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authorCornelia Huck <cornelia.huck@de.ibm.com>2009-01-19 13:45:31 +0100
committerArjan van de Ven <arjan@linux.intel.com>2009-02-08 09:56:10 -0800
commit86532d8b167e71e24da8b564348b52977b76d15f (patch)
tree86cfa88409db2867ddfc45322f7cd3175b6accad
parent7a89bbc74937cd74a6bcf109cfc7c032109639be (diff)
downloadvexpress-lsk-86532d8b167e71e24da8b564348b52977b76d15f.tar.gz
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: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
-rw-r--r--kernel/async.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/kernel/async.c b/kernel/async.c
index 0c90d500ab6..078d5ed150d 100644
--- a/kernel/async.c
+++ b/kernel/async.c
@@ -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;
}