From 2bb0529c0bc0698f3baf3e88ffd61a18eef252a7 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Thu, 17 Feb 2022 11:24:01 +0100 Subject: 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 Signed-off-by: Thomas Gleixner Acked-by: Andy Lutomirski Link: https://lore.kernel.org/r/20220217102406.3697941-4-bigeasy@linutronix.de --- kernel/fork.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'kernel') diff --git a/kernel/fork.c b/kernel/fork.c index 30c01ce2ae57..7b70c4741072 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) */ -- cgit v1.2.3