There's two patterns to check signals in the __wait_event*() macros: if (!signal_pending(current)) { schedule(); continue; } ret = -ERESTARTSYS; break; And the more natural: if (signal_pending(current)) { ret = -ERESTARTSYS; break; } schedule(); Change them all into the latter form. Reviewed-by: Oleg Nesterov Signed-off-by: Peter Zijlstra --- include/linux/tty.h | 13 ++++++------- include/linux/wait.h | 35 ++++++++++++++++------------------- 2 files changed, 22 insertions(+), 26 deletions(-) --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -686,14 +686,13 @@ do { \ prepare_to_wait(&wq, &__wait, TASK_INTERRUPTIBLE); \ if (condition) \ break; \ - if (!signal_pending(current)) { \ - tty_unlock(tty); \ - schedule(); \ - tty_lock(tty); \ - continue; \ + if (signal_pending(current)) { \ + ret = -ERESTARTSYS; \ + break; \ } \ - ret = -ERESTARTSYS; \ - break; \ + tty_unlock(tty); \ + schedule(); \ + tty_lock(tty); \ } \ finish_wait(&wq, &__wait); \ } while (0) --- a/include/linux/wait.h +++ b/include/linux/wait.h @@ -261,12 +261,11 @@ do { \ prepare_to_wait(&wq, &__wait, TASK_INTERRUPTIBLE); \ if (condition) \ break; \ - if (!signal_pending(current)) { \ - schedule(); \ - continue; \ + if (signal_pending(current)) { \ + ret = -ERESTARTSYS; \ + break; \ } \ - ret = -ERESTARTSYS; \ - break; \ + schedule(); \ } \ finish_wait(&wq, &__wait); \ } while (0) @@ -302,14 +301,13 @@ do { \ prepare_to_wait(&wq, &__wait, TASK_INTERRUPTIBLE); \ if (condition) \ break; \ - if (!signal_pending(current)) { \ - ret = schedule_timeout(ret); \ - if (!ret) \ - break; \ - continue; \ + if (signal_pending(current)) { \ + ret = -ERESTARTSYS; \ + break; \ } \ - ret = -ERESTARTSYS; \ - break; \ + ret = schedule_timeout(ret); \ + if (!ret) \ + break; \ } \ if (!ret && (condition)) \ ret = 1; \ @@ -439,14 +437,13 @@ do { \ finish_wait(&wq, &__wait); \ break; \ } \ - if (!signal_pending(current)) { \ - schedule(); \ - continue; \ - } \ - ret = -ERESTARTSYS; \ - abort_exclusive_wait(&wq, &__wait, \ + if (signal_pending(current)) { \ + ret = -ERESTARTSYS; \ + abort_exclusive_wait(&wq, &__wait, \ TASK_INTERRUPTIBLE, NULL); \ - break; \ + break; \ + } \ + schedule(); \ } \ } while (0) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/