Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

[linux-drm-fsl-dcu.git] / arch / m68k / kernel / ptrace.c

diff --git a/arch/m68k/kernel/ptrace.c b/arch/m68k/kernel/ptrace.c
index f7f1d2e5b90bcec403526c14c1f183fc74d3fe4e..7fd2720c38416f422d70d695d8dc73c67ed0a7b5 100644 (file)
--- a/arch/m68k/kernel/ptrace.c
+++ b/arch/m68k/kernel/ptrace.c
@@ -18,7 +18,6 @@
 #include <linux/errno.h>
 #include <linux/ptrace.h>
 #include <linux/user.h>
-#include <linux/config.h>
 #include <linux/signal.h>
 
 #include <asm/uaccess.h>
@@ -77,7 +76,7 @@ static inline long get_reg(struct task_struct *task, int regno)
 
        if (regno == PT_USP)
                addr = &task->thread.usp;
-       else if (regno < sizeof(regoff)/sizeof(regoff[0]))
+       else if (regno < ARRAY_SIZE(regoff))
                addr = (unsigned long *)(task->thread.esp0 + regoff[regno]);
        else
                return 0;
@@ -94,7 +93,7 @@ static inline int put_reg(struct task_struct *task, int regno,
 
        if (regno == PT_USP)
                addr = &task->thread.usp;
-       else if (regno < sizeof(regoff)/sizeof(regoff[0]))
+       else if (regno < ARRAY_SIZE(regoff))
                addr = (unsigned long *)(task->thread.esp0 + regoff[regno]);
        else
                return -1;
@@ -109,7 +108,7 @@ static inline void singlestep_disable(struct task_struct *child)
 {
        unsigned long tmp = get_reg(child, PT_SR) & ~(TRACE_BITS << 16);
        put_reg(child, PT_SR, tmp);
-       child->thread.work.delayed_trace = 0;
+       clear_tsk_thread_flag(child, TIF_DELAYED_TRACE);
 }
 
 /*
@@ -118,51 +117,14 @@ static inline void singlestep_disable(struct task_struct *child)
 void ptrace_disable(struct task_struct *child)
 {
        singlestep_disable(child);
-       child->thread.work.syscall_trace = 0;
+       clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
 }
 
-asmlinkage long sys_ptrace(long request, long pid, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 {
-       struct task_struct *child;
        unsigned long tmp;
        int i, ret = 0;
 
-       lock_kernel();
-       if (request == PTRACE_TRACEME) {
-               /* are we already being traced? */
-               if (current->ptrace & PT_PTRACED) {
-                       ret = -EPERM;
-                       goto out;
-               }
-               /* set the ptrace bit in the process flags. */
-               current->ptrace |= PT_PTRACED;
-               goto out;
-       }
-       read_lock(&tasklist_lock);
-       child = find_task_by_pid(pid);
-       if (child)
-               get_task_struct(child);
-       read_unlock(&tasklist_lock);
-       if (unlikely(!child)) {
-               ret = -ESRCH;
-               goto out;
-       }
-
-       /* you may not mess with init */
-       if (unlikely(pid == 1)) {
-               ret = -EPERM;
-               goto out_tsk;
-       }
-
-       if (request == PTRACE_ATTACH) {
-               ret = ptrace_attach(child);
-               goto out_tsk;
-       }
-
-       ret = ptrace_check_attach(child, request == PTRACE_KILL);
-       if (ret)
-               goto out_tsk;
-
        switch (request) {
        /* when I and D space are separate, these will need to be fixed. */
        case PTRACE_PEEKTEXT:   /* read word at location addr. */
@@ -235,9 +197,9 @@ asmlinkage long sys_ptrace(long request, long pid, long addr, long data)
                        goto out_eio;
 
                if (request == PTRACE_SYSCALL)
-                       child->thread.work.syscall_trace = ~0;
+                       set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
                else
-                       child->thread.work.syscall_trace = 0;
+                       clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
                child->exit_code = data;
                singlestep_disable(child);
                wake_up_process(child);
@@ -260,10 +222,10 @@ asmlinkage long sys_ptrace(long request, long pid, long addr, long data)
                if (!valid_signal(data))
                        goto out_eio;
 
-               child->thread.work.syscall_trace = 0;
+               clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
                tmp = get_reg(child, PT_SR) | (TRACE_BITS << 16);
                put_reg(child, PT_SR, tmp);
-               child->thread.work.delayed_trace = 1;
+               set_tsk_thread_flag(child, TIF_DELAYED_TRACE);
 
                child->exit_code = data;
                /* give it a chance to run. */
@@ -317,21 +279,14 @@ asmlinkage long sys_ptrace(long request, long pid, long addr, long data)
                ret = ptrace_request(child, request, addr, data);
                break;
        }
-out_tsk:
-       put_task_struct(child);
-out:
-       unlock_kernel();
+
        return ret;
 out_eio:
-       ret = -EIO;
-       goto out_tsk;
+       return -EIO;
 }
 
 asmlinkage void syscall_trace(void)
 {
-       if (!current->thread.work.delayed_trace &&
-           !current->thread.work.syscall_trace)
-               return;
        ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
                                 ? 0x80 : 0));
        /*