From e713d0dab21a68500720e222fa02567fc7dfb14b Mon Sep 17 00:00:00 2001 From: Sukadev Bhattiprolu Date: Thu, 10 May 2007 22:22:58 -0700 Subject: attach_pid() with struct pid parameter attach_pid() currently takes a pid_t and then uses find_pid() to find the corresponding struct pid. Sometimes we already have the struct pid. We can then skip find_pid() if attach_pid() were to take a struct pid parameter. Signed-off-by: Sukadev Bhattiprolu Cc: Cedric Le Goater Cc: Dave Hansen Cc: Serge Hallyn Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/fork.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'kernel/fork.c') diff --git a/kernel/fork.c b/kernel/fork.c index da92e01aba6..6031800c94c 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -1249,16 +1249,19 @@ static struct task_struct *copy_process(unsigned long clone_flags, __ptrace_link(p, current->parent); if (thread_group_leader(p)) { + pid_t pgid = process_group(current); + pid_t sid = process_session(current); + p->signal->tty = current->signal->tty; - p->signal->pgrp = process_group(current); + p->signal->pgrp = pgid; set_signal_session(p->signal, process_session(current)); - attach_pid(p, PIDTYPE_PGID, process_group(p)); - attach_pid(p, PIDTYPE_SID, process_session(p)); + attach_pid(p, PIDTYPE_PGID, find_pid(pgid)); + attach_pid(p, PIDTYPE_SID, find_pid(sid)); list_add_tail_rcu(&p->tasks, &init_task.tasks); __get_cpu_var(process_counts)++; } - attach_pid(p, PIDTYPE_PID, p->pid); + attach_pid(p, PIDTYPE_PID, find_pid(p->pid)); nr_threads++; } -- cgit v1.2.3