From: Frederic Weisbecker Date: Sun, 23 Nov 2008 17:43:39 +0000 (+0100) Subject: tracing/function-return-tracer: free the return stack on free_task() X-Git-Tag: v2.6.29-rc1~586^2~49^4 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=65afa5e603d507014580ead016ec887b49e1afa6;p=linux-2.6-omap-h63xx.git 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 Signed-off-by: Ingo Molnar --- diff --git a/kernel/exit.c b/kernel/exit.c index ef04d03b328..e5ae36ebe8a 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -47,7 +47,6 @@ #include #include #include -#include #include #include @@ -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 fbf4a4c0a62..d6e1a3205f6 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);