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fork: fix some -Wmissing-prototypes warnings
[ Upstream commitfb5bf31722
] We get a warning when building kernel with W=1: kernel/fork.c:167:13: warning: no previous prototype for `arch_release_thread_stack' [-Wmissing-prototypes] kernel/fork.c:779:13: warning: no previous prototype for `fork_init' [-Wmissing-prototypes] Add the missing declaration in head file to fix this. Also, remove arch_release_thread_stack() completely because no arch seems to implement it sincebb9d81264
(arch: remove tile port). Link: http://lkml.kernel.org/r/1542170087-23645-1-git-send-email-wang.yi59@zte.com.cn Signed-off-by: Yi Wang <wang.yi59@zte.com.cn> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -39,6 +39,8 @@ void __noreturn do_task_dead(void);
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extern void proc_caches_init(void);
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extern void proc_caches_init(void);
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extern void fork_init(void);
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extern void release_task(struct task_struct * p);
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extern void release_task(struct task_struct * p);
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#ifdef CONFIG_HAVE_COPY_THREAD_TLS
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#ifdef CONFIG_HAVE_COPY_THREAD_TLS
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@ -105,7 +105,6 @@
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static int kernel_init(void *);
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static int kernel_init(void *);
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extern void init_IRQ(void);
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extern void init_IRQ(void);
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extern void fork_init(void);
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extern void radix_tree_init(void);
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extern void radix_tree_init(void);
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/*
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/*
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@ -163,10 +163,6 @@ static inline void free_task_struct(struct task_struct *tsk)
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}
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}
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#endif
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#endif
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void __weak arch_release_thread_stack(unsigned long *stack)
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{
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}
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#ifndef CONFIG_ARCH_THREAD_STACK_ALLOCATOR
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#ifndef CONFIG_ARCH_THREAD_STACK_ALLOCATOR
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/*
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/*
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@ -376,7 +372,6 @@ static void release_task_stack(struct task_struct *tsk)
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return; /* Better to leak the stack than to free prematurely */
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return; /* Better to leak the stack than to free prematurely */
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account_kernel_stack(tsk, -1);
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account_kernel_stack(tsk, -1);
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arch_release_thread_stack(tsk->stack);
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free_thread_stack(tsk);
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free_thread_stack(tsk);
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tsk->stack = NULL;
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tsk->stack = NULL;
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#ifdef CONFIG_VMAP_STACK
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#ifdef CONFIG_VMAP_STACK
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