diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2019-11-07 00:55:39 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-11-20 11:40:08 +0300 |
| commit | 150d71584b12809144b8145b817e83b81158ae5f (patch) | |
| tree | e34f2d777472f9dbe37c253431f33c81e654b3af /kernel | |
| parent | 4610ba7ad877fafc0a25a30c6c82015304120426 (diff) | |
| download | linux-150d71584b12809144b8145b817e83b81158ae5f.tar.xz | |
futex: Split futex_mm_release() for exit/exec
To allow separate handling of the futex exit state in the futex exit code
for exit and exec, split futex_mm_release() into two functions and invoke
them from the corresponding exit/exec_mm_release() callsites.
Preparatory only, no functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20191106224556.332094221@linutronix.de
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/fork.c | 5 | ||||
| -rw-r--r-- | kernel/futex.c | 7 |
2 files changed, 8 insertions, 4 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 096f9d840bb8..f1eb4d1f1a3b 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -1285,9 +1285,6 @@ static int wait_for_vfork_done(struct task_struct *child, */ static void mm_release(struct task_struct *tsk, struct mm_struct *mm) { - /* Get rid of any futexes when releasing the mm */ - futex_mm_release(tsk); - uprobe_free_utask(tsk); /* Get rid of any cached register state */ @@ -1322,11 +1319,13 @@ static void mm_release(struct task_struct *tsk, struct mm_struct *mm) void exit_mm_release(struct task_struct *tsk, struct mm_struct *mm) { + futex_exit_release(tsk); mm_release(tsk, mm); } void exec_mm_release(struct task_struct *tsk, struct mm_struct *mm) { + futex_exec_release(tsk); mm_release(tsk, mm); } diff --git a/kernel/futex.c b/kernel/futex.c index 41c75277d7d1..909e4d3c3099 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -3661,7 +3661,7 @@ static void exit_robust_list(struct task_struct *curr) } } -void futex_mm_release(struct task_struct *tsk) +void futex_exec_release(struct task_struct *tsk) { if (unlikely(tsk->robust_list)) { exit_robust_list(tsk); @@ -3679,6 +3679,11 @@ void futex_mm_release(struct task_struct *tsk) exit_pi_state_list(tsk); } +void futex_exit_release(struct task_struct *tsk) +{ + futex_exec_release(tsk); +} + long do_futex(u32 __user *uaddr, int op, u32 val, ktime_t *timeout, u32 __user *uaddr2, u32 val2, u32 val3) { |