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authorMarkus Metzger <markus.t.metzger@intel.com>2009-04-03 10:43:46 -0400
committerIngo Molnar <mingo@elte.hu>2009-04-07 07:36:28 -0400
commit2311f0de21c17b2a8b960677a9cccfbfa52beb35 (patch)
treebd1f12da337e4f88675f43e71fe6e06016fbc76c /arch/x86/kernel/process.c
parent3a68eef945b234f286406d96dc690fe17863c203 (diff)
x86, ds: add leakage warning
Add a warning in case a debug store context is not removed before the task it is attached to is freed. Remove the old warning at thread exit. It is too early. Declare the debug store context field in thread_struct unconditionally. Remove ds_copy_thread() and ds_exit_thread() and do the work directly in process*.c. Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> Cc: roland@redhat.com Cc: eranian@googlemail.com Cc: oleg@redhat.com Cc: juan.villacis@intel.com Cc: ak@linux.jf.intel.com LKML-Reference: <20090403144601.254472000@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/process.c')
-rw-r--r--arch/x86/kernel/process.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index ca989158e847..fb5dfb891f0f 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -14,6 +14,7 @@
14#include <asm/idle.h> 14#include <asm/idle.h>
15#include <asm/uaccess.h> 15#include <asm/uaccess.h>
16#include <asm/i387.h> 16#include <asm/i387.h>
17#include <asm/ds.h>
17 18
18unsigned long idle_halt; 19unsigned long idle_halt;
19EXPORT_SYMBOL(idle_halt); 20EXPORT_SYMBOL(idle_halt);
@@ -45,6 +46,8 @@ void free_thread_xstate(struct task_struct *tsk)
45 kmem_cache_free(task_xstate_cachep, tsk->thread.xstate); 46 kmem_cache_free(task_xstate_cachep, tsk->thread.xstate);
46 tsk->thread.xstate = NULL; 47 tsk->thread.xstate = NULL;
47 } 48 }
49
50 WARN(tsk->thread.ds_ctx, "leaking DS context\n");
48} 51}
49 52
50void free_thread_info(struct thread_info *ti) 53void free_thread_info(struct thread_info *ti)
@@ -83,8 +86,6 @@ void exit_thread(void)
83 put_cpu(); 86 put_cpu();
84 kfree(bp); 87 kfree(bp);
85 } 88 }
86
87 ds_exit_thread(current);
88} 89}
89 90
90void flush_thread(void) 91void flush_thread(void)