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Commit 86532d8b authored by Cornelia Huck's avatar Cornelia Huck Committed by Arjan van de Ven
Browse files

async: Handle kthread_run() return codes. 



If we fail to create the manager thread, fall back to non-fastboot.
If we fail to create an async thread, try again after waiting for
a bit.

Signed-off-by: default avatarCornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: default avatarArjan van de Ven <arjan@linux.intel.com>
parent 7a89bbc7

kernel/async.c

+9 −2
Original line number Diff line number Diff line
@@ -54,6 +54,7 @@ asynchronous and synchronous parts of the kernel. 
#include <linux/sched.h>

#include <linux/init.h>

#include <linux/kthread.h>

#include <linux/delay.h>

#include <asm/atomic.h>



static async_cookie_t next_cookie = 1;
@@ -319,7 +320,11 @@ static int async_manager_thread(void *unused) 
		ec = atomic_read(&entry_count);



		while (tc < ec && tc < MAX_THREADS) {

			kthread_run(async_thread, NULL, "async/%i", tc);

			if (IS_ERR(kthread_run(async_thread, NULL, "async/%i",

					       tc))) {

				msleep(100);

				continue;

			}

			atomic_inc(&thread_count);

			tc++;

		}
@@ -334,7 +339,9 @@ static int async_manager_thread(void *unused) 
static int __init async_init(void)

{

	if (async_enabled)

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

		if (IS_ERR(kthread_run(async_manager_thread, NULL,

				       "async/mgr")))

			async_enabled = 0;

	return 0;

}