Merge branch 'tracing-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[linux-2.6-omap-h63xx.git] / kernel / fork.c

diff --git a/kernel/fork.c b/kernel/fork.c
index a8ac2efb8e306a4e536f6d0d1d2476d751c3619f..4d093552dd6e79aea8553b32e1ff465cd0439116 100644 (file)
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -58,6 +58,7 @@
 #include <linux/tty.h>
 #include <linux/proc_fs.h>
 #include <linux/blkdev.h>
+#include <trace/sched.h>
 
 #include <asm/pgtable.h>
 #include <asm/pgalloc.h>
@@ -791,7 +792,7 @@ static int copy_signal(unsigned long clone_flags, struct task_struct *tsk)
        int ret;
 
        if (clone_flags & CLONE_THREAD) {
-               ret = thread_group_cputime_clone_thread(current, tsk);
+               ret = thread_group_cputime_clone_thread(current);
                if (likely(!ret)) {
                        atomic_inc(&current->signal->count);
                        atomic_inc(&current->signal->live);
@@ -826,6 +827,7 @@ static int copy_signal(unsigned long clone_flags, struct task_struct *tsk)
 
        sig->leader = 0;        /* session leadership doesn't inherit */
        sig->tty_old_pgrp = NULL;
+       sig->tty = NULL;
 
        sig->cutime = sig->cstime = cputime_zero;
        sig->gtime = cputime_zero;
@@ -834,10 +836,6 @@ static int copy_signal(unsigned long clone_flags, struct task_struct *tsk)
        sig->min_flt = sig->maj_flt = sig->cmin_flt = sig->cmaj_flt = 0;
        sig->inblock = sig->oublock = sig->cinblock = sig->coublock = 0;
        task_io_accounting_init(&sig->ioac);
-       sig->sum_sched_runtime = 0;
-       INIT_LIST_HEAD(&sig->cpu_timers[0]);
-       INIT_LIST_HEAD(&sig->cpu_timers[1]);
-       INIT_LIST_HEAD(&sig->cpu_timers[2]);
        taskstats_tgid_init(sig);
 
        task_lock(current->group_leader);
@@ -857,6 +855,7 @@ void __cleanup_signal(struct signal_struct *sig)
 {
        thread_group_cputime_free(sig);
        exit_thread_group_keys(sig);
+       tty_kref_put(sig->tty);
        kmem_cache_free(signal_cachep, sig);
 }
 
@@ -1239,7 +1238,8 @@ static struct task_struct *copy_process(unsigned long clone_flags,
                                p->nsproxy->pid_ns->child_reaper = p;
 
                        p->signal->leader_pid = pid;
-                       p->signal->tty = current->signal->tty;
+                       tty_kref_put(p->signal->tty);
+                       p->signal->tty = tty_kref_get(current->signal->tty);
                        set_task_pgrp(p, task_pgrp_nr(current));
                        set_task_session(p, task_session_nr(current));
                        attach_pid(p, PIDTYPE_PGID, task_pgrp(current));
@@ -1373,6 +1373,8 @@ long do_fork(unsigned long clone_flags,
        if (!IS_ERR(p)) {
                struct completion vfork;
 
+               trace_sched_process_fork(current, p);
+
                nr = task_pid_vnr(p);
 
                if (clone_flags & CLONE_PARENT_SETTID)