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infra: safeguard signals interfering with kthreads

This commit is contained in:
Thomas Schoebel-Theuer 2019-11-12 08:59:49 +01:00
parent 9c00104b28
commit e54cab1f95
1 changed files with 6 additions and 2 deletions
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8
kernel/brick.h
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@ -656,7 +656,10 @@ typedef enum {
#define brick_thread_create(_thread_fn, _data, _fmt, _args...) \ #define brick_thread_create(_thread_fn, _data, _fmt, _args...) \
({ \ ({ \
brick_thread_t *_thr = kthread_create(_thread_fn, _data, _fmt, ##_args); \ brick_thread_t *_thr; \
\
flush_signals(current); \
_thr = kthread_create(_thread_fn, _data, _fmt, ##_args); \
if (unlikely(IS_ERR(_thr))) { \ if (unlikely(IS_ERR(_thr))) { \
int _err = PTR_ERR(_thr); \ int _err = PTR_ERR(_thr); \
BRICK_ERR("cannot create thread '%s', status = %d\n", _fmt, _err); \ BRICK_ERR("cannot create thread '%s', status = %d\n", _fmt, _err); \
@ -674,13 +677,14 @@ typedef enum {
#define brick_thread_stop(_thread) \ #define brick_thread_stop(_thread) \
do { \ do { \
struct task_struct *__thread__ = (_thread); \ struct task_struct *__thread__ = (_thread); \
\
if (likely(__thread__)) { \ if (likely(__thread__)) { \
BRICK_INF("stopping thread '%s'\n", __thread__->comm); \ BRICK_INF("stopping thread '%s'\n", __thread__->comm); \
kthread_stop(__thread__); \ kthread_stop(__thread__); \
BRICK_INF("thread '%s' finished.\n", __thread__->comm); \ BRICK_INF("thread '%s' finished.\n", __thread__->comm); \
remove_binding(__thread__); \ remove_binding(__thread__); \
put_task_struct(__thread__); \ put_task_struct(__thread__); \
_thread = NULL; \ (_thread) = NULL; \
} \ } \
} while (0) } while (0)