tile: support CONTEXT_TRACKING and thus NOHZ_FULL

[karo-tx-linux.git] / arch / tile / kernel / process.c

diff --git a/arch/tile/kernel/process.c b/arch/tile/kernel/process.c
index 48e5773dd0b7728fdcb2d3500580f4c1b11e1ab6..b403c2e3e26344b7468a9d775c177bbcfd702118 100644 (file)
--- a/arch/tile/kernel/process.c
+++ b/arch/tile/kernel/process.c
@@ -27,6 +27,7 @@
 #include <linux/kernel.h>
 #include <linux/tracehook.h>
 #include <linux/signal.h>
+#include <linux/context_tracking.h>
 #include <asm/stack.h>
 #include <asm/switch_to.h>
 #include <asm/homecache.h>
@@ -474,6 +475,8 @@ int do_work_pending(struct pt_regs *regs, u32 thread_info_flags)
        if (!user_mode(regs))
                return 0;
 
+       user_exit();
+
        /* Enable interrupts; they are disabled again on return to caller. */
        local_irq_enable();
 
@@ -496,11 +499,12 @@ int do_work_pending(struct pt_regs *regs, u32 thread_info_flags)
                tracehook_notify_resume(regs);
                return 1;
        }
-       if (thread_info_flags & _TIF_SINGLESTEP) {
+       if (thread_info_flags & _TIF_SINGLESTEP)
                single_step_once(regs);
-               return 0;
-       }
-       panic("work_pending: bad flags %#x\n", thread_info_flags);
+
+       user_enter();
+
+       return 0;
 }
 
 unsigned long get_wchan(struct task_struct *p)