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authorOleg Nesterov <oleg@redhat.com>2009-04-02 16:58:39 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-02 19:05:02 -0700
commit1b0f7ffd0ea27cd3a0b9ca04e3df9522048c32a3 (patch)
treea8c27acdf95f55f93fe86661c6cba4cd36c8e4f1 /include
parent52ee2dfdd4f51cf422ea6a96a0846dc94244aa37 (diff)
pids: kill signal_struct-> __pgrp/__session and friends
We are wasting 2 words in signal_struct without any reason to implement task_pgrp_nr() and task_session_nr(). task_session_nr() has no callers since 2e2ba22ea4fd4bb85f0fa37c521066db6775cbef, we can remove it. task_pgrp_nr() is still (I believe wrongly) used in fs/autofsX and fs/coda. This patch reimplements task_pgrp_nr() via task_pgrp_nr_ns(), and kills __pgrp/__session and the related helpers. The change in drivers/char/tty_io.c is cosmetic, but hopefully makes sense anyway. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Alan Cox <number6@the-village.bc.nu> [tty parts] Cc: Cedric Le Goater <clg@fr.ibm.com> Cc: Dave Hansen <haveblue@us.ibm.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Pavel Emelyanov <xemul@openvz.org> Cc: Serge Hallyn <serue@us.ibm.com> Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/sched.h43
1 files changed, 6 insertions, 37 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 49df878a0ca..206ac003e8c 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -547,25 +547,8 @@ struct signal_struct {
struct list_head cpu_timers[3];
- /* job control IDs */
-
- /*
- * pgrp and session fields are deprecated.
- * use the task_session_Xnr and task_pgrp_Xnr routines below
- */
-
- union {
- pid_t pgrp __deprecated;
- pid_t __pgrp;
- };
-
struct pid *tty_old_pgrp;
- union {
- pid_t session __deprecated;
- pid_t __session;
- };
-
/* boolean value for session group leader */
int leader;
@@ -1469,16 +1452,6 @@ static inline int rt_task(struct task_struct *p)
return rt_prio(p->prio);
}
-static inline void set_task_session(struct task_struct *tsk, pid_t session)
-{
- tsk->signal->__session = session;
-}
-
-static inline void set_task_pgrp(struct task_struct *tsk, pid_t pgrp)
-{
- tsk->signal->__pgrp = pgrp;
-}
-
static inline struct pid *task_pid(struct task_struct *task)
{
return task->pids[PIDTYPE_PID].pid;
@@ -1552,11 +1525,6 @@ static inline pid_t task_tgid_vnr(struct task_struct *tsk)
}
-static inline pid_t task_pgrp_nr(struct task_struct *tsk)
-{
- return tsk->signal->__pgrp;
-}
-
static inline pid_t task_pgrp_nr_ns(struct task_struct *tsk,
struct pid_namespace *ns)
{
@@ -1569,11 +1537,6 @@ static inline pid_t task_pgrp_vnr(struct task_struct *tsk)
}
-static inline pid_t task_session_nr(struct task_struct *tsk)
-{
- return tsk->signal->__session;
-}
-
static inline pid_t task_session_nr_ns(struct task_struct *tsk,
struct pid_namespace *ns)
{
@@ -1585,6 +1548,12 @@ static inline pid_t task_session_vnr(struct task_struct *tsk)
return __task_pid_nr_ns(tsk, PIDTYPE_SID, NULL);
}
+/* obsolete, do not use */
+static inline pid_t task_pgrp_nr(struct task_struct *tsk)
+{
+ return task_pgrp_nr_ns(tsk, &init_pid_ns);
+}
+
/**
* pid_alive - check that a task structure is not stale
* @p: Task structure to be checked.