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-rw-r--r--include/trace/sched.h45
-rw-r--r--kernel/exit.c10
-rw-r--r--kernel/fork.c3
-rw-r--r--kernel/kthread.c5
-rw-r--r--kernel/sched.c17
-rw-r--r--kernel/signal.c3
6 files changed, 71 insertions, 12 deletions
diff --git a/include/trace/sched.h b/include/trace/sched.h
new file mode 100644
index 000000000000..506ae1323656
--- /dev/null
+++ b/include/trace/sched.h
@@ -0,0 +1,45 @@
+#ifndef _TRACE_SCHED_H
+#define _TRACE_SCHED_H
+
+#include <linux/sched.h>
+#include <linux/tracepoint.h>
+
+DEFINE_TRACE(sched_kthread_stop,
+ TPPROTO(struct task_struct *t),
+ TPARGS(t));
+DEFINE_TRACE(sched_kthread_stop_ret,
+ TPPROTO(int ret),
+ TPARGS(ret));
+DEFINE_TRACE(sched_wait_task,
+ TPPROTO(struct rq *rq, struct task_struct *p),
+ TPARGS(rq, p));
+DEFINE_TRACE(sched_wakeup,
+ TPPROTO(struct rq *rq, struct task_struct *p),
+ TPARGS(rq, p));
+DEFINE_TRACE(sched_wakeup_new,
+ TPPROTO(struct rq *rq, struct task_struct *p),
+ TPARGS(rq, p));
+DEFINE_TRACE(sched_switch,
+ TPPROTO(struct rq *rq, struct task_struct *prev,
+ struct task_struct *next),
+ TPARGS(rq, prev, next));
+DEFINE_TRACE(sched_migrate_task,
+ TPPROTO(struct rq *rq, struct task_struct *p, int dest_cpu),
+ TPARGS(rq, p, dest_cpu));
+DEFINE_TRACE(sched_process_free,
+ TPPROTO(struct task_struct *p),
+ TPARGS(p));
+DEFINE_TRACE(sched_process_exit,
+ TPPROTO(struct task_struct *p),
+ TPARGS(p));
+DEFINE_TRACE(sched_process_wait,
+ TPPROTO(struct pid *pid),
+ TPARGS(pid));
+DEFINE_TRACE(sched_process_fork,
+ TPPROTO(struct task_struct *parent, struct task_struct *child),
+ TPARGS(parent, child));
+DEFINE_TRACE(sched_signal_send,
+ TPPROTO(int sig, struct task_struct *p),
+ TPARGS(sig, p));
+
+#endif
diff --git a/kernel/exit.c b/kernel/exit.c
index 85a83c831856..7b71f87f1207 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -47,6 +47,7 @@
#include <linux/blkdev.h>
#include <linux/task_io_accounting_ops.h>
#include <linux/tracehook.h>
+#include <trace/sched.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
@@ -149,7 +150,10 @@ static void __exit_signal(struct task_struct *tsk)
static void delayed_put_task_struct(struct rcu_head *rhp)
{
- put_task_struct(container_of(rhp, struct task_struct, rcu));
+ struct task_struct *tsk = container_of(rhp, struct task_struct, rcu);
+
+ trace_sched_process_free(tsk);
+ put_task_struct(tsk);
}
@@ -1074,6 +1078,8 @@ NORET_TYPE void do_exit(long code)
if (group_dead)
acct_process();
+ trace_sched_process_exit(tsk);
+
exit_sem(tsk);
exit_files(tsk);
exit_fs(tsk);
@@ -1675,6 +1681,8 @@ static long do_wait(enum pid_type type, struct pid *pid, int options,
struct task_struct *tsk;
int retval;
+ trace_sched_process_wait(pid);
+
add_wait_queue(&current->signal->wait_chldexit,&wait);
repeat:
/*
diff --git a/kernel/fork.c b/kernel/fork.c
index 30de644a40c4..cfaff92f61ff 100644
--- 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>
@@ -1364,6 +1365,8 @@ 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)
diff --git a/kernel/kthread.c b/kernel/kthread.c
index 96cff2f8710b..50598e29439a 100644
--- a/kernel/kthread.c
+++ b/kernel/kthread.c
@@ -13,6 +13,7 @@
#include <linux/file.h>
#include <linux/module.h>
#include <linux/mutex.h>
+#include <trace/sched.h>
#define KTHREAD_NICE_LEVEL (-5)
@@ -206,6 +207,8 @@ int kthread_stop(struct task_struct *k)
/* It could exit after stop_info.k set, but before wake_up_process. */
get_task_struct(k);
+ trace_sched_kthread_stop(k);
+
/* Must init completion *before* thread sees kthread_stop_info.k */
init_completion(&kthread_stop_info.done);
smp_wmb();
@@ -221,6 +224,8 @@ int kthread_stop(struct task_struct *k)
ret = kthread_stop_info.err;
mutex_unlock(&kthread_stop_lock);
+ trace_sched_kthread_stop_ret(ret);
+
return ret;
}
EXPORT_SYMBOL(kthread_stop);
diff --git a/kernel/sched.c b/kernel/sched.c
index 6f230596bd0c..3d1ad130c24e 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -71,6 +71,7 @@
#include <linux/debugfs.h>
#include <linux/ctype.h>
#include <linux/ftrace.h>
+#include <trace/sched.h>
#include <asm/tlb.h>
#include <asm/irq_regs.h>
@@ -1936,6 +1937,7 @@ unsigned long wait_task_inactive(struct task_struct *p, long match_state)
* just go back and repeat.
*/
rq = task_rq_lock(p, &flags);
+ trace_sched_wait_task(rq, p);
running = task_running(rq, p);
on_rq = p->se.on_rq;
ncsw = 0;
@@ -2297,9 +2299,7 @@ out_activate:
success = 1;
out_running:
- trace_mark(kernel_sched_wakeup,
- "pid %d state %ld ## rq %p task %p rq->curr %p",
- p->pid, p->state, rq, p, rq->curr);
+ trace_sched_wakeup(rq, p);
check_preempt_curr(rq, p, sync);
p->state = TASK_RUNNING;
@@ -2432,9 +2432,7 @@ void wake_up_new_task(struct task_struct *p, unsigned long clone_flags)
p->sched_class->task_new(rq, p);
inc_nr_running(rq);
}
- trace_mark(kernel_sched_wakeup_new,
- "pid %d state %ld ## rq %p task %p rq->curr %p",
- p->pid, p->state, rq, p, rq->curr);
+ trace_sched_wakeup_new(rq, p);
check_preempt_curr(rq, p, 0);
#ifdef CONFIG_SMP
if (p->sched_class->task_wake_up)
@@ -2607,11 +2605,7 @@ context_switch(struct rq *rq, struct task_struct *prev,
struct mm_struct *mm, *oldmm;
prepare_task_switch(rq, prev, next);
- trace_mark(kernel_sched_schedule,
- "prev_pid %d next_pid %d prev_state %ld "
- "## rq %p prev %p next %p",
- prev->pid, next->pid, prev->state,
- rq, prev, next);
+ trace_sched_switch(rq, prev, next);
mm = next->mm;
oldmm = prev->active_mm;
/*
@@ -2851,6 +2845,7 @@ static void sched_migrate_task(struct task_struct *p, int dest_cpu)
|| unlikely(!cpu_active(dest_cpu)))
goto out;
+ trace_sched_migrate_task(rq, p, dest_cpu);
/* force the process onto the specified CPU */
if (migrate_task(p, dest_cpu, &req)) {
/* Need to wait for migration thread (might exit: take ref). */
diff --git a/kernel/signal.c b/kernel/signal.c
index e661b01d340f..bf40ecc87b26 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -27,6 +27,7 @@
#include <linux/freezer.h>
#include <linux/pid_namespace.h>
#include <linux/nsproxy.h>
+#include <trace/sched.h>
#include <asm/param.h>
#include <asm/uaccess.h>
@@ -803,6 +804,8 @@ static int send_signal(int sig, struct siginfo *info, struct task_struct *t,
struct sigpending *pending;
struct sigqueue *q;
+ trace_sched_signal_send(sig, t);
+
assert_spin_locked(&t->sighand->siglock);
if (!prepare_signal(sig, t))
return 0;
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