summaryrefslogtreecommitdiff
path: root/fs/proc/base.c
diff options
context:
space:
mode:
authorOleg Nesterov <oleg@redhat.com>2010-05-27 01:43:22 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-27 20:12:47 +0400
commit7e49827cc937a742ae02078b483e3eb78f791a2a (patch)
tree0f3e0a8483a41b2221c74b8286b2349af03dab04 /fs/proc/base.c
parent6e1be45aa6ba6a36c0312f65ecf311135c73001d (diff)
downloadlinux-7e49827cc937a742ae02078b483e3eb78f791a2a.tar.xz
proc: get_nr_threads() doesn't need ->siglock any longer
Now that task->signal can't go away get_nr_threads() doesn't need ->siglock to read signal->count. Also, make it inline, move into sched.h, and convert 2 other proc users of signal->count to use this (now trivial) helper. Henceforth get_nr_threads() is the only valid user of signal->count, we are ready to turn it into "int nr_threads" or, perhaps, kill it. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: David Howells <dhowells@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Acked-by: 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 'fs/proc/base.c')
-rw-r--r--fs/proc/base.c12
1 files changed, 0 insertions, 12 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c
index c7f9f23449dc..c384e8b84dff 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -166,18 +166,6 @@ static int get_fs_path(struct task_struct *task, struct path *path, bool root)
return result;
}
-static int get_nr_threads(struct task_struct *tsk)
-{
- unsigned long flags;
- int count = 0;
-
- if (lock_task_sighand(tsk, &flags)) {
- count = atomic_read(&tsk->signal->count);
- unlock_task_sighand(tsk, &flags);
- }
- return count;
-}
-
static int proc_cwd_link(struct inode *inode, struct path *path)
{
struct task_struct *task = get_proc_task(inode);