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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2008-11-23 18:43:39 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-11-23 22:34:02 +0100 |
| commit | 65afa5e603d507014580ead016ec887b49e1afa6 (patch) | |
| tree | 0ee309e4193e90587b2febda09143891e0591cdc | |
| parent | eae849ca034c7f1015f0a6f17421ebc737f0a069 (diff) | |
| download | linux-65afa5e603d507014580ead016ec887b49e1afa6.tar.bz2 | |
tracing/function-return-tracer: free the return stack on free_task()
Impact: avoid losing some traces when a task is freed
do_exit() is not the last function called when a task finishes.
There are still some functions which are to be called such as
ree_task(). So we delay the freeing of the return stack to the
last moment.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | kernel/exit.c | 2 | ||||
| -rw-r--r-- | kernel/fork.c | 1 |
2 files changed, 1 insertions, 2 deletions
diff --git a/kernel/exit.c b/kernel/exit.c index ef04d03b3286..e5ae36ebe8af 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -47,7 +47,6 @@ #include <linux/task_io_accounting_ops.h> #include <linux/tracehook.h> #include <trace/sched.h> -#include <linux/ftrace.h> #include <asm/uaccess.h> #include <asm/unistd.h> @@ -1128,7 +1127,6 @@ NORET_TYPE void do_exit(long code) preempt_disable(); /* causes final put_task_struct in finish_task_switch(). */ tsk->state = TASK_DEAD; - ftrace_retfunc_exit_task(tsk); schedule(); BUG(); /* Avoid "noreturn function does return". */ diff --git a/kernel/fork.c b/kernel/fork.c index fbf4a4c0a628..d6e1a3205f62 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -140,6 +140,7 @@ void free_task(struct task_struct *tsk) prop_local_destroy_single(&tsk->dirties); free_thread_info(tsk->stack); rt_mutex_debug_task_free(tsk); + ftrace_retfunc_exit_task(tsk); free_task_struct(tsk); } EXPORT_SYMBOL(free_task); |