aboutsummaryrefslogtreecommitdiff
path: root/include/linux/sched.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/sched.h')
-rw-r--r--include/linux/sched.h10
1 files changed, 8 insertions, 2 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 36a10781c3f..d27be933742 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -368,6 +368,11 @@ struct signal_struct {
#endif
};
+/* Context switch must be unlocked if interrupts are to be enabled */
+#ifdef __ARCH_WANT_INTERRUPTS_ON_CTXSW
+# define __ARCH_WANT_UNLOCKED_CTXSW
+#endif
+
/*
* Bits in flags field of signal_struct.
*/
@@ -594,6 +599,9 @@ struct task_struct {
int lock_depth; /* BKL lock depth */
+#if defined(CONFIG_SMP) && defined(__ARCH_WANT_UNLOCKED_CTXSW)
+ int oncpu;
+#endif
int prio, static_prio;
struct list_head run_list;
prio_array_t *array;
@@ -716,8 +724,6 @@ struct task_struct {
spinlock_t alloc_lock;
/* Protection of proc_dentry: nesting proc_lock, dcache_lock, write_lock_irq(&tasklist_lock); */
spinlock_t proc_lock;
-/* context-switch lock */
- spinlock_t switch_lock;
/* journalling filesystem info */
void *journal_info;