Commit cdb80f63 authored by Arjan van de Ven's avatar Arjan van de Ven
Browse files

async: make async a command line option for now 



... and have it default off.
This does allow people to work with it for testing.

Signed-off-by: default avatarArjan van de Ven <arjan@linux.intel.com>
parent b32714ba

kernel/async.c

+14 −2
Original line number Diff line number Diff line
@@ -65,6 +65,8 @@ static LIST_HEAD(async_pending); 
static LIST_HEAD(async_running);

static DEFINE_SPINLOCK(async_lock);



static int async_enabled = 0;



struct async_entry {

	struct list_head list;

	async_cookie_t   cookie;
@@ -169,7 +171,7 @@ static async_cookie_t __async_schedule(async_func_ptr *ptr, void *data, struct l 
	 * If we're out of memory or if there's too much work

	 * pending already, we execute synchronously.

	 */

	if (!entry || atomic_read(&entry_count) > MAX_WORK) {

	if (!async_enabled || !entry || atomic_read(&entry_count) > MAX_WORK) {

		kfree(entry);

		spin_lock_irqsave(&async_lock, flags);

		newcookie = next_cookie++;
@@ -316,8 +318,18 @@ static int async_manager_thread(void *unused) 


static int __init async_init(void)

{

	if (async_enabled)

		kthread_run(async_manager_thread, NULL, "async/mgr");

	return 0;

}



static int __init setup_async(char *str)

{

	async_enabled = 1;

	return 1;

}



__setup("fastboot", setup_async);





core_initcall(async_init);