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-rw-r--r--kernel/async.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/kernel/async.c b/kernel/async.c
index 64cc916299a5..f286e9f2b736 100644
--- a/kernel/async.c
+++ b/kernel/async.c
@@ -65,6 +65,8 @@ static LIST_HEAD(async_pending);
65static LIST_HEAD(async_running); 65static LIST_HEAD(async_running);
66static DEFINE_SPINLOCK(async_lock); 66static DEFINE_SPINLOCK(async_lock);
67 67
68static int async_enabled = 0;
69
68struct async_entry { 70struct async_entry {
69 struct list_head list; 71 struct list_head list;
70 async_cookie_t cookie; 72 async_cookie_t cookie;
@@ -169,7 +171,7 @@ static async_cookie_t __async_schedule(async_func_ptr *ptr, void *data, struct l
169 * If we're out of memory or if there's too much work 171 * If we're out of memory or if there's too much work
170 * pending already, we execute synchronously. 172 * pending already, we execute synchronously.
171 */ 173 */
172 if (!entry || atomic_read(&entry_count) > MAX_WORK) { 174 if (!async_enabled || !entry || atomic_read(&entry_count) > MAX_WORK) {
173 kfree(entry); 175 kfree(entry);
174 spin_lock_irqsave(&async_lock, flags); 176 spin_lock_irqsave(&async_lock, flags);
175 newcookie = next_cookie++; 177 newcookie = next_cookie++;
@@ -316,8 +318,18 @@ static int async_manager_thread(void *unused)
316 318
317static int __init async_init(void) 319static int __init async_init(void)
318{ 320{
319 kthread_run(async_manager_thread, NULL, "async/mgr"); 321 if (async_enabled)
322 kthread_run(async_manager_thread, NULL, "async/mgr");
320 return 0; 323 return 0;
321} 324}
322 325
326static int __init setup_async(char *str)
327{
328 async_enabled = 1;
329 return 1;
330}
331
332__setup("fastboot", setup_async);
333
334
323core_initcall(async_init); 335core_initcall(async_init);