arch/tile: move user_exit() to early kernel entry sequence

[cascardo/linux.git] / arch / tile / kernel / ptrace.c

diff --git a/arch/tile/kernel/ptrace.c b/arch/tile/kernel/ptrace.c
index bdc126f..54e7b72 100644 (file)
--- a/arch/tile/kernel/ptrace.c
+++ b/arch/tile/kernel/ptrace.c
@@ -255,13 +255,6 @@ int do_syscall_trace_enter(struct pt_regs *regs)
 {
        u32 work = ACCESS_ONCE(current_thread_info()->flags);
 
-       /*
-        * If TIF_NOHZ is set, we are required to call user_exit() before
-        * doing anything that could touch RCU.
-        */
-       if (work & _TIF_NOHZ)
-               user_exit();
-
        if (secure_computing() == -1)
                return -1;
 
@@ -280,12 +273,6 @@ void do_syscall_trace_exit(struct pt_regs *regs)
 {
        long errno;
 
-       /*
-        * We may come here right after calling schedule_user()
-        * in which case we can be in RCU user mode.
-        */
-       user_exit();
-
        /*
         * The standard tile calling convention returns the value (or negative
         * errno) in r0, and zero (or positive errno) in r1.
@@ -322,7 +309,5 @@ void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs)
 /* Handle synthetic interrupt delivered only by the simulator. */
 void __kprobes do_breakpoint(struct pt_regs* regs, int fault_num)
 {
-       enum ctx_state prev_state = exception_enter();
        send_sigtrap(current, regs);
-       exception_exit(prev_state);
 }