x86/fpu, sched: Dynamically allocate 'struct fpu'

[karo-tx-linux.git] / include / linux / sched.h

diff --git a/include/linux/sched.h b/include/linux/sched.h
index ae21f1591615e06cec2115563c3f821fe36c868e..e43a41d892b60f04368fcca75ffe8a0d4d9067a1 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1522,8 +1522,6 @@ struct task_struct {
 /* hung task detection */
        unsigned long last_switch_count;
 #endif
-/* CPU-specific state of this task */
-       struct thread_struct thread;
 /* filesystem information */
        struct fs_struct *fs;
 /* open file information */
@@ -1778,8 +1776,18 @@ struct task_struct {
        unsigned long   task_state_change;
 #endif
        int pagefault_disabled;
+/* CPU-specific state of this task */
+       struct thread_struct thread;
+/*
+ * WARNING: on x86, 'thread_struct' contains a variable-sized
+ * structure.  It *MUST* be at the end of 'task_struct'.
+ *
+ * Do not put anything below here!
+ */
 };
 
+extern int arch_task_struct_size(void);
+
 /* Future-safe accessor for struct task_struct's cpus_allowed. */
 #define tsk_cpus_allowed(tsk) (&(tsk)->cpus_allowed)