Messages in this thread Patch in this message | | | Subject | [PATCH 2/5] pid: Add macros for interating through tasks by type. | From | (Eric W. Biederman) | Date | Sun, 29 Jan 2006 00:24:20 -0700 |
| |
Currently do_each_task_pid/while_each_task_pid make it possible to iterate through each task of a group of processes given the pid of the group.
do_each_task/while_each_task do the same thing but assume you are atarting with the first task of a process group. This is needed so we can start with a task_ref instead of a pid.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
---
include/linux/pid.h | 12 ++++++++++++ 1 files changed, 12 insertions(+), 0 deletions(-)
34e71e62a13a78350239c18e3e3c31e79593380f diff --git a/include/linux/pid.h b/include/linux/pid.h index e206149..7fa9b2e 100644 --- a/include/linux/pid.h +++ b/include/linux/pid.h @@ -54,4 +54,16 @@ extern void switch_exec_pids(struct task hlist_unhashed(&(task)->pids[type].pid_chain)); \ } \ +#define do_each_task(task, type) \ + if (task) { \ + prefetch((task)->pids[type].pid_list.next); \ + do { + +#define while_each_task(task, type) \ + } while (task = pid_task((task)->pids[type].pid_list.next, \ + (type)), \ + prefetch((task)->pids[type].pid_list.next), \ + hlist_unhashed(&(task)->pids[type].pid_chain)); \ + } + #endif /* _LINUX_PID_H */ -- 1.1.5.g3480 - 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/
| |