x86, bts: add fork and exit handling

[linux-2.6-omap-h63xx.git] / arch / x86 / kernel / process_32.c

diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
index 605eff9a8ac0b81ee6d503d57da184a3730bec98..3ba155d24884dd812790ff0e5aef8bb6767100d0 100644 (file)
--- a/arch/x86/kernel/process_32.c
+++ b/arch/x86/kernel/process_32.c
@@ -60,6 +60,7 @@
 #include <asm/idle.h>
 #include <asm/syscalls.h>
 #include <asm/smp.h>
+#include <asm/ds.h>
 
 asmlinkage void ret_from_fork(void) __asm__("ret_from_fork");
 
@@ -251,17 +252,8 @@ void exit_thread(void)
                tss->x86_tss.io_bitmap_base = INVALID_IO_BITMAP_OFFSET;
                put_cpu();
        }
-#ifdef CONFIG_X86_DS
-       /* Free any BTS tracers that have not been properly released. */
-       if (unlikely(current->bts)) {
-               ds_release_bts(current->bts);
-               current->bts = NULL;
-
-               kfree(current->bts_buffer);
-               current->bts_buffer = NULL;
-               current->bts_size = 0;
-       }
-#endif /* CONFIG_X86_DS */
+
+       ds_exit_thread(current);
 }
 
 void flush_thread(void)
@@ -343,6 +335,12 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long sp,
                kfree(p->thread.io_bitmap_ptr);
                p->thread.io_bitmap_max = 0;
        }
+
+       ds_copy_thread(p, current);
+
+       clear_tsk_thread_flag(p, TIF_DEBUGCTLMSR);
+       p->thread.debugctlmsr = 0;
+
        return err;
 }