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Uninline find_task_by_xxx set of functions

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The find_task_by_something is a set of macros are used to find task by pid
depending on what kind of pid is proposed - global or virtual one.  All of
them are wrappers above the most generic one - find_task_by_pid_type_ns() -
and just substitute some args for it.

It turned out, that dereferencing the current->nsproxy->pid_ns construction
and pushing one more argument on the stack inline cause kernel text size to
grow.

This patch moves all this stuff out-of-line into kernel/pid.c.  Together
with the next patch it saves a bit less than 400 bytes from the .text
section.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Paul Menage <menage@google.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Pavel Emelyanov
2007-10-18 23:40:16 -07:00
committed by Linus Torvalds
parent b488893a39
commit 228ebcbe63
12 changed files with 41 additions and 38 deletions
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15
include/linux/sched.h
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@@ -1523,9 +1523,8 @@ extern struct pid_namespace init_pid_ns;
* type and namespace specified
* find_task_by_pid_ns():
* finds a task by its pid in the specified namespace
* find_task_by_pid_type():
* finds a task by its global id with the specified type, e.g.
* by global session id
* find_task_by_vpid():
* finds a task by its virtual pid
* find_task_by_pid():
* finds a task by its global pid
*
@@ -1535,12 +1534,10 @@ extern struct pid_namespace init_pid_ns;
extern struct task_struct *find_task_by_pid_type_ns(int type, int pid,
struct pid_namespace *ns);
#define find_task_by_pid_ns(nr, ns) \
find_task_by_pid_type_ns(PIDTYPE_PID, nr, ns)
#define find_task_by_pid_type(type, nr) \
find_task_by_pid_type_ns(type, nr, &init_pid_ns)
#define find_task_by_pid(nr) \
find_task_by_pid_type(PIDTYPE_PID, nr)
extern struct task_struct *find_task_by_pid(pid_t nr);
extern struct task_struct *find_task_by_vpid(pid_t nr);
extern struct task_struct *find_task_by_pid_ns(pid_t nr,
struct pid_namespace *ns);
extern void __set_special_pids(pid_t session, pid_t pgrp);