lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Uninline find_task_by_xxx set of functions

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

6
fs/ioprio.c
View File

@@ -94,8 +94,7 @@ asmlinkage long sys_ioprio_set(int which, int who, int ioprio)
if (!who)
p = current;
else
p = find_task_by_pid_ns(who,
current->nsproxy->pid_ns);
p = find_task_by_vpid(who);
if (p)
ret = set_task_ioprio(p, ioprio);
break;
@@ -182,8 +181,7 @@ asmlinkage long sys_ioprio_get(int which, int who)
if (!who)
p = current;
else
p = find_task_by_pid_ns(who,
current->nsproxy->pid_ns);
p = find_task_by_vpid(who);
if (p)
ret = get_task_ioprio(p);
break;