diff options
| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2022-02-17 11:24:01 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2022-02-22 22:25:01 +0100 |
| commit | 2bb0529c0bc0698f3baf3e88ffd61a18eef252a7 (patch) | |
| tree | 6d14fd0972b9bd98fc5fd450839add3743bb49fb /kernel/fork.c | |
| parent | 546c42b2c5c161619736dd730d3df709181999d0 (diff) | |
| download | linux-2bb0529c0bc0698f3baf3e88ffd61a18eef252a7.tar.gz | |
fork, IA64: Provide alloc_thread_stack_node() for IA64
Provide a generic alloc_thread_stack_node() for IA64 and
CONFIG_ARCH_THREAD_STACK_ALLOCATOR which returns stack pointer and sets
task_struct::stack so it behaves exactly like the other implementations.
Rename IA64's alloc_thread_stack_node() and add the generic version to the
fork code so it is in one place _and_ to drastically lower the chances of
fat fingering the IA64 code. Do the same for free_thread_stack().
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Andy Lutomirski <luto@kernel.org>
Link: https://lore.kernel.org/r/20220217102406.3697941-4-bigeasy@linutronix.de
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 30c01ce2ae57d..7b70c47410720 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -330,6 +330,23 @@ void thread_stack_cache_init(void) } # endif /* THREAD_SIZE >= PAGE_SIZE || defined(CONFIG_VMAP_STACK) */ +#else /* CONFIG_ARCH_THREAD_STACK_ALLOCATOR */ + +static unsigned long *alloc_thread_stack_node(struct task_struct *tsk, int node) +{ + unsigned long *stack; + + stack = arch_alloc_thread_stack_node(tsk, node); + tsk->stack = stack; + return stack; +} + +static void free_thread_stack(struct task_struct *tsk) +{ + arch_free_thread_stack(tsk); + tsk->stack = NULL; +} + #endif /* !CONFIG_ARCH_THREAD_STACK_ALLOCATOR */ /* SLAB cache for signal_struct structures (tsk->signal) */ |