Commit c782af25 authored by Chuck Lever's avatar Chuck Lever
Browse files

SUNRPC: Add a /sys/kernel/debug/fail_sunrpc/ directory 



This directory will contain a set of administrative controls for
enabling error injection for kernel RPC consumers.

Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
parent 729580dd

lib/Kconfig.debug

+7 −0
Original line number Diff line number Diff line
@@ -1971,6 +1971,13 @@ config FAIL_MMC_REQUEST 
	  and to test how the mmc host driver handles retries from

	  the block device.



config FAIL_SUNRPC

	bool "Fault-injection capability for SunRPC"

	depends on FAULT_INJECTION_DEBUG_FS && SUNRPC_DEBUG

	help

	  Provide fault-injection capability for SunRPC and

	  its consumers.



config FAULT_INJECTION_STACKTRACE_FILTER

	bool "stacktrace filter for fault-injection capabilities"

	depends on FAULT_INJECTION_DEBUG_FS && STACKTRACE_SUPPORT

net/sunrpc/debugfs.c

+14 −0
Original line number Diff line number Diff line
@@ -8,7 +8,9 @@ 
#include <linux/debugfs.h>

#include <linux/sunrpc/sched.h>

#include <linux/sunrpc/clnt.h>



#include "netns.h"

#include "fail.h"



static struct dentry *topdir;

static struct dentry *rpc_clnt_dir;
@@ -297,6 +299,13 @@ static const struct file_operations fault_disconnect_fops = { 
	.release	= fault_release,

};



#if IS_ENABLED(CONFIG_FAIL_SUNRPC)

struct fail_sunrpc_attr fail_sunrpc = {

	.attr			= FAULT_ATTR_INITIALIZER,

};

EXPORT_SYMBOL_GPL(fail_sunrpc);

#endif



void __exit

sunrpc_debugfs_exit(void)

{
@@ -321,4 +330,9 @@ sunrpc_debugfs_init(void) 


	debugfs_create_file("disconnect", S_IFREG | 0400, rpc_fault_dir, NULL,

			    &fault_disconnect_fops);



#if IS_ENABLED(CONFIG_FAIL_SUNRPC)

	fault_create_debugfs_attr("fail_sunrpc", NULL,

				  &fail_sunrpc.attr);

#endif

}

net/sunrpc/fail.h

0 → 100644
+21 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

/*

 * Copyright (C) 2021, Oracle. All rights reserved.

 */



#ifndef _NET_SUNRPC_FAIL_H_

#define _NET_SUNRPC_FAIL_H_



#include <linux/fault-inject.h>



#if IS_ENABLED(CONFIG_FAULT_INJECTION)



struct fail_sunrpc_attr {

	struct fault_attr	attr;

};



extern struct fail_sunrpc_attr fail_sunrpc;



#endif /* CONFIG_FAULT_INJECTION */



#endif /* _NET_SUNRPC_FAIL_H_ */