diff options
author | Eric W. Biederman <ebiederm@xmission.com> | 2021-06-28 21:52:01 +0200 |
---|---|---|
committer | Eric W. Biederman <ebiederm@xmission.com> | 2021-12-13 19:04:45 +0100 |
commit | 0e25498f8cd43c1b5aa327f373dd094e9a006da7 (patch) | |
tree | f9f4cf6d7c1deccaa34ad6f7af345bff52b63c12 /kernel/exit.c | |
parent | exit/s390: Remove dead reference to do_exit from copy_thread (diff) | |
download | linux-0e25498f8cd43c1b5aa327f373dd094e9a006da7.tar.xz linux-0e25498f8cd43c1b5aa327f373dd094e9a006da7.zip |
exit: Add and use make_task_dead.
There are two big uses of do_exit. The first is it's design use to be
the guts of the exit(2) system call. The second use is to terminate
a task after something catastrophic has happened like a NULL pointer
in kernel code.
Add a function make_task_dead that is initialy exactly the same as
do_exit to cover the cases where do_exit is called to handle
catastrophic failure. In time this can probably be reduced to just a
light wrapper around do_task_dead. For now keep it exactly the same so
that there will be no behavioral differences introducing this new
concept.
Replace all of the uses of do_exit that use it for catastraphic
task cleanup with make_task_dead to make it clear what the code
is doing.
As part of this rename rewind_stack_do_exit
rewind_stack_and_make_dead.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'kernel/exit.c')
-rw-r--r-- | kernel/exit.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/kernel/exit.c b/kernel/exit.c index f702a6a63686..bfa513c5b227 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -884,6 +884,15 @@ void __noreturn do_exit(long code) } EXPORT_SYMBOL_GPL(do_exit); +void __noreturn make_task_dead(int signr) +{ + /* + * Take the task off the cpu after something catastrophic has + * happened. + */ + do_exit(signr); +} + void complete_and_exit(struct completion *comp, long code) { if (comp) |