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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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9
kernel/sys.c
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@@ -152,8 +152,7 @@ asmlinkage long sys_setpriority(int which, int who, int niceval)
switch (which) {
case PRIO_PROCESS:
if (who)
p = find_task_by_pid_ns(who,
current->nsproxy->pid_ns);
p = find_task_by_vpid(who);
else
p = current;
if (p)
@@ -210,8 +209,7 @@ asmlinkage long sys_getpriority(int which, int who)
switch (which) {
case PRIO_PROCESS:
if (who)
p = find_task_by_pid_ns(who,
current->nsproxy->pid_ns);
p = find_task_by_vpid(who);
else
p = current;
if (p) {
@@ -1067,7 +1065,8 @@ asmlinkage long sys_setsid(void)
* session id and so the check will always fail and make it so
* init cannot successfully call setsid.
*/
if (session > 1 && find_task_by_pid_type(PIDTYPE_PGID, session))
if (session > 1 && find_task_by_pid_type_ns(PIDTYPE_PGID,
session, &init_pid_ns))
goto out;
group_leader->signal->leader = 1;