 }