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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-05-25 17:51:48 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2017-08-17 16:26:05 +0200 |
| commit | ccdd29ffffa7246cb359b9408772858a15fc4ea5 (patch) | |
| tree | c3267c792e96692f57e28f740ff42a4a1395487b /kernel/exit.c | |
| parent | rcu: Drive TASKS_RCU directly off of PREEMPT (diff) | |
| download | linux-ccdd29ffffa7246cb359b9408772858a15fc4ea5.tar.xz linux-ccdd29ffffa7246cb359b9408772858a15fc4ea5.zip | |
rcu: Create reasonable API for do_exit() TASKS_RCU processing
Currently, the exit-time support for TASKS_RCU is open-coded in do_exit().
This commit creates exit_tasks_rcu_start() and exit_tasks_rcu_finish()
APIs for do_exit() use. This has the benefit of confining the use of the
tasks_rcu_exit_srcu variable to one file, allowing it to become static.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/exit.c')
| -rw-r--r-- | kernel/exit.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/kernel/exit.c b/kernel/exit.c index c5548faa9f37..d297c525f188 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -764,7 +764,6 @@ void __noreturn do_exit(long code) { struct task_struct *tsk = current; int group_dead; - TASKS_RCU(int tasks_rcu_i); profile_task_exit(tsk); kcov_task_exit(tsk); @@ -881,9 +880,7 @@ void __noreturn do_exit(long code) */ flush_ptrace_hw_breakpoint(tsk); - TASKS_RCU(preempt_disable()); - TASKS_RCU(tasks_rcu_i = __srcu_read_lock(&tasks_rcu_exit_srcu)); - TASKS_RCU(preempt_enable()); + exit_tasks_rcu_start(); exit_notify(tsk, group_dead); proc_exit_connector(tsk); mpol_put_task_policy(tsk); @@ -918,7 +915,7 @@ void __noreturn do_exit(long code) if (tsk->nr_dirtied) __this_cpu_add(dirty_throttle_leaks, tsk->nr_dirtied); exit_rcu(); - TASKS_RCU(__srcu_read_unlock(&tasks_rcu_exit_srcu, tasks_rcu_i)); + exit_tasks_rcu_finish(); do_task_dead(); } |