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s390/rethook: add local rethook header file

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Compiling the kernel with CONFIG_KPROBES disabled, but CONFIG_RETHOOK
enabled, results in this sparse warning:

arch/s390/kernel/rethook.c:26:15: warning: no previous prototype for 'arch_rethook_trampoline_callback' [-Wmissing-prototypes]
    26 | unsigned long arch_rethook_trampoline_callback(struct pt_regs *regs)
       |               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Add a local rethook header file similar to riscv to address this.

Reported-by: kernel test robot <lkp@intel.com>
Fixes: 1a280f48c0 ("s390/kprobes: replace kretprobe with rethook")
Link: https://lore.kernel.org/all/202302030102.69dZIuJk-lkp@intel.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2023-02-02 21:36:07 +01:00
parent fb9293b9f3
commit 1e2eb49bb1
3 changed files with 8 additions and 1 deletions
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1
arch/s390/include/asm/kprobes.h
View File

@ -70,7 +70,6 @@ struct kprobe_ctlblk {
};
void arch_remove_kprobe(struct kprobe *p);
unsigned long arch_rethook_trampoline_callback(struct pt_regs *regs);
int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
int kprobe_exceptions_notify(struct notifier_block *self,

1
arch/s390/kernel/rethook.c
View File

@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0-or-later
#include <linux/rethook.h>
#include <linux/kprobes.h>
#include "rethook.h"
void arch_rethook_prepare(struct rethook_node *rh, struct pt_regs *regs, bool mcount)
{

7
arch/s390/kernel/rethook.h Normal file
View File

@ -0,0 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __S390_RETHOOK_H
#define __S390_RETHOOK_H
unsigned long arch_rethook_trampoline_callback(struct pt_regs *regs);
#endif