Displaying 4 results from an estimated 4 matches for "vhost_task_flags_stop".
2023 Jun 02
2
[PATCH 1/1] fork, vhost: Use CLONE_THREAD to fix freezer/ps regression
...or example,
On 06/01, Mike Christie wrote:
>
> static int vhost_task_fn(void *data)
> {
> struct vhost_task *vtsk = data;
> - int ret;
> + bool dead = false;
> +
> + for (;;) {
> + bool did_work;
> +
> + /* mb paired w/ vhost_task_stop */
> + if (test_bit(VHOST_TASK_FLAGS_STOP, &vtsk->flags))
> + break;
> +
> + if (!dead && signal_pending(current)) {
> + struct ksignal ksig;
> + /*
> + * Calling get_signal will block in SIGSTOP,
> + * or clear fatal_signal_pending, but remember
> + * what was set.
> + *
> +...
2023 Jun 01
4
[PATCH 1/1] fork, vhost: Use CLONE_THREAD to fix freezer/ps regression
...current->flags & PF_IO_WORKER)
+ if (current->flags & PF_USER_WORKER)
goto out;
/*
diff --git a/kernel/vhost_task.c b/kernel/vhost_task.c
index b7cbd66f889e..f80d5c51ae67 100644
--- a/kernel/vhost_task.c
+++ b/kernel/vhost_task.c
@@ -12,58 +12,88 @@ enum vhost_task_flags {
VHOST_TASK_FLAGS_STOP,
};
+struct vhost_task {
+ bool (*fn)(void *data);
+ void *data;
+ struct completion exited;
+ unsigned long flags;
+ struct task_struct *task;
+};
+
static int vhost_task_fn(void *data)
{
struct vhost_task *vtsk = data;
- int ret;
+ bool dead = false;
+
+ for (;;) {
+ bool did_work;
+
+ /...
2023 May 22
3
[PATCH 0/3] vhost: Fix freezer/ps regressions
The following patches made over Linus's tree fix the 2 bugs:
1. vhost worker task shows up as a process forked from the parent
that did VHOST_SET_OWNER ioctl instead of a process under root/kthreadd.
This was causing breaking scripts.
2. vhost_tasks didn't disable or add support for freeze requests.
The following patches fix these issues by making the vhost_task task
a thread under the
2023 May 22
2
[PATCH 3/3] fork, vhost: Use CLONE_THREAD to fix freezer/ps regression
...; index b7cbd66f889e..7a2d7d9fe772 100644
> --- a/kernel/vhost_task.c
> +++ b/kernel/vhost_task.c
> @@ -31,22 +31,13 @@ static int vhost_task_fn(void *data)
> */
> void vhost_task_stop(struct vhost_task *vtsk)
> {
> - pid_t pid = vtsk->task->pid;
> -
> set_bit(VHOST_TASK_FLAGS_STOP, &vtsk->flags);
> wake_up_process(vtsk->task);
> /*
> * Make sure vhost_task_fn is no longer accessing the vhost_task before
> - * freeing it below. If userspace crashed or exited without closing,
> - * then the vhost_task->task could already be marked dead so
&...