diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-05-18 07:55:55 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-05-18 07:55:55 +0200 |
| commit | 48a789079a146ecd916e29cc5e47410d9cb05fbe (patch) | |
| tree | 04f890f10e9cbdd97b4bf72647656ec94cb8d51f /kernel/trace/preemptirq_delay_test.c | |
| parent | 2478be82de44bee4346eb1f48d4cfa28cd99d2d0 (diff) | |
| parent | b9bbe6ed63b2b9f2c9ee5cbd0f2c946a2723f4ce (diff) | |
Merge 5.7-rc6 into usb-next
We need the USB fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/trace/preemptirq_delay_test.c')
| -rw-r--r-- | kernel/trace/preemptirq_delay_test.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/kernel/trace/preemptirq_delay_test.c b/kernel/trace/preemptirq_delay_test.c index c4c86de63cf9..312d1a0ca3b6 100644 --- a/kernel/trace/preemptirq_delay_test.c +++ b/kernel/trace/preemptirq_delay_test.c @@ -16,6 +16,7 @@ #include <linux/printk.h> #include <linux/string.h> #include <linux/sysfs.h> +#include <linux/completion.h> static ulong delay = 100; static char test_mode[12] = "irq"; @@ -28,6 +29,8 @@ MODULE_PARM_DESC(delay, "Period in microseconds (100 us default)"); MODULE_PARM_DESC(test_mode, "Mode of the test such as preempt, irq, or alternate (default irq)"); MODULE_PARM_DESC(burst_size, "The size of a burst (default 1)"); +static struct completion done; + #define MIN(x, y) ((x) < (y) ? (x) : (y)) static void busy_wait(ulong time) @@ -114,6 +117,8 @@ static int preemptirq_delay_run(void *data) for (i = 0; i < s; i++) (testfuncs[i])(i); + complete(&done); + set_current_state(TASK_INTERRUPTIBLE); while (!kthread_should_stop()) { schedule(); @@ -128,15 +133,18 @@ static int preemptirq_delay_run(void *data) static int preemptirq_run_test(void) { struct task_struct *task; - char task_name[50]; + init_completion(&done); + snprintf(task_name, sizeof(task_name), "%s_test", test_mode); task = kthread_run(preemptirq_delay_run, NULL, task_name); if (IS_ERR(task)) return PTR_ERR(task); - if (task) + if (task) { + wait_for_completion(&done); kthread_stop(task); + } return 0; } |