From f72709ab69430d986dfc5a08c9a86f625e3fed33 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Thu, 16 Nov 2023 14:36:36 +0100 Subject: arch: remove ARCH_THREAD_STACK_ALLOCATOR Patch series "Remove unused code after IA-64 removal". While looking into something different I noticed that there are a couple of Kconfig options which were only selected by IA-64 and which are now unused. So remove them and simplify the code a bit. This patch (of 3): IA-64 was the only architecture which selected ARCH_THREAD_STACK_ALLOCATOR. IA-64 was removed with commit cf8e8658100d ("arch: Remove Itanium (IA-64) architecture"). Therefore remove support for ARCH_THREAD_STACK_ALLOCATOR as well. Link: https://lkml.kernel.org/r/20231116133638.1636277-1-hca@linux.ibm.com Link: https://lkml.kernel.org/r/20231116133638.1636277-2-hca@linux.ibm.com Signed-off-by: Heiko Carstens Reviewed-by: Arnd Bergmann Cc: Michael Ellerman Cc: Nicholas Piggin Signed-off-by: Andrew Morton --- kernel/fork.c | 20 -------------------- 1 file changed, 20 deletions(-) (limited to 'kernel/fork.c') diff --git a/kernel/fork.c b/kernel/fork.c index 10917c3e1f03..d071809866e0 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -179,8 +179,6 @@ static inline void free_task_struct(struct task_struct *tsk) } #endif -#ifndef CONFIG_ARCH_THREAD_STACK_ALLOCATOR - /* * Allocate pages if THREAD_SIZE is >= PAGE_SIZE, otherwise use a * kmemcache based allocator. @@ -412,24 +410,6 @@ void thread_stack_cache_init(void) } # endif /* THREAD_SIZE >= PAGE_SIZE || defined(CONFIG_VMAP_STACK) */ -#else /* CONFIG_ARCH_THREAD_STACK_ALLOCATOR */ - -static int 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 ? 0 : -ENOMEM; -} - -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) */ static struct kmem_cache *signal_cachep; -- cgit