diff options
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2017-09-11 11:24:23 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-09-28 07:29:40 +0200 |
| commit | 7b83c6297d2fc7350997e86188df84c27fd59530 (patch) | |
| tree | a9a849d6ab1195c06053ad215e50e9cb3dce9d8d /arch/s390/kernel | |
| parent | 5ef2d5231d547c672c67bdf84c13a4adaf477964 (diff) | |
s390/guarded storage: simplify task exit handling
Free data structures required for guarded storage from
arch_release_task_struct(). This allows to simplify the code a bit,
and also makes the semantics a bit easier: arch_release_task_struct()
is never called from the task that is being removed.
In addition this allows to get rid of exit_thread() in a later patch.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel')
| -rw-r--r-- | arch/s390/kernel/guarded_storage.c | 9 | ||||
| -rw-r--r-- | arch/s390/kernel/process.c | 3 |
2 files changed, 4 insertions, 8 deletions
diff --git a/arch/s390/kernel/guarded_storage.c b/arch/s390/kernel/guarded_storage.c index 4920cf6ffa00..65b0eca2128c 100644 --- a/arch/s390/kernel/guarded_storage.c +++ b/arch/s390/kernel/guarded_storage.c @@ -11,13 +11,10 @@ #include <asm/guarded_storage.h> #include "entry.h" -void exit_thread_gs(void) +void guarded_storage_release(struct task_struct *tsk) { - preempt_disable(); - kfree(current->thread.gs_cb); - kfree(current->thread.gs_bc_cb); - current->thread.gs_cb = current->thread.gs_bc_cb = NULL; - preempt_enable(); + kfree(tsk->thread.gs_cb); + kfree(tsk->thread.gs_bc_cb); } static int gs_enable(void) diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index a7c6c5e944c7..0ecadd349106 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -48,8 +48,6 @@ extern void kernel_thread_starter(void); */ void exit_thread(struct task_struct *tsk) { - if (tsk == current) - exit_thread_gs(); } void flush_thread(void) @@ -59,6 +57,7 @@ void flush_thread(void) void arch_release_task_struct(struct task_struct *tsk) { runtime_instr_release(tsk); + guarded_storage_release(tsk); } int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src) |