Signed-off-by: Andrey Vagin <[email protected]>
---
include/uapi/linux/task_diag.h | 1 +
kernel/taskdiag.c | 15 ++++++++++++++-
2 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/include/uapi/linux/task_diag.h b/include/uapi/linux/task_diag.h
index 9e4c3c4..e1d09e6 100644
--- a/include/uapi/linux/task_diag.h
+++ b/include/uapi/linux/task_diag.h
@@ -150,6 +150,7 @@ static inline struct task_diag_vma_stat
*task_diag_vma_stat(struct task_diag_vma
#define TASK_DIAG_DUMP_ALL 0
#define TASK_DIAG_DUMP_CHILDREN 1
+#define TASK_DIAG_DUMP_THREAD 2
struct task_diag_pid {
__u64 show_flags;
diff --git a/kernel/taskdiag.c b/kernel/taskdiag.c
index 8e00c3e..dc319bf 100644
--- a/kernel/taskdiag.c
+++ b/kernel/taskdiag.c
@@ -559,8 +559,15 @@ static struct task_struct *iter_start(struct task_iter
*iter)
}
switch (iter->req.dump_strategy) {
- case TASK_DIAG_DUMP_CHILDREN:
+ case TASK_DIAG_DUMP_THREAD:
+ if (iter->parent == NULL)
+ return ERR_PTR(-ESRCH);
+
+ iter->pos = iter->cb->args[0];
+ iter->task = task_first_tid(iter->parent, 0, iter->pos,
iter->ns);
+ return iter->task;
+ case TASK_DIAG_DUMP_CHILDREN:
if (iter->parent == NULL)
return ERR_PTR(-ESRCH);
@@ -581,6 +588,12 @@ static struct task_struct *iter_start(struct task_iter
*iter)
static struct task_struct *iter_next(struct task_iter *iter)
{
switch (iter->req.dump_strategy) {
+ case TASK_DIAG_DUMP_THREAD:
+ iter->pos++;
+ iter->task = task_next_tid(iter->task);
+ iter->cb->args[0] = iter->pos;
+ iter->cb->args[1] = task_pid_nr_ns(iter->task, iter->ns);
+ return iter->task;
case TASK_DIAG_DUMP_CHILDREN:
iter->pos++;
iter->task = task_next_child(iter->parent, iter->task,
iter->pos);
--
2.1.0
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