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thread: Do not disable interrupts unnecessarily while initializing stack.
[pintos-anon]
/
src
/
threads
/
thread.c
diff --git
a/src/threads/thread.c
b/src/threads/thread.c
index d68c123fb2476420d09557f4f52d4a6fb12949f4..87f22b80607b4faba8ae2b1e9f93dc5d6659d8cc 100644
(file)
--- a/
src/threads/thread.c
+++ b/
src/threads/thread.c
@@
-171,7
+171,6
@@
thread_create (const char *name, int priority,
struct switch_entry_frame *ef;
struct switch_threads_frame *sf;
tid_t tid;
struct switch_entry_frame *ef;
struct switch_threads_frame *sf;
tid_t tid;
- enum intr_level old_level;
ASSERT (function != NULL);
ASSERT (function != NULL);
@@
-184,11
+183,6
@@
thread_create (const char *name, int priority,
init_thread (t, name, priority);
tid = t->tid = allocate_tid ();
init_thread (t, name, priority);
tid = t->tid = allocate_tid ();
- /* Prepare thread for first run by initializing its stack.
- Do this atomically so intermediate values for the 'stack'
- member cannot be observed. */
- old_level = intr_disable ();
-
/* Stack frame for kernel_thread(). */
kf = alloc_frame (t, sizeof *kf);
kf->eip = NULL;
/* Stack frame for kernel_thread(). */
kf = alloc_frame (t, sizeof *kf);
kf->eip = NULL;
@@
-204,8
+198,6
@@
thread_create (const char *name, int priority,
sf->eip = switch_entry;
sf->ebp = 0;
sf->eip = switch_entry;
sf->ebp = 0;
- intr_set_level (old_level);
-
/* Add to run queue. */
thread_unblock (t);
/* Add to run queue. */
thread_unblock (t);