3rd-party/linux-kernel-module-cheat
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bak wait queue

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This commit is contained in:
Ciro Santilli
2017-06-07 08:00:28 +01:00
parent 5c4ae86b89
commit d62826bee2
2 changed files with 92 additions and 2 deletions
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15
kernel_module/wait_queue.c
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@@ -3,6 +3,18 @@
if (!cond)
sleep_until_event
Outcome:
1 0
2 0
# Wait one second.
1 1
2 1
# Wait one second.
1 2
2 2
# ...
*/
#include <linux/delay.h> /* usleep_range */
@@ -34,12 +46,11 @@ static int kthread_func1(void *data)
static int kthread_func2(void *data)
{
set_current_state(TASK_INTERRUPTIBLE);
unsigned int i = 0;
while (!kthread_should_stop()) {
pr_info("2 %u\n", i);
i++;
wait_event(queue, atomic_read(&awake));
wait_event_interruptible(queue, atomic_read(&awake));
atomic_set(&awake, 0);
schedule();
}